| 摘要 |
A fuel cell (100) capable of improving durability is provided. The fuel cell includes an electrolyte membrane (1), catalyst layers (2a, 2b) stacked on both sides of the electrolyte membrane (1), respectively, and diffusion layers (3a, 3b) stacked outside of the respective catalyst layers (2a, 2b). A stacked surface of each of the catalyst layers (2a, 2b) is smaller than a stacked surface of the electrolyte membrane (1), and a stacked surface of each of the diffusion layers (3a, 3b) is larger than the stacked surface of each of the catalyst layers (2a, 2b) and smaller than the stacked surface of the electrolyte membrane (1). If a surface of the electrolyte membrane (1) which surface is to contact with one of the catalyst layers (2a, 2b) is A1 and a surface of the electrolyte membrane (1) which surface is out of contact with one of the catalyst layers (2a, 2b) and on which a space is formed between the electrolyte membrane (1) and one of the diffusion layer is A2, the surface A2 contains a single metal element having a hydrogen-peroxide decomposing performance and/or a compound containing the single metal element.
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