Iron is the active site in nickel/iron water oxidation electrocatalysts

Bryan M. Hunter, Jay R. Winkler*, Harry B. Gray

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

54 Scopus citations


Efficient catalysis of the oxygen-evolution half-reaction (OER) is a pivotal requirement for the development of practical solar-driven water splitting devices. Heterogeneous OER electrocatalysts containing first-row transition metal oxides and hydroxides have attracted considerable recent interest, owing in part to the high abundance and low cost of starting materials. Among the best performing OER electrocatalysts are mixed Fe/Ni layered double hydroxides (LDH). A review of the available experimental data leads to the conclusion that iron is the active site for [NiFe]-LDH-catalyzed alkaline water oxidation.

Original languageEnglish (US)
Article number903
Issue number4
StatePublished - 2018


  • Electrocatalyst
  • Layered double hydroxide
  • Oxygen evolution reaction

ASJC Scopus subject areas

  • Drug Discovery
  • Analytical Chemistry
  • Chemistry (miscellaneous)
  • Molecular Medicine
  • Physical and Theoretical Chemistry
  • Pharmaceutical Science
  • Organic Chemistry


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