| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell capable of controlling the degradation of efficiency of power generation. <P>SOLUTION: An electrode structure 15 held by frames 13, 14 is formed of a solid electrolyte film 16, and electrode catalyst layers 17, 18, first and second gas passage forming bodies 21, 22 are respectively joined to the surfaces of the electrode catalyst layers 17, 18, and separators 23, 24 are joined to the surfaces of the first and the second gas passage forming bodies 21, 22. An upstream side of a fuel gas passage T of the first gas passage forming member 21 is set up to be a high pressure-loss passage Th, and a midstream side and a downstream side of the fuel gas passage T are set up to be a low pressure-loss passage Ll. Alternatively, an upstream side and a midstream side of an oxidizing gas passage F of the second gas passage forming member 22 are set up to be a low pressure-loss passage Fl, and a downstream side of the oxidizing gas passage F is set up to be a high pressure-loss passage Fh. The solid electrolyte film 16 is set up to be in a wet condition by properly moving generated water generated at an oxidizing gas passage F side to a fuel gas passage T side while a pressure difference between the pressure of oxidizing gas and the pressure of fuel gas is enlarged, and movements of electrons from a cathode side to an anode side in power generation are properly performed. <P>COPYRIGHT: (C)2011,JPO&INPIT |
