▎ 摘　　要

NOVELTY - A lithium ion battery flexible cathode material is prepared by taking silicon nanoparticles, adding graphene oxide solution, stirring to obtain intermediate layer solution, taking graphene oxide solution as first layer and third layer solution, vacuum filtering, forming graphene oxide film, forming sandwich structure, soaking in hydroiodic acid, and reducing. USE - Method for preparing lithium ion battery flexible cathode material (claimed). ADVANTAGE - The method is simple and suitable for industrialization. The product has improved multiplying power performance and cycle performance.