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β-Ni(OH)2 and NiO Nanostructured Films Prepared by Using Chemical Bath Deposition for the Oxygen Evolution Reaction

Authors
  • Park, Minjeong1
  • Shin, Eunhye1
  • Hong, Jongin1
  • Paik, Hanjong2
  • 1 Chung-Ang University, Seoul, 06974, Korea , Seoul (South Korea)
  • 2 Cornell University, Ithaca, New York, 14853-1501, USA , Ithaca (United States)
Type
Published Article
Journal
Journal of the Korean Physical Society
Publisher
Korean Physical Society
Publication Date
Nov 19, 2020
Volume
77
Issue
12
Pages
1248–1252
Identifiers
DOI: 10.3938/jkps.77.1248
Source
Springer Nature
Keywords
License
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Abstract

β-Ni(OH)2 and NiO nanostructured films were prepared on fluorine-doped tin oxide (FTO) glass substrates by using chemical bath deposition (CBD) at different concentrations of a complexing agent (i.e., NH3). The as-deposited β-Ni(OH)2 films exhibited various porous structures, such as nanoislands, nanoflakes, nanosheets and nanoplatelets, depending on the concentration of the complexing agent, and they could be converted to NiO films by using calcination. The β-Ni(OH)2 and the NiO films were characterized by using scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS). Importantly, the electrochemical activity of NiO nanoplatelet-films for the oxygen evolution reaction (OER) was also investigated as a function of the annealing temperature.

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