▎ 摘　　要

NOVELTY - Preparing cathode of lithium battery involves providing lithium carbide particles, mixing the lithiumcarbide particles with graphene in the agent solution to obtain a mixed solution, coating the mixed solution on the metal sheet to form a coating layer, and coating lithium battery cathode material on the coating layer to obtain the lithium battery. USE - The method is used for preparing cathode of lithium battery e.g. lithium iron phosphate battery. ADVANTAGE - The lithium battery cathode in the process of charging, because of a large amount of electrons, the lithium carbide in the coating is easy to split into carbon and lithium ion, so as to effectively supplement the loss of part of lithium ion due to crystallization, so that the lithium ion battery can keep a higher electric quantity level for a longer time. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) lithium battery cathode; and (2) a lithium battery.