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US 11,688,871 B2Granted
Electrode for membrane-electrode assembly, method of manufacturing same and membrane-electrode assembly using same
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsByeong Gab Ji, Su Won Seol, Dong Hwan Yoon, Kook Il Han, Yoon Hwan Cho
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Abstract
Disclosed are an electrode for a membrane-electrode assembly, a method of manufacturing the same and a membrane-electrode assembly using the same. The electrode may include the pores and pore density around a catalyst contained in the electrode may be selectively increased using a thermally decomposable chemical blowing agent, thereby improving mass transfer through the catalyst.
Claims18
A method of manufacturing an electrode for a membrane-electrode assembly, comprising:
- preparing a catalyst composite material comprising a catalyst, a blowing agent and a first ionomer;
- preparing a catalyst slurry comprising the catalyst composite material, a second ionomer, and a solvent;
- and
- applying the catalyst slurry on a substrate,
- wherein the catalyst composite material comprises the catalyst and a coating layer formed on all or part of a surface of the catalyst, and
- the coating layer comprises the first ionomer and the blowing agent.
3 more elements
Dependencies are inferred from the claim text.