MEMBRANE ELECTRODE ASSEMBLY AND FUEL CELL

There is provided a membrane electrode assembly (50) including an anode gas diffusion layer (28) included in an anode (22) and a cathode gas diffusion layer (32) included in a cathode (24), wherein the anode gas diffusion layer (28) includes an anode gas diffusion substrate (27) and an anode microporous layer (29) disposed on a first surface of the anode gas diffusion substrate (27), wherein the cathode gas diffusion layer (32) includes a cathode gas diffusion substrate (31) and a cathode microporous layer (33) disposed on a first surface of the cathode gas diffusion substrate (31), and wherein at least one of a strike-through ratio on a second surface of the anode gas diffusion substrate (27) and a strike-through ratio on a second surface of the cathode gas diffusion substrate (31) is larger than 0.2%.