Negative electrode active material for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, method of manufacturing negative electrode material for non-aqueous electrolyte secondary battery, and method of manufacturing non-aqueous electrolyte secondary battery

摘要

The present invention is a negative electrode active material for a nonaqueous electrolyte secondary battery having negative electrode active material particles and the negative electrode active material particles containing a silicon compound (SiO _x : 0.5? _X? 1.6) containing a Li compound, Wherein at least a part of the surface of the silicon compound or the surface of the carbon coating or both of the surfaces of the surface of the silicon compound comprises a metal silicate containing a metal element other than the lithium element and a metal salt containing a metal element other than the lithium element Wherein the negative electrode active material is a negative active material for a nonaqueous electrolyte secondary battery. Thereby, a negative electrode active material for a nonaqueous electrolyte secondary battery which has high stability to an aqueous slurry and has a high capacity and good cycle characteristics and initial efficiency is provided.