▎ 摘　　要

NOVELTY - Method for reinforcing graphene fiber non-woven fabric, involves (1) immersing graphene fiber non-woven fabric with carbon-oxygen ratio greater than 1 into the reinforcing medium, loading the surface of the graphene fiber in the non-woven fabric with the reinforcing medium and the reinforcing solution is a melt of a carbonizable precursor or a dispersion of carbonizable precursor, (2) transferring the graphene fiber non-woven fabric loaded with reinforcing medium to a high-temperature furnace, raising the temperature to the carbonization temperature of the reinforcing medium for carbonization treatment and (3) raising the temperature to the graphitization temperature for graphitization treatment. USE - Method for reinforcing graphene fiber non-woven fabric used as fuel cell gas diffusion layer used as a fuel cell gas diffusion layer or other electrochemical electrode materials (all claimed). ADVANTAGE - The continuous preparation method combines the blowing method to realize the continuous preparation of the non-woven fabric and continuous reinforcement. The method has a simple process, high efficiency and environmental protection and is a new method for preparing carbon-carbon composite materials. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) graphene fiber non-woven fabric; and (2) continuous preparation method of high-performance graphene non-woven fabric, which involves (S1) performing air-assisted spinning with the mixed solution of graphene oxide/sodium polyacrylate as the precursor, collecting the graphene oxide/sodium polyacrylate gel fiber on a rollable substrate and drying and separating the graphite oxide from the base to ene/sodium polyacrylate non-woven fabric, introducing the separated graphene oxide/sodium polyacrylate non-woven fabric into the reinforcing medium to support the reinforcing medium and collecting by a collecting roller, in the graphene oxide/sodium polyacrylate mixed solution, the mass fraction of graphene oxide is 0.2-1.5% and the mass fraction of sodium polyacrylate accounts for the graphene oxide is 25-50% of the total mass of sodium polyacrylate and sodium polyacrylate, and the weight average molecular weight of sodium polyacrylate is 1-35 millions, infiltrating the substrate with a coagulation liquid, and selecting the coagulation liquid from graphene oxide poor solvents, (S2) transferrin the graphene fiber non-woven fabric loaded with reinforcing medium to a high-temperature furnace, and heating up to the carbonization temperature of the reinforcing medium for carbonization treatment and (S3) raising the temperature to the graphitization temperature for graphitization treatment to obtain a reinforced graphene fiber non-woven fabric.