| 摘要 |
A method is provided for fabricating a fuel cell wherein corrosion of metal diffusion layers or catalysts supports is avoided. The method comprises forming first and second electrical conductors ( 22, 42 ) accessible at a surface of a substrate ( 12 ). The substrate ( 12 ) is etched to provide a channel ( 34, 36 ), and a multi-metal layer ( 82 ) is deposited on the surface of the substrate ( 12 ). At least one metal is etched from the multi-metal layer ( 82 ) forming a porous metal layer therefrom. A portion of the porous metal layer is etched resulting in an anode portion ( 89 ) aligned with the channel ( 34, 36 ) and coupled to the first electrical conductor ( 22 ), and a cathode portion ( 90 ) coupled to the second electrical conductor ( 42 ) and separated from the anode portion by a cavity ( 91 ). A first bi-continuous material ( 97 ) is formed over the porous metal layer ( 82 ) within at least one of the anode ( 89 ) and oxidant ( 90 ) portions. An electrocatalyst ( 94 ) is formed over the bi-continous material ( 97 ), the cavity ( 91 ) is filled with an electrolyte; and the center anode portion ( 89 ) and the cavity ( 91 ) are covered with a capping layer ( 98 ).
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