▎ 摘　　要

NOVELTY - Mesoporous carbon-coated silicon cathode material comprises 4-6 pts. wt. carbon precursor solution, 3-6 pts. wt. template agent, 4-5 pts. wt. pore-forming agent, 20-25 pts. wt. nano silicon powder, 50-70 pts. wt. polar electrolyte, 5-7 pts. wt. fumed silica powder and hydrofluoric acid solution (remaining amount). USE - The material is useuful in product in battery lithium (claimed). ADVANTAGE - The material: exhibits high reversible capacity in battery tests; has excellent rate performance and high cycle stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing mesoporous carbon-coated silicon cathode material, comprising (i) taking carbon precursor solution, template agent, pore forming agent, nano silicon powder, polar electrolyte, fumed silica powder and hydrofluoric acid solution, (ii) adding nano-silica powder in the stirring vessel, then adding fumed silica powder, then adding the polar electrolyte, then stirring through the stirring vessel, fully mixing and reacting to obtain nano-silicon material whose surface is coated with mesoporous silicon, (iii) adding the carbon precursor solution into the stirring container, then adding the template agent, then adding the pore-forming agent, then stirring through the stirring container, fully mixing and reacting to obtain mesoporous carbon precursor, using nano-silicon material coated with mesoporous silicon as a template, adding mesoporous carbon precursor, and carbonizing to obtain mesoporous carbon-coated silicon composite, and (iv) washing mesoporous carbon-coated silicon composite in hydrofluoric acid solution, removing the mesoporous silicon and silicon oxide, and then placing in a drying oven for drying to obtain mesoporous carbon-coated silicon cathode material.