Multi-Component Fe-Ni Hydroxide Nanocatalyst for Oxygen Evolution and Methanol Oxidation Reactions under Alkaline Conditions

Stephanie L. Candelaria, Nicholas M. Bedford, Taylor J. Woehl, Nikki S. Rentz, Allison R. Showalter, Svitlana Pylypenko, Bruce A. Bunker, Sungsik Lee, Benjamin Reinhart, Yang Ren, S. Piril Ertem, E. Bryan Coughlin, Nicholas A. Sather, James L. Horan, Andrew M. Herring, Lauren F. Greenlee

Research output: Contribution to journalArticlepeer-review

71 Scopus citations

Abstract

(Graph Presented) Iron-incorporated nickel-based materials show promise as catalysts for the oxygen evolution reaction (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 multistep 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/cm2, the overpotential for monometallic iron and nickel nanoparticles was 421 and 476 mV, respectively, while the bimetallic Fe-Ni nanoparticles had a greatly reduced overpotential of 256 mV. At 10 mA/cm2, bimetallic Fe-Ni nanoparticles had an overpotential of 311 mV. Spectroscopy characterization suggests that the primary phase of nickel in Fe-Ni nanoparticles is the more disordered alpha phase of nickel hydroxide.

Original languageEnglish (US)
Pages (from-to)365-379
Number of pages15
JournalACS Catalysis
Volume7
Issue number1
DOIs
StatePublished - Jan 6 2017

Bibliographical note

Funding Information:
Funding for this research was provided by the NIST Nanomanufacturing Initiative through the NIST Nanoparticle Manufacturing Program. The authors would like to acknowledge Roy H. Geiss for TEM images of Fe NPs and Ni NPs (Supporting Information, Figure S1). ICP-MS measurements were performed at the Laboratory for Environmental and Geological Studies at the University of Colorado at Boulder. XPS measurements were performed by Rocky Mountain Laboratory, Inc. in Golden, CO. XAFS and HE-XRD measurements were performed in 12-BM and 11-ID-C beamlines at the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract DE-AC02-06CH11357. N.S. acknowledges National Science Foundation award number DMR-1063150, REU Site: Research Experiences for Undergraduates in Renewable Energy. The authors also acknowledge Army Research Office MURI award W911NF-11-1-0462.

Publisher Copyright:
© 2016 American Chemical Society.

Keywords

  • alcohol oxidation
  • core-shell nanoparticles
  • electrocatalyst
  • fuel cell
  • nonprecious metal
  • oxygen evolution reaction

Fingerprint

Dive into the research topics of 'Multi-Component Fe-Ni Hydroxide Nanocatalyst for Oxygen Evolution and Methanol Oxidation Reactions under Alkaline Conditions'. Together they form a unique fingerprint.

Cite this