An Unconventional Iron Nickel Catalyst for the Oxygen Evolution Reaction.

Autor:	Song F; Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), EPFL-ISIC-LSCI, BCH 3305, Lausanne CH 1015, Switzerland.; State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China., Busch MM; Laboratory for Computational Molecular Design, Institute of Chemical Sciences and Engineering, and National Center for Computational Design and Discovery of Novel Materials (MARVEL), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH 1015, Switzerland., Lassalle-Kaiser B; Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, 91191 Gif-sur-Yvette, France., Hsu CS; Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan., Petkucheva E; Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), EPFL-ISIC-LSCI, BCH 3305, Lausanne CH 1015, Switzerland.; Department of PEM Hydrogen Systems, Acad. E. Budevski Institute of Electrochemistry and Energy Systems (IEES), Acad. G. Bonchev Str. Bl.10, Sofia 1113, Bulgaria., Bensimon M; General Environmental Laboratory, Institute of Environmental Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland., Chen HM; Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan., Corminboeuf C; Laboratory for Computational Molecular Design, Institute of Chemical Sciences and Engineering, and National Center for Computational Design and Discovery of Novel Materials (MARVEL), Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH 1015, Switzerland., Hu X; Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), EPFL-ISIC-LSCI, BCH 3305, Lausanne CH 1015, Switzerland.
Jazyk:	angličtina
Zdroj:	ACS central science [ACS Cent Sci] 2019 Mar 27; Vol. 5 (3), pp. 558-568. Date of Electronic Publication: 2019 Feb 26.
DOI:	10.1021/acscentsci.9b00053
Abstrakt:	The oxygen evolution reaction (OER) is a key process that enables the storage of renewable energies in the form of chemical fuels. Here, we describe a catalyst that exhibits turnover frequencies higher than state-of-the-art catalysts that operate in alkaline solutions, including the benchmark nickel iron oxide. This new catalyst is easily prepared from readily available and industrially relevant nickel foam, and it is stable for many hours. Operando X-ray absorption spectroscopic data reveal that the catalyst is made of nanoclusters of γ-FeOOH covalently linked to a γ-NiOOH support. According to density functional theory (DFT) computations, this structure may allow a reaction path involving iron as the oxygen evolving center and a nearby terrace O site on the γ-NiOOH support oxide as a hydrogen acceptor. Competing Interests: The authors declare the following competing financial interest(s): A European priority patent application (16189000.9) titled Method of synthesis of an electrode for use as a catalyst of oxygen evolution reaction was filed by the EPFL with X.L.H., F.S., and E.P. as inventors.
Databáze:	MEDLINE
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