Patent application number | Description | Published |
20090224201 | Process of making cathode material containing Ni-based lithium transition metal oxide - The present invention provides for a process of making a Ni-based lithium transition metal oxide cathode active materials used in lithium ion secondary batteries. The cathode active materials are substantially free of Li | 09-10-2009 |
20090325057 | Lithium Secondary Battery and Method for Producing the Same - Disclosed is a method for producing a lithium secondary battery, the method comprising the steps of: (a) distributing or scattering insulating powder partially or totally onto a surface of at least one of a cathode, an anode and a separator; (b) forming an electrode assembly by using the cathode, the anode and the separator; and (c) introducing the electrode assembly into a casing and sealing the casing. A lithium secondary battery obtained from the method is also disclosed. The method for manufacturing a lithium secondary battery, including a step of scattering insulating powder partially or totally onto the surface of a separator or the surface of at least one electrode facing to the separator, significantly reduces generation of an internal short circuit between both electrodes caused by internal or external factors during the assemblage of a battery and generation of low-voltage defects, and thus significantly improves yield of desired batteries. | 12-31-2009 |
20100148115 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Disclosed herein is a cathode active material for a lithium secondary battery, in particular, including a lithium transition metal oxide with a layered crystalline structure in which the transition metal includes a transition metal mixture of Ni, Mn and Co, and an average oxidation number of all transition metals other than lithium is more than +3, and specific conditions represented by the following formulae (1) and (2), 1.106-17-2010 | |
20100187471 | COMPOSITE PRECURSOR FOR ALUMINUM-CONTAINING LITHIUM TRANSITION METAL OXIDE AND PROCESS FOR PREPARATION OF THE SAME - The present invention provides a powdery composite precursor, which comprises a core of a lithium transition metal oxide, and an aluminum hydroxide-based precipitate layer coated on the surface of the core, and a process to prepare the composite precursor. The preparation process comprises the formation of a water based slurry by dispersing lithium transition metal oxide powder in water, and a precipitation reaction of an aluminum salt solution with a base solution where the lithium transition metal particles act as seed particles, whereby a mechanically stable precipitate layer of homogeneous thickness can be achieved. The composite precursor can be converted into aluminum-containing, e.g., aluminum-doped, lithium transition metal oxide suitable for a cathode active material of lithium rechargeable battery by heat treatment. | 07-29-2010 |
20100233540 | LITHIUM IRON PHOSPHATE HAVING OLIVINE STRUCTURE AND METHOD FOR PREPARING THE SAME - Provided is an olivine-type lithium iron phosphate composed of secondary particles having a mean particle diameter (D | 09-16-2010 |
20100239909 | CATHODE MIX CONTAINING HAVING IMPROVED EFFICIENCY AND ENERGY DENSITY OF ELECTRODE - Provided is a cathode mix for lithium secondary batteries, comprising a cathode active material having a composition represented by the following Formula I: LiFe(P | 09-23-2010 |
20100261060 | LITHIUM IRON PHOSPHATE HAVING OLIVINE STRUCTURE AND METHOD FOR ANALYZING THE SAME - Provided is an olivine-type lithium iron phosphate having a composition represented by Formula I, comprising 0.1 to 5% by weight of Li | 10-14-2010 |
20100264363 | ELECTRODE ACTIVE MATERIAL POWDER WITH SIZE DEPENDENT COMPOSITION AND METHOD TO PREPARE THE SAME - The present invention relates to a powderous electrode active material of lithium transition metal oxide Li | 10-21-2010 |
20100297510 | LITHIUM 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 Li | 11-25-2010 |
20110062378 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Disclosed herein is a cathode active material based on lithium nickel oxide represented by Formula 1, wherein the lithium nickel oxide has a nickel content of at least 40% among overall transition metals and is coated with a polymer having a melting point of 80 to 300° C. at a surface thereof. A lithium secondary battery having the disclosed cathode active material has advantages of not deteriorating electrical conductivity while maintaining high temperature stability, so as to efficiently provide high charge capacity. | 03-17-2011 |
20110065000 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Disclosed herein is a cathode active material for a lithium secondary battery, including lithium transition metal oxide, where the lithium transition metal oxide is coated with carbon particles and a polymer resin at a surface thereof, and the polymer resin is a substance inactivated by an electrolyte for a lithium secondary battery and an organic solvent and has a melting point of at least 80° C. | 03-17-2011 |
20110065003 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Disclosed herein is a cathode active material based on lithium nickel-manganese-cobalt oxide represented by Formula 1, wherein the lithium nickel-manganese-cobalt oxide has a nickel content of at least 40% among overall transition metals and is coated with a conductive polymer at a surface thereof. A lithium secondary battery having the disclosed cathode active material has advantages of not deteriorating electrical conductivity while enhancing high temperature stability, so as to efficiently provide high charge capacity. | 03-17-2011 |
20110070501 | ADDITIVE FOR ELECTROCHEMICAL ELEMENT TO IMPROVE SAFETY - Disclosed herein is an additive for improvement in safety of an electrochemical device, including an inner core and an outer coating layer, wherein the inner core is formed using a volume-expandable material fused at more than a predetermined temperature while the outer coating layer is formed using a conductive material with higher conductivity than that of the inner core and covers an outer face of the inner core. | 03-24-2011 |
20110079752 | ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Provided is an electrode active material comprising a nickel-based lithium transition metal oxide (LiMO | 04-07-2011 |
20110081564 | BATTERY SYSTEM CONTAINING PHASE CHANGE MATERIAL-CONTAINING CAPSULES IN INTERIOR CONFIGURATION THEREOF - Provided is a battery system in which an interior part of a battery structure includes particles (phase-change particles) containing materials (phase-change materials) having a high latent heat of phase change at a specific temperature, contained in a capsule made of an inert material. The battery system in accordance with the present invention can prolong a service life of the battery by inhibiting temperature elevation inside the battery under normal operating conditions without substantial effects on size, shape and performance of the battery, and further, can inhibit the risk of explosion resulting from a sharp increase in temperature inside the battery under abnormal operating conditions, thereby contributing to battery safety. | 04-07-2011 |
20110081578 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Disclosed herein is a cathode active material based on lithium nickel-manganese-cobalt oxide represented by Formula 1, wherein the lithium nickel-manganese-cobalt oxide has nickel content of at least 40% among overall transition metals and is coated with an ion-conductive solid compound at a surface thereof. A lithium secondary battery having the disclosed cathode active material has advantages of not deteriorating electrical conductivity while maintaining high temperature stability, so as to efficiently provide high charge capacity. | 04-07-2011 |
20110086274 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Disclosed herein is a cathode active material based on lithium nickel-manganese-cobalt oxide represented by Formula 1, wherein an ion-conductive solid compound and conductive carbon are applied to a surface of the lithium nickel-manganese-cobalt oxide. A lithium secondary battery having the disclosed cathode active material has improved rate properties and high temperature stability, in turn embodying excellent cell performance. | 04-14-2011 |
20110089367 | PRECURSOR FOR PREPARATION OF LITHIUM TRANSITION METAL OXIDE - Provided is a precursor for the preparation of a lithium transition metal oxide that is used for the preparation of a lithium transition metal oxide as a cathode active material for a lithium secondary battery, through a reaction with a lithium-containing compound, wherein the precursor contains two or more transition metals, and sulfate ion (SO | 04-21-2011 |
20110114873 | MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE - Provided is a lithium mixed transition metal oxide having a composition represented by Formula I of Li | 05-19-2011 |
20110114874 | METHOD OF PREPARING MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE - Provided is a method for preparing a lithium mixed transition metal oxide, comprising subjecting Li | 05-19-2011 |
20110117662 | MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE - Provided is a cathode active material containing a Ni-based lithium mixed transition metal oxide. More specifically, the cathode active material comprises the lithium mixed transition metal oxide having a composition represented by Formula I of Li | 05-19-2011 |
20110135972 | HIGH POWER SECONDARY BATTERY SYSTEM COMPRISING ASYMMETRIC CHARGED CELLS - Disclosed herein is a battery system including two or more kinds of cell lines having different charge and discharge characteristics, wherein each cell line includes one or more battery cells connected in series with each other. In the battery system according to the present invention, the battery cells of at least one cell line exhibit a high-rate charge characteristic, whereas the battery cells of at least another cell line exhibit a high-rate discharge characteristic. Consequently, the high-rate charge and discharge characteristics are improved, and the balance between the charge and discharge characteristics is maintained, whereby the battery system according to the present invention is used as a power source having a high power. | 06-09-2011 |
20110140036 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Provided is a cathode active material which is lithium transition metal oxide having an α-NaFeO | 06-16-2011 |
20110151328 | CATHODE MATERIALS AND LITHIUM SECONDARY BATTERY CONTAINING THE SAME - Provided is a cathode active material composed of lithium nickel oxide represented by Formula 1, wherein the lithium nickel oxide contains nickel in an amount of 40% or higher, based on the total weight of transition metals, and the cathode active material comprises a first coating layer provided on the surface thereof and a second coating layer provided on the surface of the first coating layer, wherein the first coating layer is composed of a non-reactive material selected from the group consisting of oxides, nitrides, sulfides and mixtures or complexes thereof and the second coating layer is composed of a carbon-based material. | 06-23-2011 |
20110165463 | CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY CONTAINING THE SAME - Disclosed herein is a cathode active material based on lithium nickel oxide represented by Formula 1, wherein the lithium nickel oxide has a nickel content of at least 40% among overall transition metals and is coated with a compound not reacting with an electrolyte (“non-reactive material”), which is selected from a group consisting of oxides, nitrides, sulfides and a mixture or combination thereof not reacting with an electrolyte, as well as a carbon material, at a surface of the lithium nickel oxide. | 07-07-2011 |
20110168944 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Provided is a cathode active material for a lithium secondary battery, including a lithium-transition metal composite oxide represented by the following formula (1), which contains an excess of lithium, so as to exhibit enhanced rate characteristics under high rate charge/discharge conditions: Lii+aNi′bNi″cMndCoeO2 (1) wherein each of a, b, c, d and e has the same meaning as defined in the disclosure. The cathode active material according to the present invention includes an excess of lithium and, different from conventional technologies, a lithium-transition metal composite oxide containing a nickel element with a predetermined oxidation number, so that the active material exhibits a stable crystal structure and excellent rate characteristics under high rate charge/discharge conditions. | 07-14-2011 |
20110175021 | PROCESS OF MAKING CATHODE MATERIAL CONTAINING NI-BASED LITHIUM TRANSITION METAL OXIDE - The present invention provides for a process of making a Ni-based lithium transition metal oxide cathode active materials used in lithium ion secondary batteries. The cathode active materials are substantially free of Li | 07-21-2011 |
20110195303 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Disclosed herein is a cathode active material for a lithium secondary battery, in particular, including a lithium transition metal oxide with a layered crystalline structure in which the transition metal includes a transition metal mixture of Ni, Mn and Co, and an average oxidation number of all transition metals other than lithium is more than +3, and specific conditions represented by the following formulae (1) and (2), 1.108-11-2011 | |
20110287315 | CATHODE ACTIVE MATERIAL PROVIDING IMPROVED EFFICIENCY AND ENERGY DENSITY OF ELECTRODE - Provided is a cathode active material having a composition represented by the following Formula I: LiFe(P | 11-24-2011 |
20110309290 | STOICHIOMETRIC LITHIUM COBALT OXIDE AND METHOD FOR PREPARATION OF THE SAME - The present invention provides a LiCoO | 12-22-2011 |
20110315917 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Provided is a lithium transition metal oxide having an α-NaFeO | 12-29-2011 |
20120012780 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Provided is a cathode active material which is lithium transition metal oxide having an α-NaFeO | 01-19-2012 |
20120012781 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Provided is a lithium transition metal oxide having an α-NaFeO | 01-19-2012 |
20120028134 | LITHIUM SECONDARY BATTERY WITH IMPROVED ENERGY DENSITY - Provided is a lithium secondary battery with enhanced energy density including a cathode using a cathode active material containing lithium mixed transition metal oxide absorbing and discharging lithium ions, wherein a final discharge voltage is in the range of about 1.5 V to about 2.75 V. A final discharge voltage can be reduced to 1.5 V to 2.75 V from 3.0 V by using various lithium mixed transition metal oxides as a cathode active material, or by using the various lithium mixed transition metal oxides with the LCO-based cathode material mixed. Compared to typical LCO-based cathode materials of which capacity and energy density do not change even if a final discharge voltage is decreased, a cathode material of the present invention results in further improving capacity by 10-20% as the final discharge voltage is decreased. | 02-02-2012 |
20120043499 | NOVEL PRECURSOR FOR THE PREPARATION OF A LITHIUM COMPOSITE TRANSITION METAL OXIDE - Provided is a transition metal precursor comprising a composite transition metal compound represented by Formula 1, as a transition metal precursor used in the preparation of a lithium-transition metal composite oxide: | 02-23-2012 |
20120064395 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Disclosed herein is a cathode active material for a lithium secondary battery, in particular, including a lithium transition metal oxide with a layered crystalline structure in which the transition metal includes a transition metal mixture of Ni, Mn and Co, and an average oxidation number of all transition metals other than lithium is more than +3, and specific conditions represented by the following formulae (1) and (2), 1.103-15-2012 | |
20120097905 | CATHODE BASED UPON TWO KINDS OF COMPOUNDS AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Provided is a cathode for lithium secondary batteries comprising a combination of one or more compounds selected from Formula 1 and one or more compounds selected from Formula 2. The cathode provides a high-power lithium secondary battery composed of a non-aqueous electrolyte which exhibits long lifespan, long-period storage properties and superior stability at ambient temperature and high temperatures. | 04-26-2012 |
20120112125 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Provided is a cathode active material for a lithium secondary battery, including a lithium-transition metal composite oxide represented by the following formula (1), which contains an excess of lithium, so as to exhibit enhanced rate characteristics under high rate charge/discharge conditions: Lii+aNi′bNi″cMndCoeO2 (1) wherein each of a, b, c, d and e has the same meaning as defined in the disclosure. The cathode active material according to the present invention includes an excess of lithium and, different from conventional technologies, a lithium-transition metal composite oxide containing a nickel element with a predetermined oxidation number, so that the active material exhibits a stable crystal structure and excellent rate characteristics under high rate charge/discharge conditions. | 05-10-2012 |
20120112139 | CATHODE BASED UPON TWO KINDS OF COMPOUNDS AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Provided is a cathode for lithium secondary batteries comprising a combination of one or more compounds selected from Formula 1 and one or more compounds selected from Formula 2. The cathode provides a high power lithium secondary battery composed of a non-aqueous electrolyte which exhibits long lifespan, long-period storage properties and superior stability at ambient temperature and high temperatures. | 05-10-2012 |
20120135281 | BATTERY SYSTEM CONTAINING PHASE CHANGE MATERIAL-CONTAINING CAPSULES IN INTERIOR CONFIGURATION THEREOF - Provided is a battery system in which an interior part of a battery structure includes phase-change particles including a capsule and phase-change materials. The phase-change materials have a high latent heat of phase change at a specific temperature, and are encapsulated in the capsule. The capsule is made of an inert material. The battery system in accordance with the present invention can prolong a service life of the battery by inhibiting temperature elevation inside the battery under normal operating conditions without substantial effects on size, shape and performance of the battery, and further, can inhibit the risk of explosion resulting from a sharp increase in temperature inside the battery under abnormal operating conditions, thereby contributing to battery safety. | 05-31-2012 |
20120288761 | ELECTRODE ADDITIVES COATED WITH ELECTRO CONDUCTIVE MATERIAL AND LITHIUM SECONDARY COMPRISING THE SAME - Provided are an electrode additive coated with a coating material made of electrically conductive materials such as metal hydroxides, metal oxides or metal carbonates, and an electrode and a lithium secondary battery comprising the same. The electrode additive in accordance with the present invention can improve high temperature storage characteristics of the battery, without deterioration of performance thereof. | 11-15-2012 |
20120288764 | NOVEL POSITIVE ELECTRODE FOR SECONDARY BATTERY - Disclosed herein are a cathode for a secondary battery, which includes a combination of one or more selected from compounds represented by Formula 1 and or more selected from compounds represented by Formula 2, as illustrated below, and a secondary battery having the same, | 11-15-2012 |
20130022866 | CARBON-COATED LITHIUM IRON PHOSPHATE OF OLIVINE CRYSTAL STRUCTURE AND LITHIUM SECONDARY BATTERY USING THE SAME - Disclosed is lithium iron phosphate having an olivine crystal structure, wherein the lithium iron phosphate has a composition represented by the following Formula 1 and carbon (C) is coated on the particle surface of the lithium iron phosphate containing a predetermined amount of sulfur (S). | 01-24-2013 |
20130029226 | LITHIUM IRON PHOSPHATE OF OLIVINE CRYSTAL STRUCTURE AND LITHIUM SECONDARY BATTERY USING THE SAME - Disclosed is lithium iron phosphate having an olivine crystal structure wherein carbon (C) is coated on particle surfaces of the lithium iron phosphate, wherein, when a powder of the lithium iron phosphate is dispersed in water, water is removed from the resulting dispersion and the resulting lithium iron phosphate residue is quantitatively analyzed, a ratio of the carbon-released lithium iron phosphate with respect to the total weight of the carbon-coated lithium iron phosphate is 0.005% by weight or less. Advantageously, the olivine-type lithium iron phosphate is not readily separated through uniform thin film coating on the surface of the lithium iron phosphate and exhibits superior conductivity and density, since carbon is coated on particle surfaces of lithium iron phosphate in a state in which the amount of carbon released in water is considerably small. | 01-31-2013 |
20130034776 | LITHIUM IRON PHOSPHATE CONTAINING SULFUR COMPOUND BASED UPON SULFIDE BOND AND LITHIUM SECONDARY BATTERY USING THE SAME - Disclosed is lithium iron phosphate having an olivine crystal structure, wherein the lithium iron phosphate has a composition represented by the following Formula 1, a sulfur compound with a sulfide bond is contained, as an impurity, in the lithium iron phosphate particles, and carbon (C) is coated on particle surfaces of the lithium iron phosphate: | 02-07-2013 |
20130040186 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Disclosed is a cathode active material for secondary batteries, comprising at least one compound selected from the following Formula 1: xLi | 02-14-2013 |
20130065118 | CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Disclosed herein is a cathode active material for a secondary battery, which includes a combination of one or more selected from compounds represented by Formula 1, one or more selected from compounds represented by Formula 2, and one or more selected from compounds represented by Formula 3, | 03-14-2013 |
20130119325 | CATHODE FOR SECONDARY BATTERY - Disclosed is a cathode for secondary batteries comprising a compound having a transition metal layer containing lithium as at least one compound selected from the following formula 1: (1−x)Li(Li | 05-16-2013 |
20130122363 | CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Disclosed is a cathode active material for secondary batteries comprising at least one compound selected from the following formula 1: (1−s−t)[Li(Li | 05-16-2013 |
20130129596 | DEVICE FOR PREPARING INORGANIC COMPOUND AND METHOD FOR PREPARING INORGANIC COMPOUND USING THE SAME - Disclosed is a device for continuously preparing an inorganic slurry by a hydrothermal method including a precursor liquid or slurry stream containing a precursor for preparing an inorganic substance, a supercritical liquid stream containing high-temperature and high-pressure water, and a reactor into which the precursor liquid or slurry stream and the supercritical liquid stream are injected, and from which an inorganic slurry obtained as a reaction product of hydrothermal reaction between the precursor liquid or slurry stream and the supercritical liquid stream is continuously discharged, wherein an injection direction of the precursor liquid or slurry stream forms an angle of 0 to 60 degrees with respect to a discharge direction of an inorganic slurry stream (inorganic substance stream) containing the inorganic slurry in the reactor. | 05-23-2013 |
20130130110 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Disclosed herein is a cathode active material based on lithium nickel-manganese-cobalt oxide represented by Formula 1, wherein the lithium nickel-manganese-cobalt oxide has a nickel content of at least 40% among overall transition metals and is coated with a conductive polymer at a surface thereof. A lithium secondary battery having the disclosed cathode active material has advantages of not deteriorating electrical conductivity while enhancing high temperature stability, so as to efficiently provide high charge capacity. | 05-23-2013 |
20130130118 | ANODE FOR SECONDARY BATTERY - Disclosed is an anode for secondary batteries comprising a combination of an anode active material having a relatively low charge/discharge voltage and a relatively low hardness (A) and an anode active material having a relatively high charge/discharge voltage and a relatively high hardness (B), wherein the anode active material (A) is surface-coated with carbon having a high hardness or a composite thereof, and a particle size of the anode active material (B) is smaller than a size of a space formed by the anode active materials (A) arranged in a four-coordination. The anode provides an electrode that prevents lithium precipitation caused by overvoltage, improves ionic conductivity as well as electric conductivity and exhibits superior capacity. | 05-23-2013 |
20130171518 | CATHODE ACTIVE MATERIAL FOR SECONDARY BATTERIES - Disclosed is a cathode active material represented by the following Formula 1, the cathode active material being in the form of a solid solution or a composite, and a secondary battery including the cathode active material. | 07-04-2013 |
20130177816 | CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Disclosed is a cathode active material for secondary batteries comprising one or more compounds having a layered-crystal structure, represented by the following Formula 1, wherein a transition metal layer contains Li, in an amount lower than 20%, based on a total amount of a transition metal site, and a ratio of Ni positioned in a lithium layer, that is, a cation mixing ratio is 1% to 4.5%, based on a total amount of a lithium site in the lithium layer to stably support the layered-crystal structure: (1-s-t)[Li(Li | 07-11-2013 |
20130196232 | MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE - Provided is a lithium mixed transition metal oxide having a composition represented by Formula I of Li | 08-01-2013 |
20130202946 | CATHODE ACTIVE MATERIAL FOR SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - Disclosed is lithium iron phosphate having an olivine crystal structure, wherein the length in the direction [001] is greater than the length in the direction [010] when the Li+ diffusion direction is the direction [010] in the lattice structure of the crystal. | 08-08-2013 |
20130216902 | CARBON-COATED LITHIUM IRON PHOSPHATE OF OLIVINE CRYSTAL STRUCTURE AND LITHIUM SECONDARY BATTERY USING THE SAME - Disclosed is a lithium iron phosphate with an olivine crystal structure wherein the lithium iron phosphate has a composition represented by the following Formula 1 and carbon (C) is coated on the surface of the lithium iron phosphate by chemical bonding via a heterogeneous element other than carbon. Li | 08-22-2013 |
20130228725 | CATHODE BASED UPON TWO KINDS OF COMPOUNDS AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Provided is a cathode for lithium secondary batteries comprising a combination of one or more compounds selected from Formula 1 and one or more compounds selected from Formula 2. The cathode provides a high-power lithium secondary battery composed of a non-aqueous electrolyte which exhibits long lifespan, long-period storage properties and superior stability at ambient temperature and high temperatures. | 09-05-2013 |
20130234064 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Provided is a lithium transition metal oxide having an α-NaFeO | 09-12-2013 |
20130248758 | MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE - Provided is a cathode active material containing a Ni-based lithium mixed transition metal oxide. More specifically, the cathode active material comprises the lithium mixed transition metal oxide having a composition represented by Formula I of Li | 09-26-2013 |
20130284972 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Provided is a cathode active material which is lithium transition metal oxide having an α-NaFeO | 10-31-2013 |
20130292604 | CATHODE BASED UPON TWO KINDS OF COMPOUNDS AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME - Provided is a cathode for lithium secondary batteries comprising a combination of one or more compounds selected from Formula 1 and one or more compounds selected from Formula 2. The cathode provides a high power lithium secondary battery composed of a non-aqueous electrolyte which exhibits long lifespan, long-period storage properties and superior stability at ambient temperature and high temperatures. | 11-07-2013 |
20130334457 | METHOD OF PREPARING MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE - Provided is a method for preparing a lithium mixed transition metal oxide, comprising subjecting Li | 12-19-2013 |
20140050351 | APPARATUS AND METHOD FOR RECEIVING UNMANNED MAIL - Provided is an apparatus for receiving an unmanned mail capable of automatically acquiring the address information even though the user does not directly input the address information. The apparatus acquires address information of an addressee by automatically recognizing the address of the mail when the address is written on the mail, and acquires the address information of the addressee through the paper on which the address is printed or written, identification, and biometric recognition when the address is not written on the mail. The apparatus may acquire the address information of the addressee through a mail sender's voice. | 02-20-2014 |
20140050656 | SURFACE-TREATMENT METHOD OF CATHODE ACTIVE MATERIAL AND CATHODE ACTIVE MATERIAL FORMED THEREFROM - The present invention provides a method for treating the particle surface of a cathode active material for a lithium secondary battery, the method comprising (a) preparing a cathode active material having a lithium compound; (b) generating a plasma from a gas comprising at least one of a fluorine-containing gas and a phosphorus-containing gas as a part of a reactive gas; and (c) removing lithium impurities present on the particle surface of the cathode active material with the plasma. In accordance with the present invention, the amount of the lithium impurities present on the particle surface of the cathode active material can be reduced to suppress a side reaction of the lithium impurities and an electrolyte. | 02-20-2014 |
20140065058 | APPARATUS FOR PREPARING CATHODE ACTIVE MATERIAL PRECURSOR FOR LITHIUM SECONDARY BATTERIES AND METHOD FOR PREPARING THE SAME USING THE APPARATUS - Provided are an apparatus for preparing a cathode active material precursor for lithium secondary batteries including a cylindrical outer chamber, an inner cylinder that has the same central axis as the outer chamber and is mounted to rotatably move along the central axis, an electric motor to transfer power to rotate the inner cylinder, a reactant inlet disposed on the outer chamber, to add reactants to a space between the outer chamber and the inner cylinder, and an outlet disposed in the outer chamber, to obtain reaction products after reaction in the space between the outer chamber and the inner cylinder, and a method for preparing a cathode active material precursor for lithium secondary batteries using the apparatus. | 03-06-2014 |
20140129474 | SYSTEM AND METHOD OF AUTOMATICALLY SETTING SORTING BOXES FOR AUTOMATIC MAIL SORTING - Provided are a system and a method for automatically setting sorting boxes for automatic mail sorting, and as the position of a sorting box of mail is informed by automatically changing sorting band information depending on a change of a postal area and using address information and barcode information of mail and the system is designed so as for a mailman not to perform PDA work for registered mail, so that the mailman needs not modifying sorting box information with the change of the postal area all the time and the mailman can easily find the sorting box of the corresponding mail although the position of the sorting box is changed by informing the mailman of the position of the sorting box of the corresponding mail, and the corresponding sorting box can be automatically known even though the postal area is changed or a new postal area is assigned. | 05-08-2014 |
20140149309 | SYSTEM AND METHOD FOR VERIFYING REGISTERED MAIL RECEIPT - A registered mail receipt verification system includes: a distribution integration information apparatus registering provisional receipt data for customer's receipt; a receipt information linking apparatus receiving the provisional receipt data from the distribution integration information apparatus and generating verification receipt data for at least one of an address and a postal code; and a registered mail verification apparatus registering the verification receipt data generated by the receipt information linking apparatus, reading a registered barcode for provided registered mail, and generating a verification result by comparison with the registered verification receipt data. | 05-29-2014 |
20140220445 | CARBON-COATED LITHIUM IRON PHOSPHATE OF OLIVINE CRYSTAL STRUCTURE AND LITHIUM SECONDARY BATTERY USING THE SAME - Disclosed is lithium iron phosphate having an olivine crystal structure, wherein the lithium iron phosphate has a composition represented by the following Formula 1 and carbon (C) is coated on the particle surface of the lithium iron phosphate containing a predetermined amount of sulfur (S). | 08-07-2014 |
20140234203 | REACTOR FOR PREPARING PRECURSOR OF LITHIUM COMPOSITE TRANSITION METAL OXIDE AND METHOD FOR PREPARING PRECURSOR - Disclosed is a reactor for preparing a precursor of lithium composite transition metal oxide for lithium secondary batteries, the reactor having a closed structure including a stationary hollow cylinder; a rotary cylinder having the same axis as the stationary hollow cylinder and an outer diameter smaller than an inner diameter of the stationary hollow cylinder, an electric motor to generate power, enabling rotation of the rotary cylinder, a rotation reaction area disposed between the stationary hollow cylinder and the rotary cylinder, wherein ring-shaped vortex pairs that are uniformly arranged in a rotation axis direction and rotate in opposite directions are formed in the rotation reaction area, and an inlet through which a reactant fluid is fed into the rotation reaction area and an outlet through which the reactant fluid is discharged from the rotation reaction area. | 08-21-2014 |
20140234718 | CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERY FOR CONTROLLING IMPURITY OR SWELLING INCLUDING THE SAME AND METHOD OF PREPARING CATHODE ACTIVE MATERIAL WITH ENHANCED PRODUCTIVITY - Disclosed are a cathode active material represented by Formula 1 below and including a metal cation having a greater ionic radius than a Ni cation and represented by M of Formula 1 at a Li cation site or in an empty space within a crystal lattice so as to prevent mixing of Ni cations into a Li layer, a lithium secondary battery including the same, and a method of preparing the cathode active material which has improved productivity. | 08-21-2014 |
20140242455 | Si/C COMPOSITE, METHOD OF PREPARING THE SAME, AND ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY INCLUDING THE Si/C COMPOSITE - Provided are a Si/C composite, in which carbon (C) is dispersed in an atomic state in a silicon (Si) particle, and a method of preparing the Si/C composite. | 08-28-2014 |
20140246620 | MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE - Provided is a lithium mixed transition metal oxide having a composition represented by Formula I of Li | 09-04-2014 |
20140272587 | PRECURSOR PARTICLES OF LITHIUM COMPOSITE TRANSITION METAL OXIDE FOR LITHIUM SECONDARY BATTERY AND CATHODE ACTIVE MATERIAL COMPRISING THE SAME - Disclosed are precursor particles of a lithium composite transition metal oxide for lithium secondary batteries, wherein the precursor particles of a lithium composite transition metal oxide are composite transition metal hydroxide particles including at least two transition metals and having an average diameter of 1 μm to 8 μm, wherein the composite transition metal hydroxide particles exhibit monodisperse particle size distribution and have a coefficient of variation of 0.2 to 0.7, and a cathode active material including the same. | 09-18-2014 |
20140299813 | CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Provided is a lithium transition metal oxide having an α-NaFeO | 10-09-2014 |
20140302615 | MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE - Provided is a cathode active material containing a Ni-based lithium mixed transition metal oxide. More specifically, the cathode active material comprises the lithium mixed transition metal oxide having a composition represented by Formula I of Li | 10-09-2014 |
20140346394 | ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Provided is an electrode active material comprising a nickel-based lithium transition metal oxide (LiMO | 11-27-2014 |
20140353545 | METHOD OF PREPARING MATERIAL FOR LITHIUM SECONDARY BATTERY OF HIGH PERFORMANCE - Provided is a method for preparing a lithium mixed transition metal oxide, comprising subjecting Li | 12-04-2014 |
20140353548 | STOICHIOMETRIC LITHIUM COBALT OXIDE AND METHOD FOR PREPARATION OF THE SAME - The present invention provides a LiCoO | 12-04-2014 |
20140356719 | ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY - Provided is an electrode active material comprising a nickel-based lithium transition metal oxide (LiMO | 12-04-2014 |
20140356726 | HOLLOW SILICON-BASED PARTICLE, PREPARATION METHOD THEREOF AND ANODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A hollow silicon-based particle including silicon (Si) or silicon oxide (SiO | 12-04-2014 |
20150056508 | CATHODE ACTIVE MATERIAL FOR SECONDARY BATTERY WITH ENHANCED LIFESPAN CHARACTERISTICS AND METHOD OF PREPARING THE SAME - Disclosed is a cathode active material in which lithium cobalt oxide particles and manganese (Mn) or titanium (Ti)-containing lithium transition metal oxide particles co-exist and a method of preparing the same. | 02-26-2015 |