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Title: Multi-component Fe–Ni hydroxide nanocatalyst for oxygen evolution and methanol oxidation reactions under alkaline conditions

Here, iron-incorporated nickel-based materials show promise as catalysts for the oxygen evolution reac-tion (OER) half-reaction of water electrolysis. Nickel has also exhibited high catalytic activity for methanol oxidation, particularly when in the form of a bimetallic catalyst. In this work, bimetallic iron-nickel nanoparticles were synthesized using a multi-step procedure in water under ambient conditions. When compared to monometallic iron and nickel nanoparticles, Fe-Ni nanoparticles show enhanced catalytic activity for both OER and methanol oxidation under alkaline conditions. At 1 mA/cm 2, the overpotential for monometallic iron and nickel nanoparticles was 421 mV and 476 mV, respectively, while the bimetallic Fe-Ni nanoparticles had a greatly reduced overpotential of 256 mV. At 10 mA/cm 2, bimetallic Fe-Ni nanoparticles had an overpotential of 311 mV. Spec-troscopy characterization suggests that the primary phase of nickel in Fe-Ni nanoparticles is the more disordered alpha phase of nickel hydroxide.
 [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [2] ;  [4] ;  [4] ;  [4] ;  [5] ;  [5] ;  [6] ;  [3] ; ORCiD logo [3] ; ORCiD logo [7]
  1. National Institute of Standard and Technology, Boulder, CO (United States)
  2. Univ. of Notre Dame, Notre Dame, IN (United States)
  3. Colorado School of Mines, Golden, CO (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
  5. Univ. of Massachusetts, Amherst, MA (United States)
  6. Colorado School of Mines, Golden, CO (United States); Northwestern Univ., Evanston, IL (United States)
  7. National Institute of Standard and Technology, Boulder, CO (United States); Univ. of Arkansas, Fayetteville, AR (United States)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
ACS Catalysis
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2155-5435
American Chemical Society (ACS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
National Institute of Standards and Technology (NIST); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); U.S. Army Research Laboratory, U.S. Army Research Office (ARO)
Country of Publication:
United States
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; alcohol oxidation; core-shell nanoparticles; electrocatalyst; fuel cell; non-precious metal; oxygen evolution reaction
OSTI Identifier: