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Open AccessFeature PaperReview

Iron Is the Active Site in Nickel/Iron Water Oxidation Electrocatalysts

Beckman Institute, California Institute of Technology, Pasadena, CA 91125, USA
Authors to whom correspondence should be addressed.
Academic Editors: Björn Åkermark, Eric V. Johnston and Markus D. Kärkäs
Molecules 2018, 23(4), 903;
Received: 28 February 2018 / Revised: 10 April 2018 / Accepted: 12 April 2018 / Published: 14 April 2018
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. View Full-Text
Keywords: oxygen evolution reaction; layered double hydroxide; electrocatalyst oxygen evolution reaction; layered double hydroxide; electrocatalyst
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MDPI and ACS Style

Hunter, B.M.; Winkler, J.R.; Gray, H.B. Iron Is the Active Site in Nickel/Iron Water Oxidation Electrocatalysts. Molecules 2018, 23, 903.

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