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Title: Activity of N-coordinated multi-metal-atom active site structures for Pt-free oxygen reduction reaction catalysis: Role of *OH ligands

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep09286· OSTI ID:1193434
 [1];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. The Ohio State Univ., Columbus, OH (United States)

We report calculated oxygen reduction reaction energy pathways on multi-metal-atom structures that have previously been shown to be thermodynamically favorable. We predict that such sites have the ability to spontaneously cleave the O₂ bond and then will proceed to over-bind reaction intermediates. In particular, the *OH bound state has lower energy than the final 2 H₂O state at positive potentials. Contrary to traditional surface catalysts, this *OH binding does not poison the multi-metal-atom site but acts as a modifying ligand that will spontaneously form in aqueous environments leading to new active sites that have higher catalytic activities. These *OH bound structures have the highest calculated activity to date.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1193434
Report Number(s):
LA-UR-14-29207; srep09286
Journal Information:
Scientific Reports, Vol. 5, Issue 5; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 98 works
Citation information provided by
Web of Science

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An Isolated Zinc–Cobalt Atomic Pair for Highly Active and Durable Oxygen Reduction journal January 2019
An Isolated Zinc-Cobalt Atomic Pair for Highly Active and Durable Oxygen Reduction journal February 2019
Recent Progress of Carbon-Based Materials in Oxygen Reduction Reaction Catalysis journal January 2018
Electrochemical Evidence for Two Sub-families of FeN x C y Moieties with Concentration-Dependent Cyanide Poisoning journal March 2018
Improving the Activity of M−N 4 Catalysts for the Oxygen Reduction Reaction by Electrolyte Adsorption journal November 2019
A Review on Recent Progress in the Aspect of Stability of Oxygen Reduction Electrocatalysts for Proton‐Exchange Membrane Fuel Cell: Quantum Mechanics and Experimental Approaches journal June 2019
Engineering Single-Atom Cobalt Catalysts toward Improved Electrocatalysis journal March 2018
Application of Nanomaterials Prepared by Thermolysis of Metal Chelates book January 2018
Al-coordination polymer-derived nanoporous nitrogen-doped carbon microfibers as metal-free catalysts for oxygen electroreduction and acetalization reactions journal January 2015
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Direct atomic-level insight into the active sites of a high-performance PGM-free ORR catalyst journal August 2017
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