▎ 摘　　要

NOVELTY - Cathode material comprises phosphorus material and carbon material, which are mixed at an appropriate mass ratio to prepare phosphorus-carbon composite material, and used as lithium-ion battery or sodium-ion battery cathode material.The material has high specific capacity and good flame retardant effect on electrolyte. USE - Cathode material of battery with high safety and high performance for use in secondary battery for electric automobile to avoid safety accidents such as vehicle combustion and explosion. ADVANTAGE - The battery cathode material has excellent electrochemical performance and flame retardant performance when used as electrode material, greatly improves the safety of the energy storage battery, does not need to add flame retardants in the battery material, has good flame-retardant effect, has high performance, and has development and utilization high safety. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing phosphorus-carbon composite material, which involves performing low-temperature photocatalysis, ball milling, ultrasonic treatment, electrochemical stripping, electrophoretic deposition, plasma sintering, solvent thermal method, chemical vapor transport method, and flash heat treatment.