Patent application number | Description | Published |
20100266882 | Positive Electrode Mixture for Nonaqueous Battery and Positive Electrode Structure - A positive electrode mixture for nonaqueous batteries, is formed by adding 0.5 to 10 wt. parts of an organic acid per 100 wt. parts of an electroconductive additive, to a mixture of a composite metal oxide as a positive electrode active substance, a higher order-structured carbon black as the electroconductive additive, a binder of a fluorine-containing copolymer of at least three comonomers including vinylidene fluoride, tetrafluoroethylene and a flexibility-improving fluorine-containing monomer, and an organic solvent. Further, the mixture is applied on at least one side of an electroconductive sheet, and then dried and compressed to form a positive electrode mixture layer. As a result, it is possible to provide a positive electrode structure having a thick and sound positive electrode mixture layer of a high energy density. | 10-21-2010 |
20120208085 | Vinylidene Fluoride Polymer Powder and Vinylidene Fluoride Polymer Solution - Provided is a vinylidene fluoride polymer powder exhibiting excellent solubility in aprotic polar solvents, and a vinylidene fluoride polymer solution obtained from the powder and an aprotic polar solvent. The vinylidene fluoride polymer powder has an NMP penetration rate of 12 to 100% as measured by an NMP penetration test. | 08-16-2012 |
20120213915 | Process for Producing Heat-Treated Vinylidene Fluoride Polymer Powder and Process for Producing Vinylidene Fluoride Polymer Solution - Provided is a process for producing vinylidene fluoride polymer powder that exhibits excellent solubility with respect to aprotic polar solvents, and a process for producing a vinylidene fluoride polymer solution using vinylidene fluoride polymer powder obtained by the polymer powder production process. The process for producing heat-treated vinylidene fluoride polymer powder includes heat treating raw vinylidene fluoride polymer powder at such a temperature that the temperature of the polymer powder is not less than 125° C. to less than the crystal melting temperature (Tm) of the polymer. | 08-23-2012 |
20130273424 | Vinylidene Fluoride Copolymers and Uses of the Copolymers - Provided are vinylidene fluoride copolymers exhibiting higher adhesion with respect to metal foils than do conventional vinylidene fluoride copolymers, and to provide uses of the vinylidene fluoride copolymers. The vinylidene fluoride copolymers are obtained by copolymerizing vinylidene fluoride with a compound represented by Formula (A). In Formula (A), R | 10-17-2013 |
20150096169 | SLURRY FOR POSITIVE ELECTRODE FOR SULFIDE-BASED SOLID-STATE BATTERY, POSITIVE ELECTRODE FOR SULFIDE-BASED SOLID-STATE BATTERY AND METHOD FOR MANUFACTURING THE SAME, AND SULFIDE-BASED SOLID-STATE BATTERY AND METHOD FOR MANUFACTURING THE SAME - A slurry for a positive electrode for a sulfide-based solid-state battery contains at least a fluorine-based copolymer containing vinylidene fluoride monomer units, a positive electrode active material, and a solvent or a dispersion medium. When a dry volume of the slurry is set to 100% by volume, a content ratio of the fluorine-based copolymer is 1.5 to 10% by volume. | 04-09-2015 |
20150137032 | Process For Producing Heat-Treated Vinylidene Fluoride Polymer Powder And Process For Producing Vinylidene Fluoride Polymer Solution - The present invention relates to a process for producing a vinylidene fluoride polymer solution, which involves dissolving heat-treated vinylidene fluoride polymer powder into an aprotic polar solvent. The heat-treated vinylidene fluoride polymer powder is obtained by heat treating raw vinylidene fluoride polymer powder at such a temperature that the temperature of the vinylidene fluoride polymer powder is not less than 125° C. to less than a crystal melting temperature (Tm) of the polymer. | 05-21-2015 |
20150147462 | RESIN COMPOSITION, FILLER-CONTAINING RESIN FILM FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD FOR PRODUCING FILLER-CONTAINING RESIN FILM FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An object of the present invention is to provide a filler-containing resin film in which shedding of inorganic materials or the like is suppressed, a resin composition that can be used in production of the filler-containing resin film, and a method for producing the filler-containing resin film. The filler-containing resin film of the present invention is a filler-containing resin film comprising: a vinylidene fluoride copolymer obtained by copolymerizing vinylidene fluoride and a compound represented by formula (1) (in formula (1), R | 05-28-2015 |
20150179996 | METHOD FOR PRODUCING RESIN FILM FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND RESIN FILM FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY - An object of the present invention is to provide a method for producing a resin film for a non-aqueous electrolyte secondary battery that does not inhibit the movement of ions such as lithium ions and that is arranged between a separator and a positive or negative electrode; and a resin film for a non-aqueous electrolyte secondary battery obtained by the production method. The method for producing a resin film for a non-aqueous electrolyte secondary battery comprises the steps of: coating a separator with a resin composition containing a solvent and a vinylidene fluoride copolymer obtained by copolymerizing vinylidene fluoride and a compound represented by formula (1) below (coating step); and drying the separator on which the resin composition has been coated (drying step). In formula (1), R | 06-25-2015 |