ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND THE LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide an electrode for lithium secondary battery, having a large discharge capacity and superior charging and discharging cycle characteristics. SOLUTION: In this electrode for lithium secondary battery, an active material film formed mainly of a metal alloyed with Li is stackingly formed on a substrate formed of a metal which is not alloyed with Li. The value of (surface roughness Ra of active material film)-(surface roughness Ra of substrate) is 0.1 μm or larger.