▎ 摘　　要

NOVELTY - Producing vertical graphene composite carbon felt comprises (i) soaking carbon felt in acid solution and vibrating, (ii) repeatedly washing the soaked carbon felt with deionized water, and drying, (iii) placing the carbon felt on the roller device in chemical vapor deposition vacuum cavity, connecting positive and negative poles of electrode plate to two ends of starting preparation position of carbon felt, (iv) vacuumizing the vacuum cavity and starting the power supply, adjusting voltage current, electrifying and heating carbon felt, (v) mixing hydrogen gas (H2) and methane gas (CH4), and introducing into vacuum chamber, (vi) keeping, cutting off, and stopping ventilation; (vii) moving carbon felt to new preparation point ; and repeating the step (v) to the step (vii), until the vertical graphene composite carbon felt is completely prepared; and (viii) after the temperature is reduced to room temperature, closing the vacuum pumping system and opening the vacuum cavity. USE - Method for industrial mass production of vertical graphene composite carbon felt used in fuel cell energy storage system, water purifying treatment system, and vanadium battery. ADVANTAGE - The graphene layer sheet in the composite carbon felt can better increase carbon felt surface area of the surface, for electrochemical catalysis can further improve the conductivity and catalytic efficiency of the carbon felt Joule effect heating method of the method heating speed is fast, there is no external heating source high temperature evaporation and other pollution condition, the obtained graphene purity is higher. The method does not use plasma generating device, low device cost, simple preparation technique, easy to obtain raw material, no toxicity, excellent cost and simple operation, the roll-to-roll mode can be continuously prepared in large area, very suitable for industrial large-scale commercial production. DETAILED DESCRIPTION - Producing vertical graphene composite carbon felt comprises (i) soaking carbon felt in an acid solution and vibrating, (ii) repeatedly washing the soaked carbon felt with deionized water, and drying, (iii) placing the carbon felt on the roller device in the chemical vapor deposition vacuum cavity, connecting the positive and negative poles of the electrode plate to the two ends of the starting preparation position of carbon felt, or connecting the electrode plates of the two electrode plates to the starting position of the carbon feeling or the electrode board of the positive or negative poles to both ends of starting the preparation position, or placing the device of carbon felt in the carbon vapor deposition cavity, (iv) vacuumizing the vacuum cavity and starting the power supply, adjusting the voltage current, electrifying and heating carbon felt to maintain heat, (v) mixing H2 and CH4, introducing into the vacuum chamber, and maintaining the air pressure within a certain range, (vi) keeping for a period of time, cutting off, and stopping ventilation; (vii) moving the carbon felt to the new preparation point through the roller; and repeating the step (v) to the step (vii), until the vertical graphene composite carbon felt is completely prepared; and (viii) after the temperature is reduced to room temperature, closing the vacuum pumping system, and opening the vacuum cavity.