COMPOSITE GRAPHITE PARTICLE FOR NONAQUEOUS SECONDARY BATTERY NEGATIVE ELECTRODE, NONAQUEOUS SECONDARY BATTERY NEGATIVE ELECTRODE AND NONAQUEOUS SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide composite graphite particles (C) for nonaqueous secondary battery negative electrode in which a large number of metallic particles (B) that can be alloyed with Li exist.SOLUTION: In composite graphite particles (C) for nonaqueous secondary battery negative electrode containing graphite (A) and metallic particles (B), when observing the cross section of the composite graphite particle (C) by means of a scanning electron microscope, such a structure as the graphite (A) is folded is observed, and the abundance ratio of the metallic particles (B) in the composite graphite particles (C), calculated by a specific measurement method is 0.2 or more.