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Issue 69, 2018, Issue in Progress
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Highly efficient hydrogen evolution from water electrolysis using nanocrystalline transition metal phosphide catalysts

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Abstract

Nanocrystalline transition metal phosphides (CoP and Ni2P) were successfully synthesized by a simple calcination method by using transition metal hydroxides and NaH2PO2 as raw materials. Their catalytic activities for the hydrogen evolution from water electrolysis were evaluated with silicotungstic acid as an electron-coupled-proton buffer, whereby hydrogen and oxygen could be produced separately. It was found that the CoP sample showed higher catalytic activity (32 mmol min−1 g−1) and good stability (12 h) as compared to the Ni2P sample, and its catalytic activity could rival that of the commercial Pt/C catalyst. The electrochemical results revealed that CoP had high cathodic current and small charge transfer resistance, which further suggested it was indeed an efficient noble metal-free catalyst for hydrogen evolution from water electrolysis.

Graphical abstract: Highly efficient hydrogen evolution from water electrolysis using nanocrystalline transition metal phosphide catalysts

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Publication details

The article was received on 30 Aug 2018, accepted on 18 Oct 2018 and first published on 26 Nov 2018


Article type: Paper
DOI: 10.1039/C8RA07195K
RSC Adv., 2018,8, 39291-39295
  • Open access: Creative Commons BY-NC license
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    Highly efficient hydrogen evolution from water electrolysis using nanocrystalline transition metal phosphide catalysts

    W. Wu, X. Wu, S. Wang and C. Lu, RSC Adv., 2018, 8, 39291
    DOI: 10.1039/C8RA07195K

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

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