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Title: Perspective—Towards Establishing Apparent Hydrogen Binding Energy as the Descriptor for Hydrogen Oxidation/Evolution Reactions

Abstract

This perspective article formalizes our proposal that the apparent hydrogen binding energy (HBE app), which takes into account of the water adsorption energy as well as the intrinsic hydrogen binding energy (HBE) on metal surfaces, is the descriptor for hydrogen oxidation/evolution reactions (HOR/HERs). We show that the HBE app, not HBE, is pH dependent and can be determined from the underpotential-deposited hydrogen peaks in cyclic voltammograms for platinum group metals including Pt, Ir, Pd, and Rh, and the decrease of their HOR/HER activities with pH is the result of a strengthened HBE app due to a weakened water adsorption. Also discussed are the needs of further experimental and theoretical work to prove this hypothesis.

Authors:
 [1];  [1];  [1];  [1]
  1. Univ. of Delaware, Newark, DE (United States). Dept. of Chemical and Biomolecular Engineering, Center for Catalysis Science and Technology
Publication Date:
Research Org.:
Univ. of Delaware, Newark, DE (United States)
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1510085
Grant/Contract Number:  
AR0000009
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 165; Journal Issue: 2; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; HER; HOR; Hydrogen binding energy

Citation Formats

Zheng, Jie, Nash, Jared, Xu, Bingjun, and Yan, Yushan. Perspective—Towards Establishing Apparent Hydrogen Binding Energy as the Descriptor for Hydrogen Oxidation/Evolution Reactions. United States: N. p., 2018. Web. doi:10.1149/2.0881802jes.
Zheng, Jie, Nash, Jared, Xu, Bingjun, & Yan, Yushan. Perspective—Towards Establishing Apparent Hydrogen Binding Energy as the Descriptor for Hydrogen Oxidation/Evolution Reactions. United States. doi:10.1149/2.0881802jes.
Zheng, Jie, Nash, Jared, Xu, Bingjun, and Yan, Yushan. Sat . "Perspective—Towards Establishing Apparent Hydrogen Binding Energy as the Descriptor for Hydrogen Oxidation/Evolution Reactions". United States. doi:10.1149/2.0881802jes. https://www.osti.gov/servlets/purl/1510085.
@article{osti_1510085,
title = {Perspective—Towards Establishing Apparent Hydrogen Binding Energy as the Descriptor for Hydrogen Oxidation/Evolution Reactions},
author = {Zheng, Jie and Nash, Jared and Xu, Bingjun and Yan, Yushan},
abstractNote = {This perspective article formalizes our proposal that the apparent hydrogen binding energy (HBEapp), which takes into account of the water adsorption energy as well as the intrinsic hydrogen binding energy (HBE) on metal surfaces, is the descriptor for hydrogen oxidation/evolution reactions (HOR/HERs). We show that the HBEapp, not HBE, is pH dependent and can be determined from the underpotential-deposited hydrogen peaks in cyclic voltammograms for platinum group metals including Pt, Ir, Pd, and Rh, and the decrease of their HOR/HER activities with pH is the result of a strengthened HBEapp due to a weakened water adsorption. Also discussed are the needs of further experimental and theoretical work to prove this hypothesis.},
doi = {10.1149/2.0881802jes},
journal = {Journal of the Electrochemical Society},
number = 2,
volume = 165,
place = {United States},
year = {2018},
month = {1}
}

Journal Article:
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