Patent ID: 8652567

Claim:
A method for producing carbon paper, the method comprising: 1) employing a polyacrylonitrile-based carbon fiber as a reinforcing material, a phenolic resin or epoxy resin as a bonding agent, molding and preparing the carbon fiber into a carbon fiber blank by a dry paper-making method, a thickness of the blank being 100-800 micrometers, and an area density thereof being 20-70 g/cm 3 ; 2) a process of resin hot pressing: using the phenolic resin as a bonding agent, drying, carbonizing, and graphitizing the carbon fiber blank, and preparing the carbon paper by a traditional hot-press method, wherein a mass fraction of the phenolic resin to the carbon paper is 20-70%; and 3) stacking and putting a product obtained in 1) into a reaction furnace for a deposition process, a pressure in the reaction furnace being from 1 kPa to 1 atmosphere, with methane, propene, or liquefied petroleum gas as a carbon source gas, nitrogen or argon gas as a diluent gas, a concentration of the carbon source gas being 5-100%; a gas flow rate being 0.1-5 L/min, a temperature in the reaction furnace being controlled at between 800° C. and 1100° C., and a time of the deposition process being 1-5 h.