▎ 摘　　要

NOVELTY - A lithium supplement material comprises porous graphene doped with nitrogen, boron, sulfur, fluorine, iron, copper, cobalt, nickel and/or zinc, as catalyst, and an organic lithium salt. USE - Lithium supplement material is used in composite positive electrode used in preparation of lithium ion batteries (claimed). ADVANTAGE - The lithium supplement material reduces the decomposition potential of the organic lithium salt, has high lithium supplementing capacity, and improves the cycle performance of the battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: preparation of the lithium supplement material, which involves dissolving the doped porous graphene in an organic lithium salt aqueous solution, and recrystallizing in ethanol solution; and use of the lithium supplement material in preparation of lithium ion battery. The decomposition potential of the organic lithium salt is 4.3 V or less. Under the catalysis of the doped porous graphite, the organic lithium salt is decomposed.