POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide an FeOHSOpositive electrode active material exhibiting excellent battery capacity.SOLUTION: There are provided: a positive electrode active material for a lithium secondary battery having a composition represented by general formula: FeOHSOand a particle size of 700 nm or less; a method for producing the positive electrode active material; and a lithium secondary battery having a positive electrode containing the positive electrode active material.