Patent ID: 8568939
Filing Date: 2013-10-29
Classification: H01M,Y02E

Abstract:
1. 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.