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The hetero ring is a cyclic carbonate (e.g., ethylene carbonate, propylene carbonate, etc.)

Subclass of:

429 - Chemistry: electrical current producing apparatus, product, and process

429122000 - CURRENT PRODUCING CELL, ELEMENTS, SUBCOMBINATIONS AND COMPOSITIONS FOR USE THEREWITH AND ADJUNCTS

429188000 - Include electrolyte chemically specified and method

429324000 - Chemically specified organic solvent containing

429336000 - Hetero ring in the organic solvent

429337000 - Oxygen is the only ring hetero atom in the hetero ring (e.g., dioxolane, gamma butyrolactone, etc.)

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DocumentTitleDate
20090253048NONAQUEOUS ELECTROLYTE SOLUTION, NONAQUEOUS ELECTROLYTE SECONDARY CELL, AND CARBONATE COMPOUNDS - The present invention provides a nonaqueous electrolytic solution which can give excellent cycle characteristics. The nonaqueous electrolytic solution contains a linear carbonate represented by the formula (1):10-08-2009
20110189549REDOX FLOW BATTERY - A redox flow battery has a high energy density and an excellent charge and discharge efficiency because re-precipitation is prevented in an electrolyte solution or eduction is prevented in an electrode during reduction of a metal ion used as an electrolyte.08-04-2011
20100075233BATTERY AND ELECTRODE - A positive electrode includes: a salt represented by the following formula (1) on the surface of an active material contained in a positive electrode active material layer provided on a positive electrode collector, or at least on the surface of the positive electrode active material layer03-25-2010
20100081063NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery has a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte dissolving a solute in a non-aqueous solvent wherein the negative electrode contains a negative electrode active material containing powdered silicon and/or silicon alloy and a binding agent, and the non-aqueous electrolyte contains a fluorinated cyclic carbonate represented by a general formula (1) below, and wherein when Li storage volume per unit area in the negative electrode during charging is determined as A and the theoretical maximum Li storage volume per unit area in the negative electrode is determined as B, a utilizing rate (%) of negative electrode as expressed by (A/B)×100 is 45% or less.04-01-2010
20110195319LITHIUM SECONDARY BATTERY - The object of the present invention is to provide a lithium secondary battery which can suppress a deterioration for a period of high temperature storage at 50° C. or more.08-11-2011
20100119955ESTER COMPOUND, AND NON-AQUEOUS ELECTROLYTE SOLUTION AND LITHIUM SECONDARY BATTERY EACH USING THE ESTER COMPOUND - The present invention includes (1) an ester compound having a specific structure, (2) a nonaqueous electrolytic solution for lithium secondary battery comprising an electrolyte dissolved in a nonaqueous solvent and containing an ester compound having a specific structure in an amount of from 0.01 to 10% by weight of the nonaqueous electrolytic solution, which is excellent in initial battery capacity and cycle property, and (3) a lithium secondary battery comprising a positive electrode, a negative electrode and a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, wherein the nonaqueous electrolytic solution contains an ester compound having a specific structure in an amount of from 0.01 to 10% by weight of the nonaqueous electrolytic solution.05-13-2010
20130078530NONAQUEOUS ELECTROLYTE BATTERY AND BATTERY PACK - According to one embodiment, a nonaqueous electrolyte battery includes a nonaqueous electrolyte, a positive electrode, a negative electrode and a separator. The nonaqueous electrolyte includes an asymmetric sulfone-based compound and a symmetric sulfone-based compound. The positive electrode includes a composite oxide represented by Li03-28-2013
20130078531NON-AQUEOUS ELECTROLYTE BATTERY - A non-aqueous electrolyte battery includes an electrode group includes a positive electrode and a negative electrode disposed through a separator, and a non-aqueous electrolyte. The negative electrode comprises a current collector and a porous negative electrode layer formed on the current collector and containing a lithium compound. The porous negative electrode layer has a first peak at a pore diameter of 0.04 to 0.15 μm and a second peak at a pore diameter of 0.8 to 6 μm in the relation between the pore diameter and log differential intrusion obtained in the mercury press-in method.03-28-2013
20100015532NEGATIVE ELECTRODE AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A rolled foil of surface roughened copper as thick as 26 μm for example having a surface formed into an irregular shape with copper precipitated thereon by an electrolytic method is prepared as a negative electrode collector. Tin (Sn) or germanium (Ge) is deposited on the rolled foil described above, so that a negative electrode active material layer is formed. Note that the deposited tin or germanium is amorphous. The arithmetic mean roughness Ra in the surface-roughened rolled foil described above is preferably not less than 0.1 μm nor more than 10 μm. A non-aqueous electrolyte is produced by adding sodium hexafluorophosphate as an electrolyte salt in a concentration of 1 mol/l to a non-aqueous solvent produced by mixing ethylene carbonate and diethyl carbonate in the ratio of 50:50 by volume.01-21-2010
20090053613Positive Electrode and Non-Aqueous Electrolyte Secondary Battery - A material (hereinafter referred to as “positive electrode material”) including sodium manganate powder as a positive electrode active material, carbon black powder as a conductive agent, and polytetrafluoroethylene as a binder is prepared. The positive electrode material is mixed in an N-methylpyrrolidone solution to produce slurry as a positive electrode mixture. A working electrode is produced by applying the slurry on a positive electrode collector. A negative electrode containing tin or germanium is produced. The non-aqueous electrolyte is produced by adding sodium hexafluorophosphate as an electrolyte salt in a non-aqueous solvent produced by mixing ethylenecarbonate and diethyl carbonate.02-26-2009
20130029232LITHIUM ION SECONDARY BATTERY INCLUDING IONIC LIQUID ELECTROLYTE - A lithium ion secondary battery includes a positive electrode, a negative electrode, a separator and an ionic liquid electrolyte. The separator is a polar porous membrane. The ionic liquid electrolyte and the separator made of the polar porous are used in the lithium ion secondary batteries, which can improve the electrochemical performance of the lithium ion secondary batteries.01-31-2013
20130071760Method for Producing Electrolyte Solution for Lithium Ion Battery, and Lithium Ion Battery Using the Electrolyte Solution - Disclosed is a method for producing a lithium ion battery electrolyte solution containing lithium hexafluorophosphate as an electrolyte and a lithium ion battery using the electrolyte solution. The electrolyte solution is produced by reacting lithium chloride with phosphorus trichloride and chlorine in a non-aqueous organic solvent, reacting a reaction product generated in the solvent with hydrogen fluoride, reacting unreacted remaining hydrogen fluoride with lithium chloride, and then, separating the resulting reaction solution by filtration into a filtrate and a solid residue. The filtrate is obtained as the lithium ion battery electrolyte solution. The solid product is further reacted with phosphorous trichloride and chlorine in a non-aqueous organic solvent. The reaction product generated in the solvent is reacted with hydrogen fluoride, followed by reacting unreacted remaining hydrogen fluoride with lithium chloride. It is possible to accomplish reduction in production cost with the reuse of the reaction residue as production raw material.03-21-2013
20130059210ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - An electrolyte for a rechargeable lithium battery and rechargeable lithium battery including the same is provided. The electrolyte includes a film-forming compound; a lithium salt; and an organic solvent.03-07-2013
20090269677ANODE AND SECONDARY BATTERY - A secondary battery capable of improving the cycle characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution is impregnated in a separator provided between the cathode and the anode. The anode has an anode structure on an anode current collector. The anode structure has a structure in which a plurality of anode active material particles having silicon are held by a plurality of metal fibers forming a three-dimensional network structure. Due to the plurality of metal fibers, sufficient conductive paths are obtained among the plurality of anode active material particles. Thus, compared to a general anode in which an active material layer is provided on a current collector made of a metal foil or the like, the current collectivity is improved.10-29-2009
20130065138METHOD FOR NEGATIVE ELECTRODE ACTIVE MATERIAL EVALUATION AND NEGATIVE ELECTRODE ACTIVE MATERIAL - Provided is a method for negative electrode active material evaluation useful for steady production of batteries having a prescribed performance level. This evaluation method comprises: (A) running microscopic Raman analysis at a wavelength of 532 nm n times on a sample of a composite carbon comprising a low-crystalline carbon material at least partially on surfaces of particles of a high-crystalline carbonaceous substance (wherein n is 20 or more); (B) with respect to a Raman spectrum obtained in each microscopic Raman analysis run, determining the ratio of its D-band intensity I03-14-2013
20110045359Reactive ionic liquids - The invention relates to reactive ionic liquids containing organic cations with groups or substituents which are susceptible to electrochemical reduction and anions obtained from fluoroalkyl phosphates, fluoroalkyl phosphinates, fluoroalkyl phosphonates, acetates, triflates, imides, methides, borates, phosphates and/or aluminates, for use in electrochemical cells, such as lithium ion batteries and double-layer capacitors.02-24-2011
20130164636HYBRID ENERGY STORAGE DEVICE - A hybrid energy storage device includes a positive electrode comprising open-structured carbonaceous materials and at least one lithium-containing inorganic compound characterized by Li06-27-2013
20130164637NON-AQUEOUS ELECTROLYTE SOLUTION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A non-aqueous electrolyte solution includes an electrolyte solution including an amide compound and a lithium salt, and a dinitrile compound substituted by a hetero atom at a main chain, and a lithium secondary battery includes the non-aqueous electrolyte solution. By using the non-aqueous electrolyte solution, a lithium secondary battery having an improved swelling phenomenon and an increased charging/discharging performance may be provided.06-27-2013
20120237837ADDITIVES FOR IMPROVING THE HIGH TEMPERATURE PERFORMANCE IN NON-AQUEOUS RECHARGEABLE LITHIUM-ION BATTERIES - The present invention generally relates to electrochemical batteries, and more specifically, to the combined additives in the non-aqueous electrolyte for rechargeable lithium-ion batteries containing spinel-based cathode that may enhance the performance of the batteries. The mixed additives comprising of 1,8-bis(dialkylamino)naphthalene, wherein alky group is described by C09-20-2012
20110117448NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An object of the invention is to provide an inexpensive non-aqueous electrolyte secondary battery that allows reversible charge and discharge to be carried out. The non-aqueous electrolyte secondary battery according to the invention includes a positive electrode, a negative electrode containing carbon capable of storing and releasing potassium, and a non-aqueous electrolyte including potassium ions.05-19-2011
20110281180NEGATIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING SAME - Embodiments of the present invention are directed to negative active materials for lithium rechargeable batteries and to lithium rechargeable batteries including the negative active materials. The negative active material includes a crystalline carbon material having pores, and amorphous conductive nanoparticles in the pores, on the surface of the crystalline carbon, or both in the pores and on the surface of the crystalline carbon. The conductive nanoparticles have a FWHM of about 0.35 degrees (°) or greater at the crystal plane that produces the highest peak as measured by X-ray diffraction.11-17-2011
20090176163BATTERY - A battery is provided. The battery includes an electrolytic solution, a positive electrode and a negative electrode. The negative electrode has a negative electrode active material layer containing a carbon material and having a thickness per one face of 70 μm or more and not more than 120 μm. The electrolytic solution contains a solvent containing 15% by mass or more and not more than 30% by mass of a cyclic carbonate represented by the following formula (1):07-09-2009
20110287326LONG LIFE LITHIUM BATTERIES WITH STABILIZED ELECTRODES - The present invention relates to non-aqueous electrolytes having stabilization additives and electrochemical devices containing the same. Thus the present invention provides electrolytes containing an alkali metal salt, a polar aprotic solvent, a first additive that is a substituted or unsubstituted organoamine, substituted or unsubstituted alkane, substituted or unsubstituted alkene, or substituted or unsubstituted aryl compound, and/or a second additive that is a metal (chelato)borate. When used in electrochemical devices with, e.g., lithium manganese oxide spinel electrodes, the new electrolytes provide batteries with improved calendar and cycle life.11-24-2011
20110294019ELECTRODE STABILIZING MATERIALS - An electrolyte includes a polar aprotic solvent; an alkali metal salt; and an electrode stabilizing compound that is a monomer, which when polymerized forms an electrically conductive polymer. The electrode stabilizing compound is a thiophene, a imidazole, a anilines, a benzene, a azulene, a carbazole, or a thiol. Electrochemical devices may incorporate such electrolytes.12-01-2011
20110294017REDOX SHUTTLES FOR LITHIUM ION BATTERIES - Compounds may have general Formula IVA or IVB.12-01-2011
20110294018REDOX SHUTTLES FOR HIGH VOLTAGE CATHODES - A compound has general Formula I, II, III, or IV:12-01-2011
20110143220THIAZOLE COMPOUNDS AS ADDITIVES IN ELECTROLYTE SOLUTIONS IN ELECTROCHEMICAL CELLS AND BATTERIES - The present invention relates to an electrolyte solution comprising at least one solvent as component A, at least one electrolyte as component B and from 0.1 to 20% by weight, based on the total electrolyte solution, of at least one heteroaromatic compound of the general formula (I) as component C, the use of such a compound in electrolyte solutions, the use of such an electrolyte solution in an electrochemical cell or for metal plating, and also electrochemical cells comprising a corresponding electrolyte solution.06-16-2011
20080305402Method for Producing Difluorophosphate, Non-Aqueous Electrolyte for Secondary Cell and Non-Aqueous Electrolyte Secondary Cell - A difluorophosphate effective as an additive for a nonaqueous electrolyte for secondary battery is produced by a simple method from inexpensive common materials.12-11-2008
20120028132Electrolyte for Electrochemical Device, Electrolyte Solution Using Same, and Non-Aqueous Electrolyte Battery - [Summary] An object of the present invention is to find a new electrolyte having a characteristics for the electrolyte for an electrochemical device and to provide excellent electrolytic solution for a nonaqueous electrolyte battery and nonaqueous electrolyte battery which use this.02-02-2012
20110269027BATTERY CATHODES - Batteries are disclosed. In some embodiments, a battery includes a cathode having a composition that includes a manganese oxide. The composition has an X-ray diffraction pattern with a first peak at about 18 degrees, a second peak at about 22 degrees, and a third peak at about 32 degrees.11-03-2011
20100119956NONAQUEOUS ELECTROLYTE FOR SECONDARY BATTERY AND NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY EMPLOYING THE SAME - An object is to provide a nonaqueous electrolyte and a nonaqueous-electrolyte secondary battery which have excellent discharge load characteristics and are excellent in high-temperature storability, cycle characteristics, high capacity, continuous-charge characteristics, storability, gas evolution inhibition during continuous charge, high-current-density charge/discharge characteristics, discharge load characteristics, etc. The object has been accomplished with a nonaqueous electrolyte which comprises: a monofluorophosphate and/or a difluorophosphate; and further a compound having a specific chemical structure or specific properties.05-13-2010
20100081062NON-AQUEOUS ELECTROLYTE FOR SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a non-aqueous electrolyte secondary battery wherein a reaction between a non-aqueous electrolyte and an electrode is suppressed and decrease in battery capacity under high temperature is restricted, so that long time excellent battery characteristics can be obtained. A non-aqueous solvent of the non-aqueous electrolyte contains: chain fluorinated carboxylic acid ester represented by the formula R1-CH04-01-2010
20100081064NON-AQUEOUS ELECTROLYTE BATTERY - A non-aqueous electrolyte battery includes: a positive electrode containing a lithium phosphate compound having an olivine structure; a negative electrode containing a negative electrode active material capable of doping and dedoping lithium; and a non-aqueous electrolyte, the non-aqueous electrolyte containing a cyclic carbonate derivative represented by the following formula (1) and 1,2-dimethoxyethane04-01-2010
20120107700NON-AQUEOUS ELECTROLYTE AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - In view of suppressing gas production during storage at high temperatures and during charge and discharge cycles while ensuring favorable low-temperature characteristics, the invention aims to provide a non-aqueous electrolyte in which the proportion of diethyl carbonate is reduced, and a non-aqueous electrolyte secondary battery using the same that has high safety. The non-aqueous electrolyte of the invention for use in secondary batteries includes ethylene carbonate, propylene carbonate, diethyl carbonate, and an additive, as a non-aqueous solvent. The additive is at least one of a fluorinated aromatic compound having a molecular weight of 90 to 200 and a fatty acid alkyl ester having a molecular weight of 80 to 240. A weight ratio W05-03-2012
20120107699LITHIUM ION BATTERY - A high-voltage lithium ion battery of the present invention has a cathode generating a potential of 4.5 V or higher on the metal lithium basis, an anode, and a nonaqueous electrolyte having a lithium salt dissolved in a nonaqueous solvent. A cathode coating layer is on at least a part of the surface of a cathode material mix and includes boron whose amount is equal to or greater than 0.0001% and equal to or less than 0.005% by weight of the cathode material mix.05-03-2012
20130216920NONAQUEOUS ELECTROLYTE BATTERY - A non-aqueous electrolyte battery capable of flattening of a voltage property and securing safety at a time of battery abnormality is provided. A lithium-ion secondary battery 08-22-2013
20110200887NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery includes a positive electrode (08-18-2011
20090291370ELECTROLYTE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY COMPRISING THE SAME - An electrolyte for a lithium ion secondary battery includes a non-aqueous organic solvent; a lithium salt; and a phosphonitrile fluoride trimer as an additive, and a lithium ion secondary battery comprising the same. The thickness increase rate of a lithium ion secondary battery including the electrolyte is reduced even when the battery is kept at a high temperature. Thus, the thermal stability and durability of the battery are prominently improved. The durability of the battery can be further improved by including a vinylene carbonate or ethylene carbonate group compound in the electrolyte.11-26-2009
20090291371ANODE AND SECONDARY BATTERY INCLUDING THE SAME - A secondary battery having high cycle characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolyte. In the anode, an anode active material layer containing silicon, carbon, and oxygen as an anode active material is provided on an anode current collector. In the anode active material, a content of carbon is from 0.2 atomic % to 10 atomic % both inclusive, and a content of oxygen is from 0.5 atomic % to 40 atomic % both inclusive. A ratio from 0.1% to 17.29% both inclusive of the silicon contained in the anode active material exists as Si—C bond.11-26-2009
20110200888NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An object is to provide a high capacity non-aqueous electrolyte secondary battery in which decomposition of propylene carbonate is suppressed. The non-aqueous electrolyte secondary battery includes: a negative electrode including graphite particles as a negative electrode active material; a positive electrode; a separator; and a non-aqueous electrolyte including propylene carbonate as a non-aqueous solvent. Each of the graphite particles has a surface portion including an amorphous region and a crystal region which includes a plurality of carbon hexagonal net planes stacked along a surface of the graphite particle. Ends of the stacked carbon hexagonal net planes form loops exposed on the surface of the graphite particle. At least a part of the loops are stacked, and the average number of the loops stacked is more than 1 and not more than 2.08-18-2011
20110206999NON-AQUEOUS ELECTROLYTE SOLUTION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Disclosed are a non-aqueous electrolyte solution for a lithium secondary battery and a lithium secondary battery comprising the same. The non-aqueous electrolyte solution for a lithium secondary battery comprises a silicon-based compound represented by a specific chemical formula and having both a hydroxyl group and a hydrocarbon group having a carbon-carbon double bond. When it is applied to a lithium secondary battery, the non-aqueous electrolyte solution improves deterioration of cycle life characteristics occurring after repeated charge/discharge cycles and prevents swelling phenomena by suppressing a decomposition reaction of an electrolyte solution even when a battery in a fully charged state is stored at high temperature or is charged/discharged, thereby enhancing the life characteristics at high temperature.08-25-2011
20080286657NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery is composed of a positive electrode containing a positive electrode active material capable of storing and releasing lithium ion, a negative electrode containing a negative electrode active material capable of storing and releasing lithium ion, and a non-aqueous electrolyte. The negative electrode active material contains a first material of a graphite material and a second material of a complex in which graphite material and silicon or silicon composite are coated with amorphous carbon material, and a cyclic carbonic acid ester derivative having fluoride atom and a sulfur-containing composite having cyclic structure are added to the non-aqueous electrolyte.11-20-2008
20080305403Non-Aqueous Electrolyte and Secondary Battery Comprising the Same - Disclosed is a non-aqueous electrolyte comprising: a non-aqueous cyclic solvent; a catalyst for polymerization, which is activated depending on temperature or voltage to induce the polymerization of the non-aqueous cyclic solvent; and an electrolyte salt. Also, a secondary battery comprising the non-aqueous electrolyte is disclosed. The non-aqueous electrolyte does not influence the performance of the battery at the normal operating temperature and voltage of the secondary battery. However, when the battery misoperates due to high temperature or overcharge, the polymerization of the non-aqueous cyclic solvent can occur due to the catalyst for polymerization contained in the non-aqueous electrolyte, at a specific temperature or voltage, to increase the resistance of the electrolyte and reduce the ion conductivity of the electrolyte, thus increasing the safety of the battery.12-11-2008
20120196193COMPOSITE GRAPHITE PARTICLES AND LITHIUM SECONDARY BATTERY USING THE SAME - The present invention provides composite graphite particles, which are useful for a negative electrode in a secondary battery having high capacitance, good charge-discharge characteristics and good charge-discharge cycle characteristics; and a paste for negative electrode, a negative electrode and a lithium secondary battery which use the composite graphite particles.08-02-2012
20120141885NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY - A subject for the invention is to improve the cycle characteristics of a high-capacity secondary battery containing an active material packed at a high density, by using a particulate active material having a low aspect ratio.06-07-2012
20120141887NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY - A subject for the invention is to improve the cycle characteristics of a high-capacity secondary battery containing an active material packed at a high density, by using a particulate active material having a low aspect ratio.06-07-2012
20100297510LITHIUM SECONDARY BATTERY WITH IMPROVED CELL CHARACTERISTICS - Disclosed herein is a lithium secondary cell including 20 to 100 wt. % of lithium transition metal oxide represented by a formula of Li11-25-2010
20090325077Nonaqueous electrolyte secondary battery - In a nonaqueous electrolyte secondary battery having a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, and a nonaqueous electrolyte, as the positive electrode active material or as the negative electrode active material, a mixture containing molybdenum dioxide and lithium titanate in a weight ratio (molybdenum dioxide:lithium titanate) of 90:10 to 50:50 is used.12-31-2009
20120244446REDOX SHUTTLE FOR HIGH VOLTAGE LITHIUM BATTERY - A redox shuttle is provided to prevent overcharge of high voltage batteries, such as high voltage lithium ion (Li-ion) batteries. An exemplary redox shuttle includes a methylated closo-monocarborate anion.09-27-2012
20110143219Fluoride Ion Battery Electrolyte Compositions - A fluoride ion battery includes a substantially lithium-free anode and cathode. At least one of the anode or cathode contains fluorine, and a substantially lithium-free liquid electrolyte is used for charge transport. The electrolyte is liquid at temperatures below about 200 degrees Celsius, and can be formed from an organic-soluble fluoride salt dissolved in selected classes of solvents.06-16-2011
20110229774LITHIUM ION BATTERY - The present invention provides a lithium ion battery which is protected from deterioration in performance due to oxidation decomposition of the nonaqueous electrolyte solution and excels in cycle life. The lithium ion battery has a cathode including a cathode active material exhibiting a potential of 4.5 V or more with reference to lithium metal; an anode; and a nonaqueous electrolyte solution containing a nonaqueous solvent and at least one lithium salt dissolved in the nonaqueous solvent. The nonaqueous solvent mainly contains a cyclic carbonate and a chain carbonate. The nonaqueous electrolyte solution contains boron ethoxide.09-22-2011
20110229773Non-Aqueous Electrolyte And Electrochemical Device Comprising The Same - Disclosed is a non-aqueous electrolyte comprising: an acrylate compound; a sulfinyl group-containing compound; an organic solvent; and an electrolyte salt. Also, disclosed is an electrode comprising a coating layer formed partially or totally on a surface thereof, the coating layer comprising: (i) a reduced form of an acrylate compound; and (ii) a reduced form of a sulfinyl group-containing compound. Further, disclosed is an electrochemical device comprising a cathode, an anode and a non-aqueous electrolyte, wherein (i) the non-aqueous electrolyte is the aforementioned non-aqueous electrolyte; and/or (ii) the cathode and/or the anode is the aforementioned electrode.09-22-2011
20100183927Electrolyte for electrochemical device and the electrochemical device thereof - The present invention provides an electrolyte containing novel additive for electrochemical device and the electrochemical device thereof. The additive is a compound represented by below formula (I):07-22-2010
20100261069NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - An object of the invention is to provide a nonaqueous electrolyte secondary battery exhibiting high output characteristics in low-temperature environments, the nonaqueous electrolyte secondary battery being a lithium ion battery which uses a lithium manganese composite oxide as a positive electrode active material and a lithium titanium composite oxide as a negative electrode active material. The nonaqueous electrolyte secondary battery wherein the positive electrode active material contains a lithium-manganese composite oxide containing lithium and manganese as constituent elements, the negative electrode active material contains a lithium-titanium composite oxide containing lithium and titanium as constituent elements, and the separator contains inorganic particles is used.10-14-2010
20100178570Nonaqueous electrolytic cell and its manufacturing method - The invention aims to suppress gas generation in a nonaqueous electrolytic cell having a negative electrode containing negative active material such as lithium titanate and particularly suppress swelling in a nonaqueous electrolytic cell by suppressing gas generation at the time of storage at a high temperature. The nonaqueous electrolytic cell comprises a nonaqueous electrolyte containing an electrolytic salt and a nonaqueous solvent, a positive electrode, and a negative electrode containing a negative electrode material into/from which lithium ions are inserted/extracted at a potential higher than the lithium potential by 1.2 V. The nonaqueous electrolytic cell is characterized in that the nonaqueous electrolyte contains vinylene carbonate, the negative electrode has a coat thereon, and the nonaqueous electrolytic cell is used in a range of negative electrode potential nobler than the lithium potential by 0.8 V. A nonaqueous electrolytic cell manufacturing method is characterized in that a nonaqueous electrolyte containing vinylene carbonate is used, the initial charge-discharge is carried out under a condition that the negative potential in the completed charged state exceeds the lithium potential by 0.8 V, a coat is formed on the surface of the negative electrode or a coat is formed on the surface of the negative electrode at the initial charge-discharge in such a way at least once, the negative potential is lowered below the lithium potential by 0.4 V.07-15-2010
20100178571ELECTRODE MATERIAL, AND PRODUCTION METHOD AND USE THEREOF - An electrode material comprising a particle containing at least one member selected from the particles containing silicon, tin, silicon compound and tin compound, and fibrous carbon. The particle includes: (1) a particle comprising at least one member of a silicon particle, tin particle, particle containing a lithium-ion-intercalatable/releasable silicon compound and particle containing a lithium-ion-intercalatable/releasable tin compound; or (2) a particle comprising a silicon and/or silicon compound-containing carbonaceous material deposited onto at least a portion of the surfaces of a carbon particle having a graphite structure. The lithium secondary battery using the electrode material as a negative electrode has high discharging capacity and is excellent in cycle characteristics and characteristics under a load of large current.07-15-2010
20100216035NON-AQUEOUS ELECTROLYTE SECONDARY CELL - A non-aqueous electrolyte secondary cell can be charged at a high voltage of 4.3V or more and has excellent cycle characteristics and excellent high-temperature storage characteristics. The cell includes positive and negative electrodes capable of inserting and extracting lithium, and a non-aqueous electrolyte. The non-aqueous electrolyte contains a non-aqueous solvent, 1,3-dioxane and a dinitrile compound additives, and an electrolyte salt. The non-aqueous solvent contains ethylene carbonate in the range of 25% to 40% by volume under the conditions of 25° C. and 1 atm.08-26-2010
20100143805NITROXIDES FOR LITHIUM-ION BATTERIES - This invention relates to overcharge protection and molecular redox shuttles in rechargeable lithium-ion cells. For this, specific nitroxyls or oxoammonium salts are used in the electrolyte. This invention also relates to a method of producing such lithium-ion cells and to a method of recharging such lithium-ion cells. This invention also pertains to some nitroxyls compounds and oxoammonium salts.06-10-2010
20120141886NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY - A subject for the invention is to improve the cycle characteristics of a high-capacity secondary battery containing an active material packet at a high density, by using a particulate active material having a low aspect ratio.06-07-2012
20100196766SECONDARY BATTERY COMPRISING TERNARY EUTECTIC MIXTURES AND PREPARATION METHOD THEREOF - Disclosed is a secondary battery including a cathode, an anode, a separator, and an electrolyte, wherein the electrolyte includes a ternary eutectic mixture prepared by adding (c) a carbonate-based compound to a eutectic mixture containing (a) an amide group-containing compound and (b) an ionizable lithium salt, and the carbonate-based compound is included in an amount of less than 50 parts by weight based on 100 parts by weight of the electrolyte. The use of the disclosed ternary eutectic mixture having flame resistance, chemical stability, high conductivity, and a broad electrochemical window, as the electrolyte material, improves both the thermal stability and quality of the battery.08-05-2010
20090286164NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and an insulating layer formed on a surface of the positive electrode. The positive electrode includes a lithium nickel composite oxide having a layer structure, and the lithium nickel composite oxide is represented by the general formula: Li11-19-2009
20110117449SILICON-CONTAINING ALLOYS USEFUL AS ELECTRODES FOR LITHIUM-ION BATTERIES - An electrode composition for a lithium ion battery having the formula Si05-19-2011
20100316915Electrolyte for electrochemical device and the electrochemical device thereof - The present invention provides an electrolyte containing novel additive for electrochemical device and the electrochemical device thereof. The additive is a compound represented by below formula (I):12-16-2010
20090068567ANODE FOR SECONDARY BATTERY, METHOD OF MANUFACTURING IT, AND SECONDARY BATTERY - An anode for secondary battery is provided with an anode active material layer containing silicon on an anode current collector. Silicon in the anode active material has an amorphous structure. In a Raman spectrum of silicon having the amorphous structure after an initial charge and discharge, 0.25≦LA/TO and/or 45≦LO/TO is satisfied, where an intensity of a scattering peak occurred in the vicinity of shift position 480 cm03-12-2009
20110008684NON-AQUEOUS ELECTROLYTE SOLUTION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - A non-aqueous electrolyte solution for a lithium secondary battery includes a lithium salt and a carbonate organic solvent. The non-aqueous electrolyte solution further includes a fluoro group-containing sulphonate compound expressed by Chemical Formula 1. When the non-aqueous electrolyte solution is employed for a lithium secondary battery, low-temperature discharging characteristics and life cycle characteristics are greatly improved. Also, even though a battery is stored at a high temperature in a fully-charged state or a charging/discharging process is under progress, the decomposition reaction of a carbonate-based organic solvent is restrained, thereby solving the swelling problem and improving high-temperature life cycle characteristics.01-13-2011
20110123875ELECTROCHEMICAL CELLS WITH IMPROVED SEPARATOR AND ELECTROLYTE - An electrochemical cell is described. The electrochemical cell includes an anode, a cathode, a separator between said anode and said cathode, and an electrolyte. The electrolyte includes a salt dissolved in an organic solvent. The separator in combination with the electrolyte has an area specific resistance less than 2 ohm-cm05-26-2011
20090311610METHOD FOR PRODUCING ELECTROLYTE SOLUTION FOR LITHIUM ION BATTERY AND LITHIUM ION BATTERY USING SAME - There is provided a method for producing an electrolyte solution for lithium ion batteries, in which lithium hexafluorophosphate is used as an electrolyte, comprising the steps of (a) reacting phosphorus trichloride, chlorine and lithium chloride in a nonaqueous organic solvent; and (b) reacting a reaction product of the step (a) formed in the solvent, with hydrogen fluoride.12-17-2009
20100015533NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery including: a positive electrode that contains a transition metal oxide capable of absorbing and desorbing lithium ions; a negative electrode that is capable of absorbing and desorbing lithium ions; a porous film that is interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein at least one selected from inorganic oxide and polyamide is contained in the porous film, and 5 to 15 vol % of ethylene carbonate is contained in a non-aqueous solvent that is contained in the non-aqueous electrolyte.01-21-2010
20120244445ELECTROLYTE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY COMPRISING SAME - In one aspect, a rechargeable lithium battery comprising a non-aqueous electrolyte including an organic solvent; a lithium salt and a substituted 2-fluoroalkoxy-1,3,2-dioxaphospholane 2-oxide is provided. The 2-fluoroalkoxy-1,3,2-dioxaphospholane 2-oxide can be a compound represented by the following Chemical Formula 1.09-27-2012
20110250507BATTERY - A positive electrode includes: a positive electrode collector; and a positive electrode active material layer provided on the positive electrode collector and containing a positive electrode active material and an alkaline earth metal carbonate having a fixed form.10-13-2011
20110250505NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A lithium secondary battery comprises a negative electrode, a positive electrode comprising a current collector, an active cathode material comprising a lithium transition metal complex oxide coated on the current collector, and Si10-13-2011
20110250506NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A lithium secondary battery comprises a negative electrode, a positive electrode comprising a current collector, an active cathode material comprising a lithium transition metal complex oxide, and sulfur, and an electrolyte comprising at least one lithium salt and at least one solvent. The at least one lithium salt is one of LiPF10-13-2011
20100310944ELECTROLYTE OF HIGH TEMPERATURE PROPERTY AND OVERCHARGE-PREVENTION PROPERTY AND SECONDARY BATTERY EMPLOYED WITH THE SAME - Provided is a secondary battery electrolyte having improved high temperature properties and overcharge-prevention properties, particularly improved overcharge-prevention properties under high voltage/high current conditions, in conjunction with a minimized deterioration of the battery performance, by adding 3 to 5% 100 by weight of cyclohexyl benzene (CHB) and 0.2 to 1.5% by weight of 2-fluoro biphenyl (2-FBP) as overcharge-preventing additives to an electrolyte of a lithium secondary battery.12-09-2010
20120034534LITHIUM BATTERIES HAVING ANODES BASED ON POLYTHIOCYANOGEN - A lithium ion battery is provided which contains a cathode, an anode, an electrolyte and a separator, wherein the anode employs polythiocyanogen as an active material.02-09-2012
20100081061ELECTROLYTIC SOLUTION AND BATTERY - An electrolytic solution capable of suppressing the decomposition reaction of the solvent and a battery using it are provided. A cathode (04-01-2010
20090311611Lithium battery - Disclosed is a lithium battery including a silicon negative electrode, a lithium mixed metal oxide positive electrode, a separator disposed between the negative and positive electrodes to define a reservoir region, an electrolytic solution filled in the reservoir region, and a sealant structure wrapped around the silicon negative electrode, the lithium mixed metal oxide positive electrode, the separator, and the electrolytic solution. The electrolytic solution includes an organic solvent, a lithium salt, and an additive. The additive includes a maleimide compound and vinylene carbonate. The silicon negative electrode of the lithium battery employing the described electrolytic solution has higher cycle efficiency and longer operating lifespan.12-17-2009
20110256458Non-Aqueous Electrolyte Secondary Battery - A non-aqueous electrolyte secondary battery which includes a non-aqueous electrolyte solution containing a non-aqueous solvent and an electrolyte, at least two types of lithium salts with an oxalato complex as an anion are contained in the non-aqueous electrolyte solution. The two types of lithium salts are, as an example, lithium bis(oxalate)borate (Li[B(C10-20-2011
20100216036NON-AQUEOUS LIQUID ELECTROLYTE AND NON-AQUEOUS LIQUID ELECTROLYTE SECONDARY BATTERY USING THE SAME - A non-aqueous liquid electrolyte secondary battery comprising a anode electrode and a cathode electrode, capable of intercalating and deintercalating lithium ions, and a non-aqueous liquid electrolyte, having high charging capacity, capable of maintaining excellent characteristics over a long period of time and excellent in discharge capacity retention in particular, is provided.08-26-2010
20100159338Nonaqueous electrolyte and nonaqueous-electrolyte battery - A nonaqueous electrolyte includes an organic solvent and a lithium salt dissolved in the organic solvent, and a quaternary ammonium salt in an amount of 0.06 mol/L or greater and 0.5 mol/L or less, the quaternary ammonium salt having a structure represented by (chemical formula 3):06-24-2010
20100196765Reducing DC Resistance In Electrochemical Cells By Increasing Cathode Basis Weight - The use of an increased cathode weight and thickness or basis weight in a primary electrochemical cell for the purpose of reducing DC resistance (Rdc) is described. This is particularly important when the cell is subjected to high rate discharge conditions of the type typically required for medical device applications, such as activating a cardiac defibrillator. A preferred couple is of a lithium/silver vanadium oxide (Li/SVO) cell or a lithium/copper silver vanadium oxide (Li/CSVO) cell. Reducing cell Rdc by increasing basis weight has the added benefit of increasing the cell's energy density through comparatively greater amounts of active cathode material in a give casing volume.08-05-2010
20110189550OVERCHARGE INHIBITOR, AND NONAQUEOUS ELECTROLYTE SOLUTION AND SECONDARY BATTERY USING THE SAME - An overcharge inhibitor is provided which increases an internal resistance of a battery, being electropolymerized by reaction with a positive electrode at a high potential in overcharging.08-04-2011
20100183926Electrolyte for rechargeable lithium battery and rechargeable lithium battery including the same - An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery including the same, the electrolyte including a lithium salt, a silylborate-based compound, an anhydride component, and a non-aqueous organic solvent.07-22-2010
20110111307LITHIUM SECONDARY CELL - There is provided a lithium secondary cell having specifically excellent discharge capacity, rate characteristics and further cycle characteristics and improved incombustibility (safety). The lithium secondary cell comprises a negative electrode, a non-aqueous electrolytic solution and a positive electrode, in which an active material for the negative electrode comprises lithium titanate and the non-aqueous electrolytic solution comprises a fluorine-containing solvent.05-12-2011
20120301797NON-AQUEOUS ELECTROLYTIC SOLUTION, ELECTROCHEMICAL ELEMENT USING SAME, AND ALKYNYL COMPOUND USED THEREFOR - The present invention provides an excellent nonaqueous electrolytic solution capable of improving low-temperature and high-temperature cycle properties and load characteristics after high-temperature charging storage, an electrochemical element using it, and an alkynyl compound used for it.11-29-2012
20110318654COMPOSITE MATERIALS, PRODUCTION THEREOF AND USE THEREOF IN ELECTRICAL CELLS - A composite material comprising a reaction product of 12-29-2011
20120208092AMORPHOUS ANODE ACTIVE MATERIAL, PREPARATION METHOD OF ELECTRODE USING THE SAME, SECONDARY BATTERY CONTAINING THE SAME, AND HYBRID CAPACITOR - An amorphous anode active material, a preparation method of an electrode using the same, a secondary battery containing the same, and a hybrid capacitor are provided. The amorphous anode active material includes at least one of a metal oxide or a metal phosphate, and the metal oxide or the metal phosphate is amorphous. The metal oxide has the form of MO08-16-2012
20120009487Non-Aqueous Electrolyte Solution For Lithium Secondary Battery And Lithium Secondary Battery Comprising The Same - A non-aqueous electrolyte solution for a lithium secondary battery includes a non-aqueous solvent and a lithium salt dissolved in the non-aqueous solvent. The lithium salt includes LiN(CF01-12-2012
20120208093ELECTROLYTIC SOLUTION AND BATTERY - A secondary battery capable of improving high-temperature characteristics is provided. The secondary battery includes a cathode, an anode and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with the electrolytic solution. A solvent of the electrolytic solution includes a main solvent such as a cyclic carbonate which includes halogen and a sub solvent such as carbonate dimer.08-16-2012
20100143806METHOD FOR PRODUCING LOW-ACID LITHIUM BORATE SALTS AND MIXTURES OF LOW-ACID LITHIUM BORATE SALTS AND LITHIUM HYDRIDE - A mixture of low-acid lithium borate salts and lithium hydride, to methods for producing the same and to the use thereof for battery electrolytes.06-10-2010
20120064415NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY AND LITHIUM ION SECONDARY BATTERY INCLUDING THE SAME - A negative electrode for a lithium ion secondary battery includes a negative electrode core member and a negative electrode mixture layer adhering to the negative electrode core member. The negative electrode mixture layer includes active material particles, a cellulose ether compound, and rubber particles. The cellulose ether compound has a degree of etherification of 0.25 or more and 0.7 or less and an average degree of polymerization of 20 or more and 1200 or less. The negative electrode mixture layer contains remaining particles including a water-insoluble portion of the cellulose ether compound and having a mean particle size of 1 μm or more and 75 μm or less. The bonding strength between the active material particles is 98 N/cm03-15-2012
20120070750ELECTROLYTE FOR A BATTERY - An electrolyte for an electrochemical cell and an electrochemical cell comprising such an electrolyte. The electrolyte comprises at least one conductive salt comprising lithium ions, at least one solvent and at least one wetting agent. The electrochemical cell comprises at least one anode, at least one cathode and at least one separator arranged between the at least one anode and the at least one cathode. The electrolyte may be filled between the at least one anode and the at least one cathode.03-22-2012
20110091776Sandwich Cathode Electrochemical Cell With Wound Electrode Assembly - A new design for a cathode having a configuration of: SVO/first current collector/CF04-21-2011
20120121991HIGH PERFORMANCE LITHIUM OR LITHIUM ION CELL - Disclosed herein are lithium or lithium-ion batteries that employ an aluminum or aluminum alloy current collector protected by conductive coating in combination with electrolyte containing aluminum corrosion inhibitor and a fluorinated lithium imide or methide electrolyte which exhibit surprisingly long cycle life at high temperature.05-17-2012
20120121990ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - An electrolyte for a lithium secondary battery, the electrolyte comprising: a lithium salt, a non-aqueous organic solvent, and an additive represented by Formula 1 below:05-17-2012
20100248039Electrolyte for rechargeable lithium battery and rechargeable lithium battery including the same - Disclosed is an electrolyte for a rechargeable lithium battery that includes a lithium salt, a phosphine compound having at least one trialkylsilyl group and organic solvent, and a rechargeable lithium battery including the electrolyte. The phosphine compound may be tris(trialkylsilyl)phosphine wherein the alkyl groups are the same or different and are each independently selected from C1 to C6 alkyl.09-30-2010
20100209785NONAQUEOUS ELECTROLYTIC SOLUTION SECONDARY BATTERY - A nonaqueous electrolytic solution secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolytic solution having an electrolyte salt dissolved in a nonaqueous solvent. The nonaqueous solvent contains 80% by mass or more of a cyclic carbonate which does not have a carbon-carbon multiple bond and which does not contain a halogen and contains a cyclic sulfone compound having any one of structures represented by the following formulae (1) to (4):08-19-2010
20100209784Power Storage Device - An embodiment of the present invention relates to a power storage device which includes a positive electrode having a positive-electrode current collector with a plurality of first projections, a first insulator provided over each of the plurality of first projections, and a positive-electrode active material provided on a surface of the first insulator and the positive-electrode current collector with the plurality of first projections; a negative electrode having a negative-electrode current collector with a plurality of second projections, a second insulator provided over each of the plurality of second projections, and a negative-electrode active material provided on a surface of the second insulator and the negative-electrode current collector with the plurality of second projections; a separator provided between the positive electrode and the negative electrode; and an electrolyte provided in a space between the positive electrode and the negative electrode and containing carrier ions.08-19-2010
20100209783LITHIUM-ION BATTERY CONTAINING AN ELECTROLYTE COMPRISING AN IONIC LIQUID - A lithium-ion battery containing: a positive electrode, a negative electrode, an electrolyte comprising: an organic solvent chosen from the group comprising carbonates, linear esters of a saturated acid, or a mixture thereof, an additive capable of forming a passivation film on the surface of the negative electrode, at least one lithium salt, at least one ionic liquid for which the percentage by weight in the electrolyte is greater than or equal to 20% and less than 50%; a separator for which the apparent contact angle between the surface thereof and the electrolyte is less than 20°.08-19-2010
20110183218NONAQUEOUS ELECTROLYTE AND NONAQUEOUS ELECTROLYTE BATTERY - A nonaqueous electrolyte includes: a nonaqueous solvent containing 0.1% by volume or more and not more than 50% by volume of at least one member selected from the group consisting of a halogen element-containing chain carbonate represented by the following formula (1) and a halogen element-containing cyclic carbonate represented by the following formula (2); and an electrolyte salt containing a compound represented by the following formula (3) in an amount of 0.001 moles/L or more and not more than 0.5 moles/L relative to the nonaqueous solvent07-28-2011
20110183217NONAQUEOUS SECONDARY BATTERY - A positive electrode active material has an average particle diameter of 4.5 to 15.5 μm and a specific surface area of 0.13 to 0.80 m07-28-2011
20110183216NON-AQUEOUS ELECTROLYTE AND SECONDARY BATTERY COMPRISING THE SAME - Disclosed is a non-aqueous electrolyte including an electrolyte salt and an electrolyte solvent, the non-aqueous electrolyte further including a compound containing both a carboxy group and a (meth)acrylic group, and a secondary battery including the non-aqueous electrolyte. The use of the compound containing both the carboxy group and the (meth)acrylic group as a component for an electrolyte significantly reduces the increase of battery thickness at high temperature storage.07-28-2011
20110183215Layered Electrode For An Electrochemical Cell - A new cathode design is provided comprising a cathode active material mixed with a binder and a conductive diluent in at least two differing formulations. Each of the formulations exists as a distinct cathode layer. After each layer is pressed or sheeted individually, a first one of the layers is contacted to a current collector. The other layer is then contacted to the opposite side of the layer contacting the current collector. Therefore, by using electrodes comprised of layers, where each layer is optimized for a desired characteristic (i.e. high capacity, high power, high stability), the resulting battery will display improved function over a wide range of applications. Such an exemplary cathode is comprised of: SVO (100−x %)/SVO (100−y %)/current collector/SVO (100−y %)/SVO (100−x %), wherein x and y are different and represent percentages of non-active materials.07-28-2011
20120214073NON-AQUEOUS ELECTROLYTE SOLUTION FOR SECONDARY BATTERIES, AND SECONDARY BATTERY - To provide a non-aqueous electrolyte solution for secondary batteries which has excellent compatibility even in a state where a lithium salt is dissolved therein and further has excellent nonflammability and cycle properties, and a secondary battery having such a non-aqueous electrolyte solution for secondary batteries.08-23-2012
20120135317NONAQUEOUS-ELECTROLYTE SECONDARY BATTERY - A subject for the invention is to improve the cycle characteristics of a high-capacity secondary battery containing an active material packed at a high density, by using a particulate active material having a low aspect ratio.05-31-2012
20120219868NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE - The objective of the present invention is to prevent deterioration and expanding of anode active material and to improve charge-discharge cycle characteristics in a non-aqueous electrolyte secondary battery comprising an anode of which current collector has thereon a thin layer of an anode active material containing a metal. To solve this problem, in a non-aqueous electrolyte secondary battery wherein a thin layer of anode active material containing a metal which absorbs and discharges lithium is formed on a current collector and the thin layer of the anode active material is divided into columns by a gap formed along the thickness thereof, a compound represented by the following formula is contained in the non-aqueous electrolyte.08-30-2012
20120171580NON-AQUEOUS ELECTROLYTE SOLUTION FOR SECONDARY BATTERIES - To provide a non-aqueous electrolyte solution for secondary batteries, by which a secondary battery having both high conductivity and stability free from thermal runaway may be obtained. A non-aqueous electrolyte solution for secondary batteries, which comprises a lithium salt (a1) represented by R07-05-2012
20120251896BATTERY STRUCTURES, SELF-ORGANIZING STRUCTURES, AND RELATED METHODS - An energy storage device includes a first electrode comprising a first material and a second electrode comprising a second material, at least a portion of the first and second materials forming an interpenetrating network when dispersed in an electrolyte, the electrolyte, the first material and the second material are selected so that the first and second materials exert a repelling force on each other when combined. An electrochemical device, includes a first electrode in electrical communication with a first current collector; a second electrode in electrical communication with a second current collector; and an ionicaily conductive medium in ionic contact with said first and second electrodes, wherein at least a portion of the first and second electrodes form an interpenetrating network and wherein at least one of the first and second electrodes comprises an electrode structure providing two or more pathways to its current collector.10-04-2012
20120251894ELECTROLYTE WITH SOLID ELECTROLYTE INTERFACE PROMOTERS - The inventors of the subject matter of the present disclosure have developed an electrolyte solution usable in a lithium or lithium-ion battery, among other types of batteries that offers one or more of the following: improved stability (e.g., stable discharge capacities even after several cycles), elimination of the risk of unintentionally producing hydrochloric acid, improved thermal stability, and reduced production costs associated with manufacturing a battery. Indeed, the inventors have discovered an unexpected result that by including an additive to a dinnimitride salt (e.g., LiDN), the discharge capacity of the battery may improve beyond what is available in the prior art, including LiPF6. For example, production costs may be decreased since LiDN is not water-sensitive, so precautions to ensure that the compound is not exposed to water may be avoided. Further benefits include thermal stability since LiDN may be more thermally stable when compared to LiPF6.10-04-2012
20100273066Rechargeable Lithium Air Battery Cell Having Electrolyte with Alkylene Additive - A rechargeable lithium-air battery (10-28-2010
20120315550GRAPHENE-MODIFIED LITHIUM IRON PHOSPHATE POSITIVE ELECTRODE ACTIVE MATERIAL, PREPARATION OF THE SAME AND LITHIUM-ION SECONDARY CELL - The invention relates to a graphene-modified lithium iron phosphate positive electrode active material and a method for preparing the same, as well as a lithium-ion secondary cell based on this positive electrode active material. The positive electrode active material is prepared by a method in which graphene or graphene oxide and lithium iron phosphate are dispersed in an aqueous solution, agitated and ultrasonicated to mix homogeneously and for a mixture, dried to obtain a lithium iron phosphate material compounded with graphene or graphene oxide, and annealed at high temperature to obtain finally a graphene-modified lithium iron phosphate positive electrode active material. When compared with conventional modified lithium cells coated with carbon or doped with conductive polymers, the lithium-ion secondary cell based on this positive electrode active material features high cell capacity, good cycling performance of charge and discharge, long life and high cycle stability, and has great utility value.12-13-2012
20120225359Electrolytes in Support of 5 V Li ion Chemistry - This invention described the preparation of a series of compounds selected from the group comprising tris(1,1,1,3,3,3-hexafluoro-iso-propyl)phosphate, tris(perfluoroethyl)phosphate, tris(perfluoro-iso-propyl)phosphate, bis(1,1,1-trifluoroethyl)fluorophosphate, tris(1,1,1-trifluoroethyl)phosphate, hexakis(1,1,1-trifluoroethoxy)phosphazene, tris(1,1,1-trifluoroethoxy)trifluorophosphazene, hexakis(perfluoro-t-butyl)phosphazene and tris(perfluoro-t-butyl)phosphate. These compounds may be used as co-solvents, solutes or additives in non-aqueous electrolytes in various electrochemical devices. The inclusion of these compounds in electrolyte systems can enable rechargeable chemistries at high voltages that are otherwise impossible with state-of-the-art electrolyte technologies. These compounds are chosen because of their beneficial effect on the interphasial chemistries formed at high potentials, such as 5.0 V class cathodes for new Li ion chemistries. These compounds may be used in Li ion battery technology and in any electrochemical device that employs non-aqueous electrolytes for the benefit of high energy density resultant from high operating voltages.09-06-2012
20120082905HIGH ENERGY DENSITY ALUMINUM BATTERY - Compositions and methods of making are provided for a high energy density aluminum battery. The battery comprises an anode comprising aluminum metal. The battery further comprises a cathode comprising a material capable of intercalating aluminum or lithium ions during a discharge cycle and deintercalating the aluminum or lithium ions during a charge cycle. The battery further comprises an electrolyte capable of supporting reversible deposition and stripping of aluminum at the anode, and reversible intercalation and deintercalation of aluminum or lithium at the cathode.04-05-2012
20120082904HIGH ENERGY DENSITY ALUMINUM BATTERY - Compositions and methods of making are provided for a high energy density aluminum battery. The battery comprises an anode comprising aluminum metal. The battery further comprises a cathode comprising a material capable of intercalating aluminum ions during a discharge cycle and deintercalating the aluminum ions during a charge cycle. The battery further comprises an electrolyte capable of supporting reversible deposition and stripping of aluminum at the anode, and reversible intercalation and deintercalation of aluminum at the cathode.04-05-2012
20110123874ELECTROCHEMICAL CELLS WITH IMPROVED SEPARATOR AND ELECTROLYTE - An electrochemical cell is described. The electrochemical cell includes an anode, a cathode, a separator between said anode and said cathode, and an electrolyte. The electrolyte includes a salt dissolved in an organic solvent. The separator in combination with the electrolyte has an area specific resistance less than 2 ohm-cm05-26-2011
20110223491LITHIUM TITANATE COMPOSITE MATERIAL, PREPARATION METHOD THEREOF, NEGATIVE ACTIVE SUBSTANCE AND LITHIUM ION SECONDARY BATTERY CONTAINING THE SAME - Provided is a composite material having spinel structured lithium titanate, wherein the lithium titanate has a microcrystalline grain diameter of about 36-43 nm and an average particle diameter of about 1-3 μm. The composite material comprises a small amount of TiO09-15-2011
20110236768Non-Aqueous Electrolyte Secondary Battery - A non-aqueous electrolyte secondary battery that includes a non-aqueous electrolyte solution containing a non-aqueous solvent and an electrolyte, and vinylene carbonate (C09-29-2011
20110236767NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, METHOD FOR PRODUCING CARBON-BASED NEGATIVE ELECTRODE ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY AND USE THEREOF - Disclosed are a negative electrode for lithium secondary batteries, containing an active material (A) capable of absorbing/desorbing lithium ions and a binder (B), wherein the active material (A) is a carbon-based material obtained from at least one starting material selected from a group consisting of petroleum cokes and coal cokes and having a mean particle size of from 1 to 30 and a true density of from 1.90 to 2.00 g/cm09-29-2011
20100233550NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery has a positive electrode containing a positive electrode active material, a negative electrode, and a non-aqueous electrolyte solution in which an electrolyte is dissolved in a non-aqueous solvent. The positive electrode active material includes a lithium-containing transition metal oxide that releases oxygen during initial charge, and the non-aqueous solvent contains a fluorinated cyclic carbonate in which fluorine atoms are directly bonded to a carbonate ring.09-16-2010
20120288771RECHARGEABLE LITHIUM BATTERY - In one aspect, a rechargeable lithium battery including a positive electrode having a positive active material, a negative electrode having a negative active material, and an electrolyte is provided. The positive active material can include manganese-based oxide, and the electrolyte can include fluoroethylene carbonate, lithium bis(oxalato)borate, and tris(trialkylsilyl)borate.11-15-2012
20120100437ELECTRICITY STORAGE DEVICE - There can be provided an energy storage device comprising a positive electrode comprising a nitroxyl compound having a nitroxyl cation partial structure in an oxidized state and having a nitroxyl radical partial structure in a reduced state; a negative electrode comprising a carbon material which lithium ions can be reversibly intercalated into and deintercalated from; and an electrolytic solution comprising a lithium salt and an aprotic organic solvent, wherein the negative electrode is a negative electrode comprising the carbon material which lithium ions are previously intercalated into, apart from lithium ions associated with a capacity A of lithium capable of being intercalated and deintercalated in charge and discharge, thereby allowing the energy storage device to simultaneously achieve high energy density, high output characteristics, low environmental load, and high stability in charge and discharge cycles.04-26-2012
20120288772SECONDARY BATTERY, ELECTRONIC DEVICE, ELECTRIC POWER TOOL, ELECTRICAL VEHICLE, AND ELECTRIC POWER STORAGE SYSTEM - A secondary battery includes a cathode, an anode, and an electrolytic solution. The anode or the electrolytic solution, or both contain a metal salt including an unsaturated carbon bond.11-15-2012
20100167131Non-Aqueous Electrolyte and Electrochemical Device With an Improved Safety - Disclosed are a non-aqueous electrolyte comprising a lithium salt and a solvent, the electrolyte containing, based on the weight of the electrolyte, 1-10 wt % of a compound of Formula (1) or its decomposition product, and 1-10 wt % of an aliphatic di-nitrile compound, as well as an electrochemical device comprising the non-aqueous electrolyte. Also disclosed is an electrochemical device comprising: a cathode having a complex formed between a surface of a cathode active material and an aliphatic di-nitrile compound; and a non-aqueous electrolyte containing 1-10 wt % of a compound of Formula (1) or its decomposition product based on the weight of the electrolyte.07-01-2010
20110159382NONAQUEOUS SOLVENT, AND NONAQUEOUS ELECTROLYTE SOLUTION AND NONAQUEOUS SECONDARY BATTERY USING THE SAME - The nonaqueous solvent of the present invention for a nonaqueous secondary battery primarily contains a mixed solvent of a fluorinated cyclic carbonate having a structure in which one fluorine atom is bonded to each of two alkoxy group carbon atoms adjacent to carbonate oxygen atoms and a fluorinated acyclic carbonate having a similar structure. The fluorinated cyclic carbonate, in comparison with the unsubstituted cyclic carbonate, has not only an enhanced thermal stability but also a suppressed reactivity with the positive electrode in a charged state even at elevated temperatures. In addition, it forms a protective film which, with respect to a negative electrode in a charged state, suppresses reactivity between the negative electrode and the nonaqueous electrolyte solution. The fluorinated acyclic carbonate suppresses the reactivity with the positive electrode in a charged state and also lowers the viscosity of the nonaqueous electrolyte solution.06-30-2011
20080241703Nonaqueous electrolyte secondary battery - A nonaqueous electrolyte secondary battery which includes a positive electrode, a negative electrode and a separator stacked and wound in a cylindrical configuration, and which achieves a high energy density and superior cycle performance characteristics.10-02-2008
20090061326CURRENT COLLECTOR, ANODE, AND BATTREY - A battery capable of improving the cycle characteristics is provided. A current collector containing copper (Cu), in which ratio I(200)/I(111) between intensity I (200) of a peak originated in (200) crystal plane of copper obtained by X-ray diffraction and intensity I (111) of a peak originated in (111) crystal plane thereof is in the range from 0.5 to 1.5.03-05-2009
20080220338ELECTRODE CURRENT COLLECTOR AND METHOD FOR PRODUCING THE SAME, ELECTRODE FOR BATTERY AND METHOD FOR PRODUCING THE SAME, AND SECONDARY BATTERY - A current collector forming an electrode for battery is provided. The electrode current collector includes a conductive layer made of copper or a copper alloy. Furthermore, the conductive layer has a plurality of crystallites, the crystallites containing crystallites having a cross-section area of 20 μm09-11-2008
20080220337BATTERY - There is provided a battery including a positive electrode that includes an active material layer formed on a positive electrode current collector; a negative electrode that includes active material layers formed on first and second principal planes of a negative electrode current collector and the active material layer on the second principal plane has an alloyed region smaller than an alloyed region the active material layer has on the first principal plane between the second principal plane and the current collector; and an electrolyte.09-11-2008
20130143129NONAQUEOUS ELECTROLYTE SOLUTION, METHOD FOR PRODUCING SAME, AND NONAQUEOUS ELECTROLYTE BATTERY USING THE ELECTROLYTE SOLUTION06-06-2013
20120251895ELECTROLYTE FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - An electrolyte for a lithium secondary battery, the electrolyte including a lithium salt, a non-aqueous organic solvent, and an additive represented by Formula 1 below:10-04-2012
20130101904NON-AQUEOUS ELECTROLYTE SOLUTION FOR SECONDARY BATTERIES, AND SECONDARY BATTERY - To provide a non-aqueous electrolyte solution for secondary batteries, which has long-term nonflammability and practically sufficient conductivity and which is capable of suppressing a decrease of battery capacity due to charge and discharge at a high rate, and a secondary battery using such a non-aqueous electrolyte solution. A non-aqueous electrolyte solution for secondary batteries, comprising a lithium salt and a solvent for dissolving the electrolyte salt, containing a specific hydrofluoroether, a specific ether other than such a hydrofluoroether, and a predetermined amount of a cyclic carbonate compound which is a compound having a ring made of carbon atoms and oxygen atoms, said ring containing a bond represented by —O—C(═O)—O—, and which contains no carbon-carbon unsaturated bond in its molecule; and a secondary battery comprising such non-aqueous electrolyte solution for secondary batteries, a positive electrode and a negative electrode.04-25-2013
20130115522Manufacture of LiPO2F205-09-2013
20130130126ELECTROCHEMICAL CELL FOR HIGH-VOLTAGE OPERATION AND ELECTRODE COATINGS FOR USE IN THE SAME - Electrochemical cell for high-voltage operation and electrode coatings for the same. The electrochemical cell and electrode coatings of the present invention can preferably withstand charging voltages to at least 5-Volts. In one embodiment, the electrochemical cell can include an anode, a cathode, a separator, and an electrolyte, wherein the anode, the cathode, and the separator are operatively associated with the electrolyte. The cathode can include, for example, a mixture of a metal oxide, an elongated carbon structure, and a conductive material. The metal oxide can be, for example, a lithium-nickel-manganese oxide, such as LiNi05-23-2013
20130130128NONAQUEOUS ELECTROLYTE SOLUTION AND NONAQUEOUS ELECTROLYTE BATTERY USING SAME05-23-2013
20130130127GRAPHITE ANODE ACTIVE MATERIAL FOR USE IN LITHIUM SECONDARY BATTERY - By a method that includes coking a residue resulting from distillation of crude oil under reduced pressure and having API gravity of 1 to 5, an asphaltene content of 10 to 50%, a resin content of 5 to 30%, and a sulfur content of 1 to 12% to obtain coke, pulverizing the coke to obtain a carbon powder, and heating the carbon powder at 1000 to 3500 deg C., a graphite anode active material for use in a lithium secondary battery is obtained that has, in X-ray powder diffraction, d05-23-2013
20110250508MIXED LITHIUM NICKEL COBALT OXIDE AND LITHIUM NICKEL MANGANESE COBALT OXIDE CATHODES - A positive electrode material is provided which is a blended combination of lithium nickel cobalt oxide (and aluminum substituted compounds thereof) and lithium nickel manganese cobalt oxide. Also provided Is a non-aqueous electrolyte lithium secondary battery having high specific capacity and good thermal stability characteristics.10-13-2011
20110311886NONAQUEOUS ELECTROLYTE AND NONAQUEOUS ELECTROLYTE CELL - In one example, a nonaqueous electrolyte and a nonaqueous electrolyte cell are configured to prevent deterioration of the cell capability due to an antioxidant under a high temperature environment with the antioxidant in a small content. In one example, the separator is impregnated with an electrolytic solution. In one example, the electrolytic solution contains a solvent, an electrolyte salt and an antioxidant, the solvent contains a halogenated carbonate ester represented, a content of the halogenated carbonate ester is from 0.1 to 50% by mass, and a content of the antioxidant is from 0.01 to 5,000 ppm.12-22-2011
20110311885NONAQUEOUS ELECTROLYTE AND NONAQUEOUS ELECTROLYTE BATTERY - A nonaqueous electrolyte includes: a nonaqueous solvent; an electrolyte salt; an imide salt; and at least one of a heteropolyacid and a heteropolyacid compound.12-22-2011
20130196236ELECTRODE FOR MAGNESIUM SECONDARY BATTERY AND MAGNESIUM SECONDARY BATTERY INCLUDING THE SAME - Disclosed is an electrode for a magnesium secondary battery. The electrode includes a current collector and a magnesium plating layer formed on the surface of the current collector. The electrode is simple to produce and is inexpensive. In addition, the electrode is in the form of a thin film. Therefore, the electrode is useful for the fabrication of a magnesium secondary battery with high energy density. Further disclosed is a magnesium secondary battery including the electrode.08-01-2013
20130095392Electrolyte Compositions, Methods Of Making And Battery Devices Formed There From - The invention generally encompasses phosphonium ionic liquids, salts, compositions and their use in many applications, including but not limited to: as electrolytes in electronic devices such as memory devices including static, permanent and dynamic random access memory, as electrolytes in energy storage devices such as batteries, electrochemical double layer capacitors (EDLCs) or supercapacitors or ultracapacitors, electrolytic capacitors, as electrolytes in dye-sensitized solar cells (DSSCs), as electrolytes in fuel cells, as a heat transfer medium, among other applications. In particular, the invention generally relates to phosphonium ionic liquids, salts, compositions, wherein the compositions exhibit superior combination of thermodynamic stability, low volatility, wide liquidus range, ionic conductivity, and electrochemical stability. The invention further encompasses methods of making such phosphonium ionic liquids, salts, compositions, operational devices and systems comprising the same.04-18-2013
20130209896ELECTROCHEMICAL CELLS AND USE THEREOF - Electrochemical cells comprise 08-15-2013

Patent applications in class The hetero ring is a cyclic carbonate (e.g., ethylene carbonate, propylene carbonate, etc.)