▎ 摘　　要

NOVELTY - The utility model discloses a porous lithium metal composite material, which includes a substrate, and a porous layer group is respectively arranged on the upper and lower sides of the substrate; the porous layer group includes an inner layer and an outer layer, the inner layer is located between the substrate and the outer layer, a silicone oil layer is provided between the inner layer and the substrate; the inner layer is a first porous structure layer made of metal lithium, lithium and carbon, lithium and rare earth, lithium and graphite, or lithium and graphene; the outer layer is a second porous structure layer made of carbon, rare earth, graphite or graphene. The porous lithium metal composite material of the present invention is provided with a porous structure on a substrate, specifically, the porous structure is set as an inner layer and an outer layer, the outer layer can serve as a protective layer for the inner layer, in this way, the electrolyte can penetrate into the inner layer through the outer layer, which is conducive to the infiltration of the electrolyte, the metal negative electrode is fully utilized to achieve a high specific capacity electrode.