▎ 摘　　要

NOVELTY - A negative electrode material comprises silicon-containing granules containing a silicon composite matrix and a polymer layer covering at least a portion of the matrix. The polymer layer contains a carbon material. USE - Material for negative electrode for electrochemical device e.g. lithium ion battery for electronic device (all claimed). Uses include but are not limited to laptops, mobile phones, tablet personal computers (PCs), mobile power supplies, drones, portable fax, e-book player, portable copier, portable printer, calculator, etc. ADVANTAGE - The material has excellent circulation performance, and provides battery having excellent magnification performance, cycle characteristics, swell resistance and low expansion rate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of the negative electrode material.