▎ 摘　　要

NOVELTY - Preparing cobalt phosphide material involves reacting the cobalt glycerate with 0.1-1.5mol/L phytic acid solution in the organic solution for 5-60 min, then processing to obtain the pink solid, calcining for 0.5-3 hours in the argon-hydrogen atmosphere to obtain the product, the adding amount ratio of the cobalt glycerate and 0.1-1.5mol/L phytic acid solution is 0.1g:(8.5-10.5)ml. USE - Method for preparing cobalt phosphide material, which is used in lithium-ion battery (claimed). ADVANTAGE - The method is simple, the condition is mild, effectively reduces the generation of toxic gas, and reduces the air pollution, has excellent conductivity, specific capacity, multiplying power performance and cycle performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a method for preparing cobalt phosphide composite material which involves: i. reacting the cobalt glycerate with 0.1-1.5mol/L phytic acid solution in the organic solution for 5-60 min, then processing to obtain the pink solid; ii. reacting pink solid and graphene oxide dispersion completely in the organic solvent; iii. calcining for 0.5-3 hours to obtain the cobalt phosphide composite material, the adding amount ratio of the cobalt glycerate and 0.1-1.5mol/L phytic acid solution is 0.1g:(8.5-10.5 ml); and (2) use of the cobalt phosphide material and the cobalt phosphide composite material in lithium-ion battery.