Patent application number | Description | Published |
20100028786 | NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - Provided is a non-aqueous electrolyte secondary battery which has excellent high-temperature cycle characteristics, while maintaining the shutdown response speed of the separator and the overcharge characteristics after many repeated cycles at high temperatures. The battery uses a non-aqueous electrolyte containing a carboxylic acid ester and a nitrile compound, and a separator having a porosity of 28 to 54% and an air permeability of 86 to 450 secs/dl. | 02-04-2010 |
20110159359 | NONAQUEOUS SECONDARY BATTERY - A nonaqueous electrolyte of nonaqueous secondary battery contains a nitrile group-containing compound at a concentration of 0.05% by mass or more. 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 m | 06-30-2011 |
20110165453 | NON-AQUEOUS ELECTROLYTIC SECONDARY BATTERY AND POSITIVE ELECTRODE FOR NON-AQUEOUS ELECTROLYTIC SECONDARY BATTERY - A nonaqueous electrolytic secondary battery and a positive electrode for a nonaqueous electrolytic secondary battery are provided. The positive electrode includes a positive electrode active material layer containing a positive electrode active material and a coupling agent represented by a general formula (1). The positive electrode active material includes lithium transition metal oxide particles. At least one rare-earth compound selected from the rare-earth compound group consisting of specific rare-earth hydroxides and specific rare-earth oxyhydroxides is fixed on the surfaces of the lithium transition metal oxide particles in a dispersed form. | 07-07-2011 |
20110183212 | LITHIUM ION POLYMER BATTERY - The lithium ion polymer battery includes a positive electrode plate formed with a positive electrode mixture layer having a lithium composite oxide as a positive electrode active material, a negative electrode plate, a separator, and a gel nonaqueous electrolyte, the positive electrode active material having an average particle diameter of 4.5 to 15.5 μm and a specific surface area of 0.13 to 0.80 m | 07-28-2011 |
20110183214 | NONAQUEOUS 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 m | 07-28-2011 |
20110183217 | NONAQUEOUS 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 m | 07-28-2011 |
20120021265 | NONAQUEOUS SECONDARY BATTERY AND NONAQUEOUS SECONDARY BATTERY PACK - In a flat nonaqueous secondary battery, an electrode assembly formed by stacking or winding a positive electrode and a negative electrode with a separator interposed therebetween is sealed in a laminated outer body together with a nonaqueous electrolyte, and a positive electrode tab and a negative electrode tab are led out from the laminated outer body. The separator has a rupture elongation of 50% or more in at least the TD direction or the MD direction. A metal plate connected to the positive electrode tab is placed on an outer principal surface of the laminated outer body. This structure provides a nonaqueous secondary battery and a nonaqueous secondary battery pack that are extremely safe, being unlikely to emit smoke or explode even when a nail penetrates the battery in a charged state. | 01-26-2012 |
20130017439 | NONAQUEOUS SECONDARY BATTERYAANM Takahashi; KentaroAACI Sumoto-shiAACO JPAAGP Takahashi; Kentaro Sumoto-shi JP - A nonaqueous secondary battery contains di(2-propynyl) oxalate in a proportion of not less than 0.05% and not more than 3% by mass relative to the total mass of the nonaqueous electrolyte, and causing the positive electrode mixture layer to contain a silane coupling agent, or one or more coupling agents expressed by Formula (I) below, in a proportion of not less than 0.003% and not more than 3% by mass relative to the mass of the positive electrode active material: | 01-17-2013 |