▎ 摘　　要

NOVELTY - Lithium metal secondary battery cathode comprises graphene foam and composite metal lithium. USE - Lithium metal secondary battery cathode. ADVANTAGE - The battery cathode has reduced lithium affinity, spontaneous adsorption, porous structure, larger specific surface area and good flexibility, and can be confined into internal space, affect redistribution of electric field in battery, affect distribution of lithium ions into electrode surface, inhibit dendrite formation, and improve Coulombs efficiency of lithium anode. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the lithium metal secondary battery cathode comprising subjecting graphene oxide aqueous solution into hydrothermal reduction to obtain graphene hydrogel, freezing and drying to obtain graphene foam; and mixing obtained graphene foam with liquid lithium metal to obtain product.