▎ 摘　　要

NOVELTY - A silicon-based flexible self-supporting electrode comprises laminated conductive fiber layer and silicon-based composite particle layer. The silicon-based composite particle layer comprises silicon-based particle and conductive agent. The bottom layer of the silicon-based flexible self-supporting electrode is conductive fiber layer. USE - Silicon-based flexible self-supporting electrode used as negative electrode for lithium ion battery used in battery module in battery pack as power source or energy storage unit for electrical device (all claimed). ADVANTAGE - The self-supporting electrode has excellent flexibility and high energy density. The design of the silicon-based composite particle layer makes the self-supporting electrode have higher silicon content. In the silicon-based composite particle layer, the conductive agent is coated on surface of the silicon-based particle, which improves the conductivity of the silicon-based particles, reduces the direct contact of the electrolyte and the silicon-based particles, and reduces side reactions. The conductive fiber layer can contain the volume expansion of silicon-based particles in the circulation process. The alternately laminated structure can relieve the problem of active material falling caused by expansion of the silicon-based particles. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of silicon-based flexible self-supporting electrode.