▎ 摘　　要

NOVELTY - A graphene foam-protected selenium cathode layer producing method involves providing a layer of solid graphene foam having pores or cells and pore walls containing graphene sheets and having a physical density of 0.001-1.5 g/cm3, and infiltrating or impregnating selenium into pores to obtain the finished product, where the graphene sheets comprises pristine graphene or non-pristine graphene material, the content of non-carbon elements greater than 2 wt.% selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated grapheme and chemically functionalized graphene. USE - Method for producing graphene foam-protected selenium cathode layer.