Fuel cell

A fuel cell comprising:

• a membrane electrode assembly comprising:
• a first electrode including an electrode catalyst layer, an intermediate layer, and a gas diffusion layer;
• a second electrode including an electrode catalyst layer, an intermediate layer, and a gas diffusion layer;
• and
• a solid polymer electrolyte membrane provided between the first electrode and the second electrode;
• and
• a first separator stacked on the membrane electrode assembly in a stacking direction, the first separator comprising:
• a first reactant gas channel through which a reactant gas is to flow in a space between the first separator and the membrane electrode assembly along a power generation surface of the membrane electrode assembly;
• a first reactant gas manifold through which the reactant gas is to flow in the stacking direction;
• and
• a first buffer portion located outside of a power generation region of the electrode catalyst layer of the first electrode, the first buffer portion connecting the first reactant gas channel to the first reactant gas manifold, the gas diffusion layer of the first electrode extending along a surface of the first separator to a first buffer region facing the first buffer portion, the intermediate layer of the first electrode covering a portion of the gas diffusion layer of the first electrode in the first buffer region.