POSITIVE ELECTRODE MIXTURE FOR NONAQUEOUS BATTERY AND POSITIVE ELECTRODE STRUCTURE

摘要

Disclosed is a positive electrode mixture for nonaqueous batteries, which is obtained by adding an organic acid into an electrode mixture which is composed of a positive electrode active material composed of a complex metal oxide, a conductive assistant composed of a high structure carbon black, a binder composed of a fluorine-containing copolymer of three or more components including vinylidene fluoride, tetrafluoroethylene and a flexibility-modified fluorine-containing monomer, and an organic solvent. The organic acid is added into the electrode mixture in an amount of 0.5-10 parts by weight per 100 parts by weight of the conductive assistant. Also disclosed is a positive electrode structure which is obtained by applying the electrode mixture over at least one surface of a collector, and drying and compressing the applied mixture thereon so that a positive electrode mixture layer is formed on the collector. The positive electrode structure has a thick and sound positive electrode mixture layer having high energy density.