POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

Disclosed is a positive electrode active material for a nonaqueous electrolyte secondary battery, which is obtained by coating particles that are composed of a polyanionic compound and carbon with a lipophilizing agent, and which has an average particle diameter of 1-50 µm. The positive electrode active material for a nonaqueous electrolyte secondary battery preferably has an oil absorption of 20 ml/100 g or less. Since the positive electrode active material has good compatibility with a resin and exhibits excellent fillability and dispersibility in a resin, an electrode sheet which is filled with the positive electrode active material with a high density can be obtained.