Patent application number | Description | Published |
20090017356 | PROTON CONDUCTING MATERIAL, AND ELECTRODE AND FUEL CELL USING THE SAME - To provide a proton conducting material with which an electrode and a fuel cell capable of functioning in a stable manner even without humidification in a temperature range from room temperature to about 200° C. can be achieved. The proton conducting material includes a porous structural material having pores and a heterocyclic organic compound having proton conductivity. The organic compound contained inside the pores has a crystallite size D of 50 nm or less. | 01-15-2009 |
20090110999 | Fuel Cartridge for Fuel Cell, and Fuel Cell - A fuel cartridge ( | 04-30-2009 |
20090111030 | POWER STORAGE DEVICE - A power storage device of the present invention includes a positive electrode, a negative electrode, and an electrolyte. At least one of the positive electrode and the negative electrode includes an organic compound as an active material having a portion contributing to an oxidation-reduction reaction. The organic compound is crystalline in both a charged state and a discharged state. | 04-30-2009 |
20090176158 | NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME - A negative electrode for a lithium secondary battery of the present invention includes a current collector and a negative electrode active material layer carried on the current collector. The negative electrode active material layer includes a plurality of columnar particles. The current collector has a surface including a depression and a plurality of projected regions defined by the depression. The projected regions carry the columnar particles. Further, the present invention relates to a lithium secondary battery using the foregoing negative electrode. According to the present invention, it is possible to provide a high-capacity negative electrode excellent mainly in cycle characteristics for a lithium secondary battery, and a lithium secondary battery including the same. | 07-09-2009 |
20090280407 | BATTERY, ELECTRODE, AND CURRENT COLLECTOR USED THEREFOR - The present invention relates to a current collector including a base portion with a flat face, primary projections projecting from the flat face, and secondary projections projecting from the top of the primary projections. The present invention also relates to a current collector including a base portion with a flat face and primary projections projecting from the flat face, wherein the roughening rate of the top of the primary projections is 3 to 20. By using such a current collector, separation of the active material from the current collector can be inhibited when using an active material that has a high capacity but undergoes a large expansion at the time of lithium ion absorption. | 11-12-2009 |
20100040951 | NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME, AND LITHIUM SECONDARY BATTERY COMPRISING NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY - The negative electrode for a lithium secondary battery includes: a current collector | 02-18-2010 |
20100075217 | LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME - A positive electrode, a separator, and a negative electrode including an alloy-type negative electrode active material are stacked in this order, to form an electrode unit. Such electrode units are stacked with a separator interposed between each pair of the electrode units, to form a stacked electrode assembly. The stacked electrode assembly is fabricated, and the stacked electrode assembly is pressed during an initial charge and an initial discharge. As a result, a rate of increase of the thickness of the stacked electrode assembly due to a predetermined number of charge and discharge cycles becomes equal to or less than 10%. It is thus possible to obtain a lithium ion secondary battery having high capacity and high output, capable of maintaining battery performance such as charge/discharge cycle characteristics at a high level for a long time, and having long service life. | 03-25-2010 |
20100151320 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR MANUFACTURING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A negative electrode for nonaqueous electrolyte secondary battery capable of reversible occlusion and release of lithium ions, comprising current collector ( | 06-17-2010 |
20100151330 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD OF MANUFACTURING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - A negative electrode for a non-aqueous electrolyte secondary battery, which reversibly inserts/extracts lithium ions includes a current collector ( | 06-17-2010 |
20100203387 | ELECTRODE FOR LITHIUM RECHARGEABLE BATTERY AND LITHIUM RECHARGEABLE BATTERY COMPRISING THE ELECTRODE - An electrode for a lithium secondary battery | 08-12-2010 |
20100247990 | BATTERY PACK - A battery pack | 09-30-2010 |
20100266898 | ELECTRODE FOR ELECTROCHEMICAL DEVICE - A problem to be solved by the invention is to provide an electrode for an electrochemical device which has a high capacity, suppresses the separation of an active material due to charge/discharge, and exhibits good cycle characteristics. To solve this problem, in the invention, an electrode | 10-21-2010 |
20100285368 | LITHIUM ION BATTERY - A lithium ion battery includes: a positive electrode; a negative electrode that includes a negative electrode active material layer that contains an alloy-formable active material; an ion permeable insulating layer that is interposed between the positive electrode and the negative electrode; and an ion conductive polymer layer that is interposed between the negative electrode and the ion permeable insulating layer, in which the ion conductive polymer layer is configured to include a negative electrode-side portion and an ion permeable insulating layer-side portion that have different compositions, and the ion permeable insulating layer-side portion is configured to have higher ion conductivity than the negative electrode-side portion. With such a lithium ion battery, charge/discharge cycle characteristics and rate characteristics can be improved. | 11-11-2010 |
20110003208 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A negative electrode for a non-aqueous electrolyte secondary battery including: a current collector; and an active material layer including at least two alloy-based active materials selected from the group consisting of silicon, tin, a silicon oxide, and a tin oxide. The active material layer includes a first portion supported on a surface of the current collector, a second portion supported on a surface of the first portion, and a third portion supported on a surface of the second portion. The first portion includes the silicon oxide or the tin oxide, and the oxygen content in the silicon oxide or the tin oxide in the first portion decreases continuously or stepwise as approaching the second portion. The second portion includes silicon or tin. The third portion includes the silicon oxide or the tin oxide, and the oxygen content in the silicon oxide or the tin oxide in the third portion increases continuously or stepwise with distance from the second portion. | 01-06-2011 |
20110008673 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - In a non-aqueous electrolyte secondary battery | 01-13-2011 |
20110020536 | ELECTRODE FOR LITHIUM SECONDARY BATTERY AND METHOD OF MANUFACTURING SAME - A production method of an electrode for a lithium-ion secondary battery includes: (A) a step of providing a current collector | 01-27-2011 |
20110020688 | PORTABLE ELECTRONIC DEVICE - Provided is a highly safe portable electronic device having a secondary battery as a power source, and including a package, an electronic device body housed in the package, and a battery housing portion housed in the package, in which even if the content melts due to an extremely significant impact applied thereto, discharge of a melt is inhibited. In the portable electronic device, the battery housing portion is a molding with a battery fitting portion for fitting the secondary battery therein, and the battery fitting portion has a covering layer, which includes a temperature suppression layer and a block layer, provided on its surface. | 01-27-2011 |
20110026207 | PORTABLE ELECTRONIC DEVICE - A portable electronic device of the present invention includes a package, an electronic device body, a battery housing portion including a battery fitting portion for fitting a secondary battery therein, a foaming agent-containing layer provided on a surface of the battery housing portion, and a secondary battery to be fitted in the battery fitting portion. The foaming agent-containing layer is normally thin and, in the event of the battery generating heat, the layer turns into a thicker foamed layer which exhibits superior thermal insulation properties. Thus, it is possible to provide a portable electronic device having the degree of freedom in design for size and thickness reduction achieved at a high level, while offering high-level safety and reliability. | 02-03-2011 |
20110027650 | NEGATIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Provided are a negative electrode | 02-03-2011 |
20110033735 | BATTERY PACK - A battery pack | 02-10-2011 |
20110064983 | PORTABLE ELECTRONIC DEVICE - Provided is a highly safe portable electronic device having a secondary battery as a power source, and including a housing, an electronic device body housed in the housing, and a battery housing portion housed in the housing, in which a surface is inhibited from being locally heated to high temperature. In the portable electronic device, the battery housing portion is a molding with a battery fitting portion for fitting the secondary battery therein, and the battery fitting portion has provided on its surface a heat-insulating layer having a thickness of from 500 to 3000 μm and a thermal conductivity of 0.2 W/m·K or lower. | 03-17-2011 |
20110070492 | ELECTRODE FOR A LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY EQUIPPED WITH SAME - A method for producing an electrode for a lithium secondary battery according to the present invention includes (A) a step of causing a vaporized vapor deposition material to be incident on a surface of a current collector | 03-24-2011 |
20110159341 | BATTERY PACK - A battery pack | 06-30-2011 |
20110165454 | BATTERY PACK - A battery pack | 07-07-2011 |
20110267001 | CHARGING METHOD AND CHARGER FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - In a charging method for a non-aqueous electrolyte secondary battery which includes a positive electrode including a lithium-containing composite oxide as an active material, a negative electrode including an alloy-formable negative electrode active material, and a non-aqueous electrolyte, a voltage of the secondary battery is detected. When the detected value is smaller than a predetermined voltage x, charging is performed at a comparatively small current value B. When the detected value is equal to or greater than the predetermined voltage x and smaller than a predetermined voltage z, charging is performed at a comparatively great current value A. When the detected value is equal to or greater than the predetermined voltage z and smaller than a predetermined voltage y, charging is performed at a comparatively small current value C. When the detected value is greater than the predetermined voltage y, constant-voltage charging is performed or charging is terminated. Here, x11-03-2011 | |
20110279088 | BATTERY PACK, DISCHARGE SYSTEM, CHARGE AND DISCHARGE SYSTEM, AND DISCHARGE CONTROL METHOD OF LITHIUM ION SECONDARY BATTERY - A battery pack includes at least a lithium ion secondary battery, a voltage sensor, and a control unit. The control unit controls discharge of the battery by a relatively high end-of-discharge voltage when the use frequency of the battery is relatively low during discharge of the battery. On the other hand, the control unit controls discharge of the battery by a relatively low end-of-discharge voltage when the use frequency of the battery is relatively high. Consequently, it is possible to prevent the utilizable capacity from decreasing more than a practical decrease in the capacity due to increase in the use frequency. | 11-17-2011 |
20120208084 | NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERIES, AND LITHIUM ION SECONDARY BATTERY - A negative electrode for lithium ion secondary batteries, including: a negative electrode current collector having a plurality of protrusions formed on a surface thereof; and a plurality of granular bodies, the granular bodies being supported on the protrusions, respectively, and including an alloy-formable active material capable of absorbing and releasing lithium ions, wherein: the granular bodies have a resin layer on their respective surfaces; and the resin layer includes a first resin component which is at least one selected from polyimides and polyacrylic acid, and a second resin component which is composed of a copolymer including vinylidene fluoride units and hexafluoropropylene units. A lithium ion secondary battery including the above negative electrode. | 08-16-2012 |
20120208087 | LITHIUM SECONDARY BATTERY - A lithium secondary battery according to the present invention includes: a positive electrode having a positive-electrode active material capable of occluding and releasing lithium ions; a negative electrode having a negative-electrode active material capable of occluding and releasing lithium ions; a separator interposed between the positive electrode and the negative electrode; and an electrolyte having lithium-ion conductivity. The positive-electrode active material contains a nickel-type lithium-containing complex oxide. The negative-electrode active material contains a graphite-type material having a reversible capacity of 350 mAh/g or more and an irreversible capacity of 30 mAh/g or less. A ratio Qc/Qa between an irreversible capacity Qc per unit area in a portion of the positive electrode that opposes the negative electrode and an irreversible capacity Qa per unit area in a portion of the negative electrode that opposes the positive electrode is equal to or greater than 0.50 but less than 1.13. As a result, the charge-discharge cycle characteristics can be improved while ensuring a high capacity. | 08-16-2012 |
20120264013 | LITHIUM ION SECONDARY BATTERY - Disclosed is a lithium ion secondary battery including: a positive electrode including a positive electrode active material layer comprising a positive electrode active material capable of absorbing and releasing lithium ions, and a positive electrode current collector; a negative electrode including a negative electrode active material layer comprising an alloy-formable active material, and a negative electrode current collector; a separator interposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte. The positive electrode active material layer has an easily swellable resin having a degree of swelling with the non-aqueous electrolyte of 20% or more, and the negative electrode active material layer has a hardly swellable resin having a degree of swelling with the non-aqueous electrolyte of less than 20%. | 10-18-2012 |
20130082664 | CHARGING METHOD AND CHARGING SYSTEM FOR LITHIUM ION SECONDARY BATTERY - Charging of a lithium ion secondary battery including a positive electrode including a positive electrode active material capable of absorbing and releasing lithium ions, a negative electrode including a negative electrode active material being an alloy-formable active material capable of absorbing and releasing lithium ions, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte is performed. In charging, the remaining capacity and the temperature of the lithium ion secondary battery are detected, and the lithium ion secondary battery is charged until the battery voltage reaches a reference voltage E | 04-04-2013 |
20140322591 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Disclosed is a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, a non-aqueous electrolyte, and a battery case containing them. The negative electrode includes SiO | 10-30-2014 |
20140356723 | NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - Provided is a negative electrode for a non-aqueous electrolyte secondary battery, capable of improving the energy density and the cycle characteristics of the battery without lowering the initial charge/discharge efficiency of the battery. This negative electrode includes a negative electrode active material including a silicon oxide represented by SiO | 12-04-2014 |