Electrocatalyst, Fuel Cell Cathode and Fuel Cell
First Claim
1. An electrode for a fuel cell, which comprises(a) a current collector;
- (b) an intrinsically electron-conducting adhesive on a surface of said current collector;
(c) an electrocatalyst that is bonded to the current collector by the said electron-conducting adhesive; and
(d) an ionomer layer in contact to the said electrocatalyst.
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Abstract
The present invention is related to fuel cells and fuel cell cathodes, especially for fuel cells using hydrogen peroxide, oxygen or air as oxidant. A supported electrocatalyst (204) or unsupported metal black catalyst (206) of cathodes according to an embodiment of the present invention is bonded to a current collector (200) by an intrinsically electron conducting adhesive (202). The surface of the electrocatalyst layer is coated by an ion-conducting ionomer layer (210). According to an embodiment of the invention these fuel cells use cathodes that employ ruthenium alloys RuMeIMeII such as ruthenium-palladium-iridium alloys or quaternary ruthenium-rhenium alloys RuMeIMeIIRe such as ruthenium-palladium-iridium-rhenium alloys as electrocatalyst (206) for hydrogen peroxide fuel cells. Other embodiments are described and shown.
94 Citations
21 Claims
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1. An electrode for a fuel cell, which comprises
(a) a current collector; -
(b) an intrinsically electron-conducting adhesive on a surface of said current collector; (c) an electrocatalyst that is bonded to the current collector by the said electron-conducting adhesive; and (d) an ionomer layer in contact to the said electrocatalyst. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An intrinsically electron-conducting adhesive for bonding electrocatalysts comprising:
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(a) at least one intrinsically electron-conducting polymer; (b) at least one dopant; and (c) at least one tackifier. - View Dependent Claims (14, 15, 16, 17)
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18. Fuel cell, comprising an anode, an electrolyte and a cathode comprising:
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(a) a current collector; (b) an electron-conducting adhesive on a surface of said current collector; (c) an electrocatalyst that is bonded to the current collector by the said electron-conducting adhesive; and (d) an ionomer layer in contact to the said electrocatalyst. - View Dependent Claims (19, 20, 21)
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Specification