US 11,990,626 B2
Catalyst
Andrew J. L. Steinbach, Shoreview, MN (US); Andrew T. Haug, Woodbury, MN (US); Krzysztof A. Lewinski, Mahtomedi, MN (US); Amy E. Hester, Hudson, WI (US); Grant M. Thoma, Woodbury, MN (US); and Cedric Bedoya, Woodbury, MN (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 15/733,735
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Apr. 11, 2019, PCT No. PCT/IB2019/053006
§ 371(c)(1), (2) Date Oct. 9, 2020,
PCT Pub. No. WO2019/198033, PCT Pub. Date Oct. 17, 2019.
Claims priority of provisional application 62/657,184, filed on Apr. 13, 2018.
Prior Publication US 2021/0408555 A1, Dec. 30, 2021
Int. Cl. H01M 4/92 (2006.01); B01J 23/42 (2006.01); B01J 23/46 (2006.01); H01M 8/10 (2016.01)
CPC H01M 4/921 (2013.01) [H01M 2008/1095 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A catalyst comprising an Ir layer having an outer layer with a layer comprising Pt directly thereon, wherein the Ir layer has an average thickness in a range from 0.04 to 30 nanometers, wherein the layer comprising Pt has an average thickness in a range from 0.04 to 50 nanometers, wherein the average thickness of the catalyst is the sum of the average thickness of the Ir layer and the average thickness of the layer comprising Pt, wherein the Pt and Ir are present in an atomic ratio in a range from 0.01:1 to 10:1, and wherein the catalyst further comprises nanoscopic metal crystallites extending from the surface of the catalyst.