US 11,955,645 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, Inver Grove Heights, MN (US); Cedric Bedoya, Woodbury, MN (US); Zhenhua Zeng, West Lafayette, IN (US); and Jeffrey P. Greeley, West Lafayette, IN (US)
Assigned to 3M Innovative Properties Company, Saint Paul, MN (US)
Appl. No. 17/047,029
Filed by 3M Innovative Properties Company, Saint Paul, MN (US)
PCT Filed Apr. 11, 2019, PCT No. PCT/IB2019/053001
§ 371(c)(1), (2) Date Oct. 12, 2020,
PCT Pub. No. WO2019/198029, PCT Pub. Date Oct. 17, 2019.
Claims priority of provisional application 62/657,189, filed on Apr. 13, 2018.
Prior Publication US 2021/0075026 A1, Mar. 11, 2021
Int. Cl. H01M 4/90 (2006.01); H01M 4/86 (2006.01); H01M 4/92 (2006.01)
CPC H01M 4/9041 (2013.01) [H01M 4/8657 (2013.01); H01M 4/9058 (2013.01); H01M 4/92 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An article comprising:
nanostructured elements comprising microstructured whiskers having an outer surface; and
a catalyst on the outer surface, the catalyst comprising a Ta layer having an outer layer with a layer comprising Pt directly thereon, wherein the Ta 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, and wherein the Pt and Ta are present in an atomic ratio in a range from 0.01:1 to 10:1.