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Title: Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt-H ad Energetics in Alkaline Electrolyte

Abstract

The understanding of the sluggish hydrogen oxidation reaction (HOR) kinetics in alkaline electrolyte is crucial for designing high performance electrocatalysts. Here, we report a clear and convincing result on this problem by investigating the relationship between the HOR kinetics and Pt-adsorbate energetics. Using electrochemical analysis for well-modified Pt surfaces with distinct Pt-adsorbate interactions, we establish a clear trend in activity for HOR in alkaline electrolyte, that is, the activity changes in the order Au@Pt < Pt < Pd@Pt < Ru@Pt. A decisive role of Pt-H ad energetics in the HOR kinetics on Pt surfaces is determined, while no favorable effects of Pt-OH ad energetics in the HOR kinetics were found. The nature of strong Pt-H ad interaction for Pt/C catalyst in alkaline electrolyte is revealed by in-situ X-ray absorption near-edge structure (XANES) analysis. These insights play an important role for better understanding the mechanism and structure sensitivity for Pt catalyzed hydrogen oxidation reactions.

Authors:
 [1];  [2]; ORCiD logo [2]; ORCiD logo [3];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Kunming Univ. of Science and Technology (China)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Kunming Univ. of Science and Technology (China)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1485438
Report Number(s):
BNL-209670-2018-JAAM
Journal ID: ISSN 0013-4651
Grant/Contract Number:  
SC0012704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 165; Journal Issue: 15; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY

Citation Formats

Hu, Jue, Kuttiyiel, Kurian A., Sasaki, Kotaro, Zhang, Chengxu, and Adzic, Radoslav R.. Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt-Had Energetics in Alkaline Electrolyte. United States: N. p., 2018. Web. doi:10.1149/2.0471815jes.
Hu, Jue, Kuttiyiel, Kurian A., Sasaki, Kotaro, Zhang, Chengxu, & Adzic, Radoslav R.. Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt-Had Energetics in Alkaline Electrolyte. United States. doi:10.1149/2.0471815jes.
Hu, Jue, Kuttiyiel, Kurian A., Sasaki, Kotaro, Zhang, Chengxu, and Adzic, Radoslav R.. Tue . "Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt-Had Energetics in Alkaline Electrolyte". United States. doi:10.1149/2.0471815jes. https://www.osti.gov/servlets/purl/1485438.
@article{osti_1485438,
title = {Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt-Had Energetics in Alkaline Electrolyte},
author = {Hu, Jue and Kuttiyiel, Kurian A. and Sasaki, Kotaro and Zhang, Chengxu and Adzic, Radoslav R.},
abstractNote = {The understanding of the sluggish hydrogen oxidation reaction (HOR) kinetics in alkaline electrolyte is crucial for designing high performance electrocatalysts. Here, we report a clear and convincing result on this problem by investigating the relationship between the HOR kinetics and Pt-adsorbate energetics. Using electrochemical analysis for well-modified Pt surfaces with distinct Pt-adsorbate interactions, we establish a clear trend in activity for HOR in alkaline electrolyte, that is, the activity changes in the order Au@Pt < Pt < Pd@Pt < Ru@Pt. A decisive role of Pt-Had energetics in the HOR kinetics on Pt surfaces is determined, while no favorable effects of Pt-OHad energetics in the HOR kinetics were found. The nature of strong Pt-Had interaction for Pt/C catalyst in alkaline electrolyte is revealed by in-situ X-ray absorption near-edge structure (XANES) analysis. These insights play an important role for better understanding the mechanism and structure sensitivity for Pt catalyzed hydrogen oxidation reactions.},
doi = {10.1149/2.0471815jes},
journal = {Journal of the Electrochemical Society},
number = 15,
volume = 165,
place = {United States},
year = {Tue Nov 20 00:00:00 EST 2018},
month = {Tue Nov 20 00:00:00 EST 2018}
}

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Works referenced in this record:

Prospects for Alkaline Anion-Exchange Membranes in Low Temperature Fuel�Cells
journal, October 2004


Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs
journal, March 2005

  • Gasteiger, Hubert A.; Kocha, Shyam S.; Sompalli, Bhaskar
  • Applied Catalysis B: Environmental, Vol. 56, Issue 1-2, p. 9-35
  • DOI: 10.1016/j.apcatb.2004.06.021

Just a Dream�or Future Reality?
journal, April 2009


Platinum Monolayer Fuel Cell Electrocatalysts
journal, November 2007


Interfacial processes involving electrocatalytic evolution and oxidation of H2, and the role of chemisorbed H
journal, August 2002


Theoretical surface science and catalysis—calculations and concepts
book, January 2000


Alloys of platinum and early transition metals as oxygen reduction electrocatalysts
journal, September 2009

  • Greeley, J.; Stephens, I. E. L.; Bondarenko, A. S.
  • Nature Chemistry, Vol. 1, Issue 7, p. 552-556
  • DOI: 10.1038/nchem.367