▎ 摘　　要

NOVELTY - Composite cathode material comprises black phosphorus material, stabilizer and carbon material; at least a part of the stabilizer is distributed on the surface of the black phosphorus material, the stabilizer is a material capable of interacting with the black phosphorus material to form a chemical bond whose bond energy is greater than phosphorus-carbon bond, and the band gap of the stabilizer is less than 3eV, and the lithium ion diffusion coefficient is greater than 10-12 cm2/s. USE - The composite cathode material is useful for cathode sheet of secondary battery in electronic device (all claimed). ADVANTAGE - The composite cathode material has good electronic and ionic conductivity and capable of forming strong chemical bonds with black phosphorus, effectively reduces the problem of easy collapse of the conductive network caused by the expansion of black phosphorus materials and slow down the failure of side reactions of black phosphorus charge and discharge products, and improves the circulation stability of black phosphorus material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for cathode sheet.