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

Journal Article · · Journal of the Electrochemical Society
DOI:https://doi.org/10.1149/2.0881802jes· OSTI ID:1510085
 [1];  [2];  [2];  [2]
  1. Univ. of Delaware, Newark, DE (United States). Dept. of Chemical and Biomolecular Engineering, Center for Catalysis Science and Technology; Univ. of Delaware, Newark, DE (United States)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
  2. Univ. of Delaware, Newark, DE (United States). Dept. of Chemical and Biomolecular Engineering, Center for Catalysis Science and Technology
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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.
Research Organization:
Univ. of Delaware, Newark, DE (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Grant/Contract Number:
AR0000009
OSTI ID:
1510085
Journal Information:
Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 2 Vol. 165; ISSN 0013-4651
Publisher:
The Electrochemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (10)

Interfacing nickel nitride and nickel boosts both electrocatalytic hydrogen evolution and oxidation reactions journal October 2018
Ni 3 N as an Active Hydrogen Oxidation Reaction Catalyst in Alkaline Medium journal April 2019
Understanding the pH Dependence of Underpotential Deposited Hydrogen on Platinum journal October 2019
Hydroxide Is Not a Promoter of C 2+ Product Formation in the Electrochemical Reduction of CO on Copper journal March 2020
Titelbild: Hydroxide Is Not a Promoter of C 2+ Product Formation in the Electrochemical Reduction of CO on Copper (Angew. Chem. 11/2020) journal March 2020
Ni 3 N as an Active Hydrogen Oxidation Reaction Catalyst in Alkaline Medium journal May 2019
Understanding the pH Dependence of Underpotential Deposited Hydrogen on Platinum journal December 2019
Hydroxide Is Not a Promoter of C 2+ Product Formation in the Electrochemical Reduction of CO on Copper journal January 2020
Cover Picture: Hydroxide Is Not a Promoter of C 2+ Product Formation in the Electrochemical Reduction of CO on Copper (Angew. Chem. Int. Ed. 11/2020) journal January 2020
Rhodium Phosphide: A New Type of Hydrogen Oxidation Reaction Catalyst with Non‐Linear Correlated Catalytic Response to pH journal March 2019

Figures / Tables (2)

Figure 1(p. 2)figure Figure 1
Figure 2(p. 2)figure Figure 2

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Related Subjects

08 HYDROGEN
HER
HOR
Hydrogen binding energy