Patent application number | Description | Published |
20110059372 | POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE SAME - To provide a positive electrode for a nonaqueous electrolyte secondary battery having excellent flexibility and capable of increasing the reliability and productivity, and a nonaqueous electrolyte secondary battery using the positive electrode. The positive electrode for a nonaqueous electrolyte secondary battery includes an active material layer that contains: a positive-electrode active material; a binder made of a fluorine-contained resin containing a vinylidene fluoride unit; and an electrolyte represented by one of the following general formulae (1) and (2): | 03-10-2011 |
20120021282 | POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD FOR PRODUCING THE SAME - A positive electrode for a nonaqueous electrolyte secondary battery, which has excellent nonaqueous electrolyte permeability, a nonaqueous electrolyte secondary battery including the positive electrode, and a method for producing the same. A positive electrode for a nonaqueous electrolyte secondary battery includes a positive electrode current collector, and a positive electrode active material layer. The positive electrode active material layer is formed on the positive electrode current collector and contains a positive electrode active material, a binder, and an acid anhydride. | 01-26-2012 |
20120107682 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - The present invention relates a nonaqueous electrolyte secondary battery with a porous layer containing inorganic particles formed on a surface of a positive electrode and provides a nonaqueous electrolyte secondary battery capable of reducing the incipient failure and having an excellent shelf life characteristic. The nonaqueous electrolyte secondary battery includes: a positive electrode containing a positive-electrode active material; a negative electrode containing a negative-electrode active material; a nonaqueous electrolyte; and a porous layer provided on a surface of the positive electrode, wherein the porous layer contains silica particles and an aqueous binder. | 05-03-2012 |
20120196183 | POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, PRODUCTION METHOD THEREOF AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - The object is to obtain a positive electrode for a nonaqueous electrolyte secondary battery capable of suppressing gas generation even if continuous charging is performed at a high temperature. Provided is a positive electrode for a nonaqueous electrolyte secondary battery comprising a positive-electrode active material, wherein the positive-electrode active material has a surface-treated layer with a silane coupling agent represented by the following general formula (1): | 08-02-2012 |
Patent application number | Description | Published |
20130224597 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY HAVING A LITHIUM-CONTAINING TRANSITION METAL OXIDE COATED WITH A FILM CONTAINING Li, B and C AS A POSITIVE ACTIVE MATERIAL - A nonaqueous electrolyte secondary battery is obtained which shows good cycle characteristics even when charged to a high voltage. The nonaqueous electrolyte secondary battery has a positive electrode containing a positive active material, a negative electrode containing a negative active material and a nonaqueous electrolyte, wherein a lithium-containing transition metal oxide having a layered structure is contained in the positive electrode as the positive active material, an additive which is reductively decomposed in the range of +3.0-1.3 V versus metallic lithium is contained in the nonaqueous electrolyte, and the battery after assembled is overdischarged until a potential of the positive electrode falls down to a reductive potential of the additive or below. | 08-29-2013 |
20140023933 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND PROCESS FOR PRODUCING SAME - Provided are a non-aqueous electrolyte secondary battery having excellent high-temperature durability and capable of reducing the initial percent defective and a process for producing the same. The non-aqueous electrolyte secondary battery includes: a positive electrode containing a positive-electrode active material; negative electrode containing a negative-electrode active material; a non-aqueous electrolyte; and a porous layer provided on a surface of the positive electrode, wherein the porous layer contains inorganic solid electrolyte particles having a crystalline structure of rhombohedral crystal (R3c) with lithium ion conductivity represented by Li | 01-23-2014 |
20140093767 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - To realize high capacity of batteries, an object of the invention is to provide nonaqueous electrolyte secondary batteries which are unlikely to become swollen when charged to a high voltage and allowed to stand in a high temperature atmosphere. The nonaqueous electrolyte secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, a nonaqueous electrolyte, and a separator disposed between the positive electrode and the negative electrode. An inorganic particle layer is disposed between the positive electrode and the separator or between the negative electrode and the separator. The inorganic particle layer contains a polymer with a polyethylene glycol group. The polymer with a polyethylene glycol group has an average molecular weight of not less than 200. | 04-03-2014 |
20140220429 | NONAQUEOUS ELECTROLYTE AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - There is provided a nonaqueous electrolyte that can suppress swelling of a nonaqueous electrolyte secondary battery. A nonaqueous electrolyte for a nonaqueous electrolyte secondary battery | 08-07-2014 |
20140349166 | NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME - The present invention provides a positive electrode for a nonaqueous electrolyte secondary battery in which after continuous charge is performed, an increase in battery thickness is suppressed, and a residual capacity rate is increased by reduction in gas generation amount and also provides a method for manufacturing the positive electrode described above. This positive electrode includes a positive electrode collector and a positive electrode active material layer which contains a positive electrode active material and a phosphate salt represented by NaH | 11-27-2014 |
20150030924 | POSITIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY - [Object] To provide a positive electrode for a nonaqueous electrolyte secondary battery with which characteristics of the nonaqueous electrolyte secondary battery, such as a charge/discharge efficiency, a capacity retention ratio, and a discharge capacity retention ratio are not easily degraded even in the case where the nonaqueous electrolyte secondary battery is continuously charged at a high temperature. | 01-29-2015 |
Patent application number | Description | Published |
20100035162 | NON-AQUEOUS ELECTROLYTE FOR SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - The present invention provides a non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte, wherein the non-aqueous electrolyte comprises a non-aqueous solvent and lithium salt as an electrolyte, and wherein the non-aqueous solvent contains chain fluorinated carboxylic acid ester represented by the formula CH | 02-11-2010 |
20100081062 | NON-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-CH | 04-01-2010 |
20110212364 | POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY USING THE POSITIVE ELECTRODE AND METHOD OF MANUFACTURING THE SAME - A positive electrode for a non-aqueous electrolyte secondary battery, having a positive electrode current collector and a positive electrode active material layer formed on the positive electrode current collector and containing LiCoO | 09-01-2011 |
20120189916 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - A non-aqueous electrolyte secondary battery has a positive electrode containing a positive electrode active material, a negative electrode containing a negative electrode active material, a non-aqueous electrolyte, a separator interposed between the positive electrode and the negative electrode, and a porous layer provided on a surface of the positive electrode. The porous layer contains titania particles, a dispersing agent, and an aqueous binder. The dispersing agent includes silica having an average particle size of less than 100 nm and less than that of the titania particles. | 07-26-2012 |