▎ 摘　　要

NOVELTY - Organic/silicon composite material includes organic matter and silicon, and the mass ratio of the organic matter and silicon is 0.5-10:100. The organic matter contains a conjugated carbonyl structure. USE - Organic matter/silicon composite material is useful for preparing lithium ion battery cathode (Claimed). ADVANTAGE - The organic matter/silicon composite material has excellent elasticity and flexibility; it can relieve the volume expansion problem of silicon, prolong the cycle life of the electrode; organic matter containing conjugated carbonyl structure, further improving the circulation stability of the electrode; organic matter has excellent lithium-conducting ability, which can improve the power density of the silicon cathode. The organic matter/silicon composite material has a specific capacity of 248 milliampere hour/g, after circulating for 100 circles at 0.2 coulomb, it still has a specific capacity of 256 milliampere hour/g. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a battery cathode comprising the organic matter/silicon composite material, and further comprises a conductive agent and a binder, where mass ratio of the organic/silicon composite material, conductive agent and binder is 5-9:1-4:1-2; and (2) a method for preparing a battery cathode, which involves mixing the organic matter/silicon composite material, conductive agent, binder and dispersant to obtain electrode slurry; and coating electrode slurry on the copper current collector to obtain the battery cathode.