Roll-to-roll fabrication of high performance fuel cell electrode with core-shell catalyst using seeded electrodes
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United States of America Patent
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Jan 9, 2018
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app pub date -
Jun 10, 2015
filing date -
Jun 10, 2015
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Abstract
A method for forming a fuel cell catalyst includes a step of forming an ionomer-containing layer including carbon particles and an ionomer. Tungsten-nickel alloy particles are formed on the carbon particles. At least a portion of the nickel in the tungsten-nickel alloy particles is replaced with palladium to form palladium-coated particles. The palladium-coated particles include a palladium shell covering the tungsten-nickel alloy particles. The palladium-coated particles are coated with platinum to form an electrode layer including core shell catalysts distributed therein.
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