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Enhanced Electrocatalytic Performance of Processed, Ultrathin, Supported Pd–Pt Core–Shell Nanowire Catalysts for the Oxygen Reduction Reaction

Koenigsmann, Christopher, Santulli, Alexander C., Gong, Kuanping, Vukmirovic, Miomir B., Zhou, Wei-ping, Sutter, Eli, Wong, Stanislaus S., Adzic, Radoslav R.·2011·Journal of the American Chemical Society
DOI 10.1021/ja111130t
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Abstract

We report on the synthesis, characterization, and electrochemical performance of novel, ultrathin Pt monolayer shell-Pd nanowire core catalysts. Initially, ultrathin Pd nanowires with diameters of 2.0 ± 0.5 nm were generated, and a method has been developed to achieve highly uniform distributions of these catalysts onto the Vulcan XC-72 carbon support. As-prepared wires are activated by the use of two distinctive treatment protocols followed by selective CO adsorption in order to selectively remove undesirable organic residues. Subsequently, the desired nanowire core-Pt monolayer shell motif was reliably achieved by Cu underpotential deposition followed by galvanic displacement of the Cu adatoms. The surface area and mass activity of the acid and ozone-treated nanowires were assessed, and the ozone-treated nanowires were found to maintain outstanding area and mass specific activities of 0.77 mA/cm(2) and 1.83 A/mg(Pt), respectively, which were significantly enhanced as compared with conventional commercial Pt nanoparticles, core-shell nanoparticles, and acid-treated nanowires. The ozone-treated nanowires also maintained excellent electrochemical durability under accelerated half-cell testing, and it was found that the area-specific activity increased by ~1.5 fold after a simulated catalyst lifetime.

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Metadata

Authors
Koenigsmann, C., Santulli, A. C., Gong, K., Vukmirovic, M. B., Zhou, W.-P., Sutter, E., Wong, S. S., & Adzic, R. R.
Venue
Journal of the American Chemical Society
Publisher
American Chemical Society (ACS)
Published
2011-06-06
Volume
133
Issue
25
Pages
9783-9795
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
DOI
10.1021/ja111130t
OpenAlex
W1989396636
Cited by
457
References
9
FWCI
22.59
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Enhanced Electrocatalytic Performance of Processed, Ultrathin, Supported Pd–Pt Core–Shell Nanowire Catalysts for the Oxygen Reduction Reaction. https://app.cochat.ai/papers/10.1021/ja111130t
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Koenigsmann, C., Santulli, A. C., Gong, K., Vukmirovic, M. B., Zhou, W.-P., Sutter, E., Wong, S. S., & Adzic, R. R. (2011). Enhanced Electrocatalytic Performance of Processed, Ultrathin, Supported Pd–Pt Core–Shell Nanowire Catalysts for the Oxygen Reduction Reaction. Journal of the American Chemical Society. https://doi.org/10.1021/ja111130t

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