US 12,272,827 B2
Catalyst for fuel cell, method for manufacturing same, and membrane-electrode assembly comprising same
Jung Ho Kim, Seoul (KR)
Assigned to KOLON INDUSTRIES, INC., Seoul (KR)
Appl. No. 17/625,806
Filed by KOLON INDUSTRIES, INC., Seoul (KR)
PCT Filed Dec. 23, 2020, PCT No. PCT/KR2020/018964
§ 371(c)(1), (2) Date Jan. 10, 2022,
PCT Pub. No. WO2021/137514, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 10-2019-0178837 (KR), filed on Dec. 31, 2019.
Prior Publication US 2022/0263099 A1, Aug. 18, 2022
Int. Cl. H01M 4/92 (2006.01); H01M 4/86 (2006.01); H01M 8/1018 (2016.01); H01M 8/10 (2016.01)
CPC H01M 4/921 (2013.01) [H01M 4/8657 (2013.01); H01M 4/925 (2013.01); H01M 4/926 (2013.01); H01M 8/1018 (2013.01); H01M 2008/1095 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A catalyst for a fuel cell comprising:
a support; and
a PtCo alloy particle supported on the support,
wherein the PtCo alloy particle comprises (i) a transition metal-doped or transition metal-partially alloyed internal region including at least one transition metal selected from the group consisting of V, Cr, Mn, Fe, Ni, Cu, W, and Mo and (ii) a transition metal-free internal region where the transition metal does not exist, and
wherein the transition metal-free internal region is farther away from an exposed surface of the PtCo alloy particle than the transition metal-doped or transition metal-partially alloyed internal region.