US 12,244,021 B2
Fuel cell catalyst, manufacturing method therefor, and membrane-electrode assembly including same
Jun Young Kim, Seoul (KR); Nak-Won Kong, Seoul (KR); Kah-Young Song, Seoul (KR); Hee-Tak Kim, Daejeon (KR); and Dong Wook Lee, Daejeon (KR)
Assigned to KOLON INDUSTRIES, INC., Seoul (KR); and KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, Daejeon (KR)
Appl. No. 17/614,372
Filed by KOLON INDUSTRIES, INC., Seoul (KR); and KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, Daejeon (KR)
PCT Filed Jun. 26, 2020, PCT No. PCT/KR2020/008323
§ 371(c)(1), (2) Date Nov. 26, 2021,
PCT Pub. No. WO2020/263004, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 10-2019-0078272 (KR), filed on Jun. 28, 2019.
Prior Publication US 2022/0231303 A1, Jul. 21, 2022
Int. Cl. H01M 4/86 (2006.01); H01M 4/92 (2006.01); H01M 8/1004 (2016.01)
CPC H01M 4/8657 (2013.01) [H01M 4/8663 (2013.01); H01M 4/926 (2013.01); H01M 8/1004 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A catalyst for a fuel cell, the catalyst comprising:
a nanoparticle containing platinum; and
a protective layer selectively coated only on a portion of a surface of the nanoparticle, the protective layer being configured to interact with the nanoparticle so as to inhibit oxidation of the platinum,
wherein the portion of the surface of the nanoparticle selectively coated with the protective layer comprises a low-coordinated site, and
wherein only the low-coordinated site of the nanoparticle is coated with the protective laver.