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This content will become publicly available on March 24, 2017

Title: Homogeneously dispersed, multimetal oxygen-evolving catalysts

Earth-abundant first-row (3d) transition-metal-based catalysts have been developed for the oxygen-evolution reaction (OER); however, they operate at overpotentials significantly above thermodynamic requirements. Density functional theory suggested that non-3d high-valency metals such as tungsten can modulate 3d metal oxides, providing near-optimal adsorption energies for OER intermediates. We developed a room-temperature synthesis to produce gelled oxy-hydroxide materials with an atomically homogeneous metal distribution. These gelled FeCoW oxy-hydroxide exhibits the lowest overpotential (191 mV) reported at 10 mA per square centimeter in alkaline electrolyte. Here, the catalyst shows no evidence of degradation following more than 500 hours of operation. X-ray absorption and computational studies reveal a synergistic interplay between W, Fe and Co in producing a favorable local coordination environment and electronic structure that enhance the energetics for OER.
 [1] ;  [2] ;  [3] ;  [3] ;  [4] ;  [4] ;  [5] ;  [3] ;  [3] ;  [6] ; ;  [3] ;  [3] ;  [3] ;  [3] ;  [7] ;  [7] ;  [8] ;  [8] ;  [3] more »;  [3] ;  [9] ;  [8] ;  [4] ;  [3] « less
  1. Univ. of Toronto, Toronto, ON (Canada); East China Univ. of Science and Technology, Shanghai (China)
  2. Univ. of Toronto, Toronto, ON (Canada); Tianjin Univ., Tianjin (China)
  3. Univ. of Toronto, Toronto, ON (Canada)
  4. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  5. Tianjin Univ., Tianjin (China); Brookhaven National Lab. (BNL), Upton, NY (United States)
  6. Chinese Academy of Sciences, Beijing (China)
  7. Canadian Light Source, Inc. (CLSI), Saskatoon (Canada)
  8. East China Univ. of Science and Technology, Shanghai (China)
  9. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 0036-8075; R&D Project: 16060/16060; KC0403020
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Additional Journal Information:
Journal Volume: 67; Journal Issue: 10; Journal ID: ISSN 0036-8075
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States