▎ 摘　　要

NOVELTY - Graphene/cobalt-based complex lithium battery cathode material is prepared by adding cobalt salt solution to graphene oxide dispersion, mixing uniformly, adding triethylenediamine solution, mixing uniformly, performing hydrothermal reaction, washing by centrifugation and drying. USE - The method is preparation of graphene/cobalt-based complex lithium battery cathode material (claimed). ADVANTAGE - The preparation method is simple and safe, low cost and suitable for industrial production. The prepared cathode material provides excellent lithium battery performance.