Durable hybrid electrocatalysts for fuel cells
AssigneeThe Hong Kong University of Science and Technology
InventorsMinhua SHAO, Fei XIAO
Life of this patent
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Abstract
Electrocatalysts and methods of forming the same are provided. A hybrid electrocatalyst can be a combination of a platinum (Pt)-based catalyst and a carbon-based non-precious-metal catalyst using a single atom approach. A fuel cell electrocatalyst can include a nitrogen-doped carbon support and a plurality of atoms of both Pt and of a non-precious-metal catalyst dispersed in the support. The dispersed atoms can be isolated from each other within the support.
Claims27
A fuel cell electrocatalyst, comprising:
- a support comprising carbon;
- a plurality of atoms of a first catalyst uniformly dispersed in a framework of the support such that each atom of the first catalyst within the framework is isolated from each other atom of the first catalyst within the framework;
- and
- a plurality of atoms of a second catalyst uniformly dispersed in the framework of the support such that each atom of the second catalyst within the framework is isolated from each other atom of the second catalyst within the framework,
- wherein the first catalyst is a non-precious metal, and
- wherein the second catalyst is a precious metal.
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A method of forming a fuel cell electrocatalyst, the method comprising:
- forming a porous support comprising carbon and a first catalyst;
- and
- introducing a second catalyst to the porous support to form the fuel cell electrocatalyst, such that a plurality of atoms of the second catalyst are uniformly dispersed in a framework of the support such that each atom of the second catalyst within the framework is isolated from each other atom of the second catalyst within the framework,
- wherein the first catalyst is a non-precious metal, and
- wherein the second catalyst is a precious metal.
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Dependencies are inferred from the claim text.