▎ 摘　　要

NOVELTY - Reduced graphene oxide/graphite-type phase carbon nitride composite non-woven fabric, comprises reduced graphene oxide/graphite-type carbon nitride composite fibers and reduced graphene oxide fibers overlapping each other to form a multilayer structure; where the volume ratio of the reduced graphene oxide fiber to the reduced graphene oxide/graphite-type phase carbon nitride composite fiber is (2:1)-(1:1); and the diameter of the fiber is in the range of 30-70 µm. USE - The non-woven fabric is used as a three-dimensional framework in the cathode of lithium metal batteries (claimed). ADVANTAGE - The non-woven fabric has high single-layer rate, smaller oxidation degree and larger sheet diameter of the fiber toughness, and has good mechanical property of the oxidation graphene the fiber. DETAILED DESCRIPTION - AN INDEPENDENT CLAIM is also included for: preparation method of the composite non-woven fabric of reducing and graphene-type carbon nitride.