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  Ni/NiO nanoparticles on a phosphorous oxide/graphene hybrid for efficient electrocatalytic water splitting

Wang, J., Xie, Y., Yao, Y., Huang, X., Willinger, M. G., & Shao, L. (2017). Ni/NiO nanoparticles on a phosphorous oxide/graphene hybrid for efficient electrocatalytic water splitting. Journal of Materials Chemistry A, 5(28), 14758-14762. doi: 10.1039/C7TA03628K.

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 Creators:
Wang, Juan1, Author
Xie, Yanan1, Author
Yao, Yuanying1, Author
Huang, Xing2, Author           
Willinger, Marc Georg2, Author           
Shao, Lidong1, Author
Affiliations:
1Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, Shanghai 200090, PR China, ou_persistent22              
2Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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 Abstract: Herein, Ni/NiO nanoparticles were anchored on phosphorous oxide/graphene for electrocatalytic water splitting. The organophosphate units in graphene nanosheets may facilitate the preferred formation of a surface oxide-modified nickel species with stable reduced electron density at the Fermi level. Efficient catalytic activity and stability in a hydrogen evolution reaction (HER) were obtained. Ni/NiO@HGPxOy with a low nickel loading shows an overpotential of 205 mV at a current density of 10 mA cm-2 and a Tafel slope of 80 mV dec-1, whereas those of its undoped counterpart are 278 mV and 117 mV dec-1, respectively. We proposed that the small particle size, uniform dispersion of Ni/NiO nanoparticles, and electronic effect arising from the interactions between HGPx>Oy and Ni/NiO nanohybrids contribute to the improved electrocatalytic performance.

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Language(s): eng - English
 Dates: 2017-04-272017-06-202017-06-202017-07-28
 Publication Status: Issued
 Pages: 5
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1039/C7TA03628K
 Degree: -

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Title: Journal of Materials Chemistry A
  Abbreviation : J. Mater. Chem. A
Source Genre: Journal
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Publ. Info: Cambridge, UK : Royal Society of Chemistry
Pages: 5 Volume / Issue: 5 (28) Sequence Number: - Start / End Page: 14758 - 14762 Identifier: ISSN: 2050-7488
CoNE: https://pure.mpg.de/cone/journals/resource/2050-7488