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Improved water oxidation with metal oxide catalysts via a regenerable and redox-inactive ZnOxHy overlayer


Nandy, Swarnava; Wu, Qianbao; Tilley, S David; Cui, Chunhua (2021). Improved water oxidation with metal oxide catalysts via a regenerable and redox-inactive ZnOxHy overlayer. Chemical Communications, 57(79):10230-10233.

Abstract

We report a regenerable and redox-inactive ZnOxHy layer that was in situ deposited onto metal oxides MOz (M = Co, Fe, and Ni) in alkaline media containing [Zn(OH)4]2− species during water oxidation. An interface dipole was developed at the MOz/Zn interface, resulting in a decrease of the OER overpotential. Exemplified by the CoOz/ZnOxHy bilayer structure, it presented a 155 mV lower overpotential to deliver 10 mA cm−2 and long-term stability relative to the unmodified CoOz film.

Abstract

We report a regenerable and redox-inactive ZnOxHy layer that was in situ deposited onto metal oxides MOz (M = Co, Fe, and Ni) in alkaline media containing [Zn(OH)4]2− species during water oxidation. An interface dipole was developed at the MOz/Zn interface, resulting in a decrease of the OER overpotential. Exemplified by the CoOz/ZnOxHy bilayer structure, it presented a 155 mV lower overpotential to deliver 10 mA cm−2 and long-term stability relative to the unmodified CoOz film.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
08 Research Priority Programs > Solar Light to Chemical Energy Conversion
Dewey Decimal Classification:540 Chemistry
Scopus Subject Areas:Physical Sciences > Catalysis
Physical Sciences > Electronic, Optical and Magnetic Materials
Physical Sciences > Ceramics and Composites
Physical Sciences > General Chemistry
Physical Sciences > Surfaces, Coatings and Films
Physical Sciences > Metals and Alloys
Physical Sciences > Materials Chemistry
Uncontrolled Keywords:Materials Chemistry, Metals and Alloys, Surfaces, Coatings and Films, General Chemistry, Ceramics and Composites, Electronic, Optical and Magnetic Materials, Catalysis
Language:English
Date:1 January 2021
Deposited On:10 Feb 2022 07:05
Last Modified:27 May 2024 01:52
Publisher:Royal Society of Chemistry
ISSN:1359-7345
OA Status:Green
Publisher DOI:https://doi.org/10.1039/d1cc03406e
  • Content: Accepted Version