▎ 摘　　要

NOVELTY - The assembly (100) comprises a proton exchange membrane (102) and an electrode located on the proton exchange membrane. The electrode comprises a carbon fiber film comprising a carbon nanotube film comprising multiple carbon nanotubes joined end to end and extending along a same direction, where each of the multiple carbon nanotubes is joined with multiple graphene sheets. An angle is defined between a lengthwise direction of each of the multiple graphene sheets and the multiple carbon nanotubes. USE - Membrane electrode assembly (MEA) of fuel cell, such as, alkaline, solid oxide, and proton exchange membrane fuel cells. ADVANTAGE - The carbon fiber paper has high electrical resistance, thus restricting the transfer of electrons between the gas diffusion layer and the external electrical circuit, thus reducing the reaction activity of the MEA. Stacking the carbon nanotube films improves the mechanical strength of the carbon fiber film. The free-standing carbon nanotube film sustains the weight of itself when it is hoisted by a portion thereof without any significant damage to its structural integrity. The carbon particles have the properties of high conductivity, a high specific surface area and good corrosion resistance. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a membrane electrode assembly of a fuel cell. Membrane electrode assembly (100) Proton exchange membrane (102) Gas diffusion layer (106) Catalyst layer (108) First surface (1022)