▎ 摘　　要

NOVELTY - A negative electrode composite material comprises silicon-solid electrolyte composite material comprising active silicon particles and a solid electrolyte. The silicon-solid electrolyte composite material being coated or partially coated with carbon. USE - Composite material used for negative electrode used in silicon-containing lithium-ion battery used in electronic device (all claimed). ADVANTAGE - The negative electrode composite material has rapid ion conduction, long cycle characteristics, low expansion, and high ion conduction rate. DETAILED DESCRIPTION - AN INDEPENDENT CLAIM is included for a negative electrode.