NEGATIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERIES, SECONDARY BATTERY NEGATIVE ELECTRODE, SECONDARY BATTERY, BATTERY PACK, ELECTRIC MOTOR VEHICLE, ELECTRIC POWER STORAGE SYSTEM, ELECTRIC MOTOR-DRIVEN TOOL, AND ELECTRONIC DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a secondary battery having superior battery characteristics.SOLUTION: A secondary battery comprises: a positive electrode; a negative electrode; and an electrolyte. The negative electrode includes: a negative electrode collector; and a negative electrode active material layer provided on the negative electrode collector and including a negative electrode active material with its surface covered with at least one coat film including at least one of a polyvinylidene fluoride and copolymers thereof.SELECTED DRAWING: Figure 1