Catalyst coated membrane (CCM) and catalyst film/layer for alkaline membrane fuel cells and methods of making same
First Claim
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1. A catalyst coated membrane (CCM) for use in an alkaline membrane fuel cell (AMFC) comprising:
- an anion conducting alkaline membrane; and
a catalyst layer applied adjacent the membrane, wherein the catalyst layer comprises;
(a) a metal nano-powder; and
(b) an ion conducting ionomer.
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Abstract
Alkaline membrane fuel cells designed with silver cathode catalysts include a catalyst layer comprising silver metal nano-particles and an anion-conducting ionomer. The silver nano-particles are mixed with a solution of the ionomer to form a catalyst ink that is applied to an alkaline membrane to form an ultra-thin cathode catalyst layer on the membrane surface.
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Citations
21 Claims
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1. A catalyst coated membrane (CCM) for use in an alkaline membrane fuel cell (AMFC) comprising:
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an anion conducting alkaline membrane; and a catalyst layer applied adjacent the membrane, wherein the catalyst layer comprises; (a) a metal nano-powder; and (b) an ion conducting ionomer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of making a catalyst coated membrane (CCM), composing the steps of:
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(a) providing a source of silver-containing nano-particles; (b) providing a source of hydroxide ion OH-conducting ionomer material; (c) adding the silver-containing nano-particles to a solution of the OH-ionomer material to form a catalyst ink; (d) applying the catalyst ink to a cathode side surface of an alkaline membrane; and (e) applying one or more of heat and pressure to catalyst ink and membrane to secure the ink to the membrane.
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20. A cathode catalyst layer for use in a catalyst coated membrane (CCM) in an alkaline membrane fuel cell (AMFC) comprising:
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(a) a metal nano-powder; and (b) an ion conduction ionomer. - View Dependent Claims (21)
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Specification