LITHIUM SECONDARY BATTERY ELECTRODE, ITS MANUFACTURING METHOD, AND LITHIUM SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a lithium secondary electrode having high discharge capacity and superior charge/discharge cycle characteristics and to provide its manufacturing method. SOLUTION: This lithium secondary battery electrode is formed by stacking active material thin films 2 on a collector 1. This electrode is characterized in that the active material thin film 2 is composed of solid solution between silicone and copper, and formed by alternately repeatedly stacking a layer 2a whose copper atom density is relatively high on a relatively low layer 2b.