The carbon fiber is compounded, solidified, carbonized, and graphitized to obtain porous carbon fiber paper (cloth). On the proton exchange membrane hydrogen fuel cell, as the support carrier of the catalyst layer, the fuel gas passes through the anode diffusion layer to reach the catalyst layer, and the electrode reaction occurs under the action of the catalyst. Carbon fiber paper collects electric current, conducts gas and discharges the reaction product water, and provides multiple functions such as gas channel, electronic channel and drainage channel for the reaction of membrane electrode.

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