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Title: Oxygen Reduction Reaction on Ag(111) in Alkaline Solution: A Combined Density Functional Theory and Kinetic Monte Carlo Study

Journal Article · · ChemCatChem
 [1];  [2]; ORCiD logo [3]
  1. State Univ. of New York (SUNY), Stony Brook, NY (United States). Chemistry Dept.
  2. State Univ. of New York (SUNY), Stony Brook, NY (United States). Chemistry Dept.; Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Division
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Division

We reported a detailed mechanistic study of the oxygen reduction reaction (ORR) on the model Ag(111) surface in alkaline solution by using density functional theory (DFT) and Kinetic Monte Carlo (KMC) simulations, in which multiple pathways involving either 2 e- or 4 e- mechanisms were included. The theoretical modelling presented here is able to reproduce the experimentally measured polarization curves in both low and high potential regions. An electrochemical 4 e- network including both a chemisorbed water (*H2O)-mediated 4 e- associative pathway and the conventional associative pathway was identified to dominate the ORR mechanism. On the basis of the mechanistic understanding derived from these calculations, the ways to promote the ORR on Ag(111) were provided, including facilitating *OH removal, **O2 reduction by *H2O, and suppressing **O2 desorption. Finally, the origin of the different ORR behaviors of Ag(111) and Pt(111) was also discussed in detail.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division; National Energy Research Scientific Computing Center (NERSC); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Grant/Contract Number:
SC0012704; AC02-05CH11231
OSTI ID:
1424995
Alternate ID(s):
OSTI ID: 1418069
Report Number(s):
BNL-114833-2017-JAAM
Journal Information:
ChemCatChem, Vol. 10, Issue 3; ISSN 1867-3880
Publisher:
ChemPubSoc EuropeCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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Cited By (4)

Non-Monotonic Trends of Hydrogen Adsorption on Single Atom Doped g-C3N4 journal January 2019
Recent Studies on Bifunctional Perovskite Electrocatalysts in Oxygen Evolution, Oxygen Reduction, and Hydrogen Evolution Reactions under Alkaline Electrolyte journal May 2019
Oxygen Reduction Reaction on Silver Catalysts in Alkaline Media: a Minireview journal October 2018
Optimized Pt-Based Catalysts for Oxygen Reduction Reaction in Alkaline Solution: A First Principle Study journal January 2018

Figures / Tables (10)