Non-noble metal based catalyst and method of manufacturing the same
AssigneesHyundai Motor Company, Kia Motors Corporation, Postech Academy-Industry Foundation
InventorsJu Hee Lee, Won Jung Kim, Seonggyu Lee, Jinwoo Lee
Life of this patent
Estimating the term…
Abstract
Embodiments of the present invention relate to non-noble metal-based catalysts used as electrode materials for fuel cells, and methods of manufacturing the same. In an aspect of the present inventions, provided herein is a non-noble metal-based catalyst for an electrode of a fuel cell. The non-noble metal-based catalyst comprise a porous carbon having a first pore and a second pore smaller than the first pore. The first pore has a pore size of about 5 to 100 nm and has an inner wall into which an active site of the non-noble metal-based catalyst is introduced.
Claims10
A method of manufacturing a non-noble metal-based catalyst for an electrode of a fuel cell, the method comprising:
- mixing a porous carbon with a non-noble metal-based catalyst precursor;
- heat-treating the mixture at a temperature of about 600 to 1200° C.;
- stirring the heat-treated mixture in an acidic solution;
- and
- washing and drying the stirred mixture, and wherein the porous carbon has a first pore and a second pore smaller than the first pore, and the first pore has an inner wall into which an active site of the non-noble metal-based catalyst is selectively introduced in the mixing of the porous carbon with the non-noble metal-based catalyst precursor, and wherein the active site of the non-noble metal-based catalyst is formed by a non-noble metal-based catalyst precursor, and the non-noble metal-based catalyst precursor has a diameter less than that of the first pores and greater than that of the second pores.
The method of claim , wherein the stirring of the heat-treated mixture in an acidic solution comprises adding the heat-treated mixture to an acidic solution having a concentration of about 0.1 M or greater and stirring the resultant mixture.
Dependencies are inferred from the claim text.