Importance

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Abstract

A fuel cell is provided, in which the generation of hydrogen, which is one cause of degradation of the cell characteristics, is controlled, thus preventing the degradation of the electrolyte member and maintaining stable cell characteristics for a long time. The fuel cell has a fuel pole, an oxidizer pole opposed to the fuel pole, and an electrolyte member arranged between the fuel pole and the oxidizer pole and having ion conductivity. The electrolyte member comprises three layers, i.e., a first electrolyte layer and two second electrolyte layers. The first electrolyte layer is interposed between the second electrolyte layers. The second electrolyte layer contacts the fuel pole and the oxidizer pole and is a layer that prevents the passage of oxygen from the oxidizer pole to the fuel pole. The second electrolyte layer contains catalyst.

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First Claim