METHOD OF PRODUCING NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a method of producing a negative electrode active material for nonaqueous electrolyte secondary battery capable of enhancing the charge and discharge capacity of the negative electrode active material for nonaqueous electrolyte secondary battery produced by a convenient production method, and to provide a negative electrode active material for nonaqueous electrolyte secondary battery, a negative electrode for nonaqueous electrolyte secondary battery, and a nonaqueous electrolyte secondary battery.SOLUTION: In a method of producing a negative electrode active material for nonaqueous electrolyte secondary battery, a mixture of silicon oxide particles that are made to SiO(0.8≤X<2.0) and a reductant is calcined under an inert gas atmosphere.