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Electrocatalytic water oxidation by a nickel oxide film derived from a molecular precursor
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2017 (English)In: Cuihuà xuébào, ISSN 0253-9837, E-ISSN 1872-2067, Vol. 38, no 11, p. 1812-1817Article in journal (Refereed) Published
Abstract [en]

In this study, we fabricated a NiOx film by electrodeposition of an ethanediamine nickel complex precursor (pH = 11) on a fluorine-doped tin oxide substrate. The resulting film is robust and exhibits high catalytic activity for electrochemical water oxidation. Water oxidation is initiated with an overpotential of 375 mV (1 mA/cm2) and a steady current density of 8.5 mA/cm2 is maintained for at least 10 h at 1.3 V versus the normal hydrogen electrode. Kinetic analysis reveals that there is a 2e−/3H+ pre-equilibrium process before the chemical rate-determining step. The low-cost preparation, robustness, and longevity make this catalyst competitive for applications in solar energy conversion and storage.

Place, publisher, year, edition, pages
Science Press , 2017. Vol. 38, no 11, p. 1812-1817
Keywords [en]
Electrolysis, Molecular precursor, Nickel oxide, Water oxidation, Water splitting
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URN: urn:nbn:se:kth:diva-220219DOI: 10.1016/S1872-2067(17)62921-8ISI: 000424064600005Scopus ID: 2-s2.0-85036520416OAI: oai:DiVA.org:kth-220219DiVA, id: diva2:1167204
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QC 20171218

Available from: 2017-12-18 Created: 2017-12-18 Last updated: 2018-02-16Bibliographically approved

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Sun, Licheng

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Organic ChemistryCentre of Molecular Devices, CMD
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