Fuel cell including fluid-permeable members of differing thermal resistances with respect to an electrolytic membrane

A fuel cell comprising:

• a membrane-electrode assembly including an anode, a cathode, and an electrolytic membrane;
• passageways provided on both sides of the membrane-electrode assembly;
• and
• fluid-permeable members provided between the membrane-electrode assembly and the passageways,
• wherein a thermal resistance of a fluid-permeable member on an anode side is lower than a thermal resistance of a fluid-permeable member on a cathode side, based on a condition of at least one of a material, a material quality, and a thickness of the fluid-permeable members,
• wherein one of the fluid-permeable member on the anode side and the fluid-permeable member on the cathode side is a first fluid-permeable member and includes a first water-repellant layer disposed on the membrane-electrode assembly and a first gas diffusion layer adjacent to and between the first water-repellant layer and one of the passageways, the first water-repellant layer being made of polytetrafluoroethylene (PTFE) including carbon, the first gas diffusion layer being made of a carbon paper or a carbon cloth,
• wherein a thermal resistance of the electrolytic membrane is smaller than a thermal resistance differential between the fluid-permeable members, based on a condition of at least one of a material, a material quality, and a thickness of the fluid-permeable members and the electrolytic membrane.