METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

To provide a method for producing a positive electrode active material that does not impair the original battery characteristics of the positive electrode active material, improves water resistance, and can suppress the gelation of a positive electrode mixture material paste. A method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries includes a mixing step of preparing a mixture including fine carbon particles, an organic dispersant, a hydrophobic coat forming agent, an organic solvent, and positive electrode active material particles, a drying step of drying the mixture to obtain the mixture containing the organic solvent in a reduced amount, and a heat treatment step of heat-treating the mixture containing the organic solvent in the reduced amount to obtain a coated positive electrode active material.