| 摘要 |
A fuel cell capable of downsizing the battery with a simple structure is provided. Between a battery body and a fuel tank, a fuel diffusion layer in which the surface on the battery body side is a porous oxide film is provided. Further, a liquid fuel supplied from the fuel tank to the fuel diffusion layer is diffused in the porous oxide film. By capillary phenomenon due to minute holes, the liquid fuel is uniformly diffused to a wide range and then vaporized, and the vaporized fuel is supplied to respective battery cells 5A to 5C in the battery body. On the surface of the fuel diffusion layer on the battery body side, a groove section is provided radially from a fuel supply position toward the peripheral section of the fuel diffusion section. Thereby, the liquid fuel is moved in the groove section by using the capillary phenomenon irrespective of the direction of gravity, the influence of gravity according to posture difference is prevented, and the liquid fuel is uniformly supplied to the respective power generation sections.
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