LITHIUM SECONDARY BATTERY AND ELECTRIC DOUBLELAYER CAPACITOR

摘要

PROBLEM TO BE SOLVED: To provide an element of low internal resistance and a high rate by preventing generation of passive state film on a collector surface of a lithium secondary battery and an electric double-layer capacitor. SOLUTION: Application of fine grain carbon of particle size 0.8 μm or less on the collector surface prevents generation of a passive state film.