▎ 摘　　要

NOVELTY - A negative electrode composite active material is obtained by synthesizing molybdenum disulfide and graphene nanosheets in the form of composite. USE - Negative electrode composite active material used for sodium-sulfur battery, redox flow battery and lithium-ion battery for mobile, automobile and energy storage system. ADVANTAGE - The composite active material provides negative electrode having suppressed volume change caused by decomposition of molybdenum and sulfur. The lithium-ion battery provided with the negative electrode has high power characteristics, excellent stability due to suppressed generation of short circuit of electrode, and durability, improved output characteristics, low self discharge, and suppressed rapid reduction in capacity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of the negative electrode composite active material.