NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery including a negative electrode active material consisting of silicon oxide, and arranged by the process including the step of rapidly pre-doping lithium into a negative electrode while suppressing the deformation of the negative electrode.SOLUTION: A nonaqueous electrolyte secondary battery comprises: a positive electrode; a negative electrode; and a nonaqueous electrolyte. The negative electrode includes: a negative electrode current collector; and a negative electrode active material layer adhering to the surface of the negative electrode current collector. The negative electrode active material layer includes: a carbon material capable of occluding and releasing lithium; and a silicon oxide expressed by SiO(where 0.5