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Ligand-Controlled Electrodeposition of Highly Intrinsically Active and Optically Transparent NiFeOxHy Film as a Water Oxidation Electrocatalyst
KTH, Superseded Departments (pre-2005), Chemistry.ORCID iD: 0000-0002-4521-2870
2017 (English)In: ChemSusChem, ISSN 1864-5631, E-ISSN 1864-564X, Vol. 10, no 23, p. 4690-4694Article in journal (Refereed) Published
Abstract [en]

A highly intrinsically active and optically transparent NiFeOxHy water oxidation catalyst was prepared by electrodeposition of [Ni(C12-tpen)](ClO4)2 complex (Ni−C12). This NiFeOxHy film has a current density of 10 mA cm−2 with an overpotential (η) of only 298 mV at nanomolar concentration and the current density of 10 mA cm−2 remains constant over 22 h in 1 m KOH. The extremely high turnover frequency of 0.51 s−1 was obtained with η of 300 mV. More importantly, such outstanding activity and transparency (optical loss <0.5 %) of the NiFeOxHy film are attributed to a ligand effect of the dodecyl substituent in Ni−C12, which enables its future application in solar water splitting.

Place, publisher, year, edition, pages
Wiley-VCH Verlag , 2017. Vol. 10, no 23, p. 4690-4694
Keywords [en]
electrocatalysis, electrodeposition, ligand effects, thin films, water oxidation, Electrocatalysts, Electrodes, Iron compounds, Ligands, Nickel, Oxidation, Potash, Future applications, Ligand effect, Nanomolar concentration, Overpotential, Solar water splitting, Turnover frequency, Water oxidation catalysts, Nickel compounds, ferric ion, ferric oxide, ligand, water, catalysis, chemistry, electroplating industry, oxidation reduction reaction, procedures, Electroplating, Ferric Compounds, Oxidation-Reduction
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-227112DOI: 10.1002/cssc.201701869Scopus ID: 2-s2.0-85033799996OAI: oai:DiVA.org:kth-227112DiVA, id: diva2:1205834
Note

QC 20180515

Available from: 2018-05-15 Created: 2018-05-15 Last updated: 2018-05-15Bibliographically approved

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Sun, Licheng

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