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      Developments and perspectives of oxide-based catalysts for the oxygen evolution reaction

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          Abstract

          Activity, selectivity and stability of oxygen evolution catalysts for water electrolyzers: an interplay between composition, morphology, preparation and processing.

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          A perovskite oxide optimized for oxygen evolution catalysis from molecular orbital principles.

          Jin Suntivich, Kevin May, Hubert Gasteiger … (2011)
          The efficiency of many energy storage technologies, such as rechargeable metal-air batteries and hydrogen production from water splitting, is limited by the slow kinetics of the oxygen evolution reaction (OER). We found that Ba(0.5)Sr(0.5)Co(0.8)Fe(0.2)O(3-δ) (BSCF) catalyzes the OER with intrinsic activity that is at least an order of magnitude higher than that of the state-of-the-art iridium oxide catalyst in alkaline media. The high activity of BSCF was predicted from a design principle established by systematic examination of more than 10 transition metal oxides, which showed that the intrinsic OER activity exhibits a volcano-shaped dependence on the occupancy of the 3d electron with an e(g) symmetry of surface transition metal cations in an oxide. The peak OER activity was predicted to be at an e(g) occupancy close to unity, with high covalency of transition metal-oxygen bonds.
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            Double perovskites as a family of highly active catalysts for oxygen evolution in alkaline solution.

            Alexis Grimaud, Kevin J May, Christopher Carlton … (2013)
            The electronic structure of transition metal oxides governs the catalysis of many central reactions for energy storage applications such as oxygen electrocatalysis. Here we exploit the versatility of the perovskite structure to search for oxide catalysts that are both active and stable. We report double perovskites (Ln₀.₅Ba₀.₅)CoO(₃-δ) (Ln=Pr, Sm, Gd and Ho) as a family of highly active catalysts for the oxygen evolution reaction upon water oxidation in alkaline solution. These double perovskites are stable unlike pseudocubic perovskites with comparable activities such as Ba₀.₅Sr₀.₅Co₀.₈Fe₀.₂O(₃-δ) which readily amorphize during the oxygen evolution reaction. The high activity and stability of these double perovskites can be explained by having the O p-band centre neither too close nor too far from the Fermi level, which is computed from ab initio studies.
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              The Mechanism of Water Oxidation: From Electrolysis via Homogeneous to Biological Catalysis

              Peter Strasser, Stefan Roggan, Holger Dau … (2010)
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                Author and article information

                Journal
                Journal ID (publisher-id): CSTAGD
                Title: Catal. Sci. Technol.
                Abbreviated Title: Catal. Sci. Technol.
                Publisher: Royal Society of Chemistry (RSC)
                ISSN (Print): 2044-4753
                ISSN (Electronic): 2044-4761
                Publication date Created: 2014
                Publication date (Print): 2014
                Volume: 4
                Issue: 11
                Pages: 3800-3821
                Article
                DOI: 10.1039/C4CY00669K
                SO-VID: f90f969e-a2ab-4527-b85a-6995730b3e6f
                Copyright © © 2014
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