Method of preparing a catalyst for a fuel cell without a carbon support
AssigneesHyundai Motor Company, Kia Motors Corporation, Research & Business Foundation Sungkyunkwan University
InventorsJu Ahn Park, Sung Ho Park
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Abstract
A method of preparing a catalyst for a fuel cell includes no carbon support. The method of preparing a catalyst for a fuel cell includes preparing a first metal nanoparticle having a polyhedral shape, growing a second metal along the edge of the first metal nanoparticle, and removing the first metal nanoparticle.
Claims18
A method of preparing a catalyst for a fuel cell, the method comprising:
- preparing a first metal nanoparticle;
- growing a second metal along an edge of the first metal nanoparticle;
- and
- removing the first metal nanoparticle,
- wherein the growing the second metal comprises precipitating a trace of a third metal on a surface of the first metal nanoparticle and replacing the third metal precipitated on the edge of the first metal nanoparticle with the second metal.
A method of preparing a catalyst layer for a fuel cell, the method comprising:
- preparing a catalyst for a fuel cell by preparing a first metal nanoparticle, growing a second metal along an edge of the first metal nanoparticle, and removing the first metal nanoparticle;
- dropping a droplet comprising the catalyst onto a substrate;
- and
- evaporating the droplet,
- wherein the catalyst is self-assembled as the droplet is evaporated.
A method of preparing a catalyst layer for a fuel cell, the method comprising:
- preparing a catalyst for a fuel cell by preparing a first metal nanoparticle, growing a second metal along an edge of the first metal nanoparticle, and removing the first metal nanoparticle;
- dropping a droplet comprising the catalyst onto a substrate;
- and
- evaporating the droplet,
- wherein the catalyst layer has a thickness of 2 μm to 12 μm.
Dependencies are inferred from the claim text.