▎ 摘　　要

NOVELTY - A component comprises graphene foam. USE - Component used in the form of sheet or film as flow field and gas diffusion layer in fuel cell e.g. polymer electrolyte membrane fuel cell (all claimed) used for converting chemical energy into electrical energy. ADVANTAGE - The component enhances mass transport and has excellent corrosion resistance even under operating conditions of the fuel cell. The component provides fuel with excellent performance even in high and low current density regions and durability. The graphene foam helps to decrease the activation loss at low current density regions in order to improve cell performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for fuel cell. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic views of a membrane electrode assembly comprising a flow field made of the compressed graphene foam and a membrane electrode assembly comprising the flow field made of compressed graphene foam with a gas diffusion layer.