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US 12,126,029 B2Granted
Catalyst and method of preparing same
AssigneesHyundai Motor Company, Kia Motors Corporation, Daegu Gyeongbuk Institute of Science and Technology
InventorsEun Jik Lee, Jee Youn Hwang, Ji Hoon Jang, Ha Young Lee, Jong Sung Yu
Life of this patent
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Abstract
An electrode catalyst is configured such that non-noble metal particles, noble metal particles or nitride-doped noble metal particles are supported on a carbon support, wherein the carbon support has a 2D planar crystal structure or a 3D polyhedral crystal structure and is doped with nitrogen, thereby exhibiting increased catalytic activity.
Claims8
A method of preparing a catalyst, the method comprising:
- preparing a support by synthesizing a metal precursor and alkyl imidazole;
- adding the support and cobalt nitrate to a solvent and carrying out a hydrothermal reaction;
- preparing a carbon support by subjecting the support to primary heat treatment;
- adding the carbon support to a solvent along with platinum and subjecting the carbon support to secondary heat treatment for supporting platinum with doped-nitrogen on the surface of the carbon support;
- purifying the carbon support by removing one or more pure non-noble metal particles from the carbon support and remaining non-noble metal particles attached on the platinum particles through acid treatment;
- and
- subjecting the carbon support to tertiary heat treatment,
- wherein the synthesizing comprises:
- supplying a first aqueous solution of dissolved the metal precursor, and mixing it with a second aqueous solution of the alkyl imidazole with stirring,
- wherein the one or more metal particles comprise non-noble metal particles which is formed by primary heat treatment.
7 more elements
Dependencies are inferred from the claim text.