Gold–promoted structurally ordered intermetallic palladium cobalt nanoparticles for the oxygen reduction reaction

Kuttiyiel, Kurian A.; Sasaki, Kotaro; Su, Dong; Wu, Lijun; Zhu, Yimei; Adzic, Radoslav R.

doi:10.1038/ncomms6185

Title: Gold–promoted structurally ordered intermetallic palladium cobalt nanoparticles for the oxygen reduction reaction

Journal Article · Thu Nov 06 00:00:00 EST 2014 · Nature Communications

DOI:https://doi.org/10.1038/ncomms6185· OSTI ID:1182508

Kuttiyiel, Kurian A. ^[1]; Sasaki, Kotaro ^[1]; Su, Dong ^[2]; Wu, Lijun ^[3]; Zhu, Yimei ^[3]; Adzic, Radoslav R. ^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.
Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
Brookhaven National Lab. (BNL), Upton, NY (United States). Dept. of Condensed Matter Physics and Materials Science

Considerable efforts to make palladium and palladium alloys active catalysts and a possible replacement for platinum have had a marginal success. Here, we report on a structurally ordered Au₁₀Pd₄₀Co₅₀ catalyst that exhibits comparable activity to conventional platinum catalysts in both acid and alkaline media. Electron microscopic techniques demonstrate that via addition of gold atoms PdCo nanoparticles undergo at elevated temperatures an atomic structural transition from core-shell to a rare intermetallic ordered structure with twin boundaries forming stable {111}, {110} and {100} facets. The superior stability of this catalyst compared to platinum after 10,000 potential cycles in alkaline media is attributed to the atomic structural order of PdCo nanoparticles along with protective effect of clusters of gold atoms on the surface. This strategy of making ordered palladium intermetallic alloy nanoparticles can be used in diverse heterogeneous catalysis where particle size and structural stability matters.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC00112704

OSTI ID:: 1182508

Report Number(s):: BNL-107470-2015-JA; R&D Project: MA510MAEA; MA015MACA; KC0302010; KC0201010

Journal Information:: Nature Communications, Vol. 5, Issue 48; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 140 works

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Title: Gold–promoted structurally ordered intermetallic palladium cobalt nanoparticles for the oxygen reduction reaction

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