US 12,407,001 B2
Fuel cell catalyst, method for preparing the same, and fuel cell comprising the same
Eun Young You, Yongin-si (KR); Yun Sik Kang, Seongnam-si (KR); Dae Jong You, Hwaseong-si (KR); Sung Chul Lee, Yongin-si (KR); Sung Jong Yoo, Seoul (KR); Se Hyun Lee, Seoul (KR); Jue Hyuk Jang, Seoul (KR); and Eung Jun Lee, Seoul (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); Kia Corporation, Seoul (KR); and KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); Kia Corporation, Seoul (KR); and KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, Seoul (KR)
Filed on Aug. 25, 2022, as Appl. No. 17/895,639.
Claims priority of application No. 10-2021-0114866 (KR), filed on Aug. 30, 2021.
Prior Publication US 2023/0077033 A1, Mar. 9, 2023
Int. Cl. H01M 4/92 (2006.01); H01M 4/88 (2006.01)
CPC H01M 4/925 (2013.01) [H01M 4/8882 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A fuel cell catalyst comprising:
a conductive carrier; and
core-shell nanoparticles supported on the carrier,
wherein the core includes platinum and a transition metal,
the shell includes a secondary metal,
an electrochemical specific activity measured at a voltage of 0.05 V to 1.05 V (vs. RHE) in a potential range, at a scan rate of 5 mV/s and a rotation rate of 1,600 rpm in an O2-saturated 0.1 M HClO4 electrolyte solution is 0.3 mA/cm2 to 0.6 mA/cm2, and
a mass activity is 0.05 mA/μg to 0.08 mA/μg.