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Cobalt Nickel Boride as an Active Electrocatalyst for Water Splitting

Abstract

Electrochemically splitting water to produce clean hydrogen fuel requires high-performance electrocatalysts. Here, we report ternary transition metal boride Co-Ni-B is an active candidate catalyst for water splitting. The Co-Ni-B nanoparticles were deposited on Ni foam (NF) by a facile electroless plating method. After being properly calcined under Ar atmosphere, the Co-Ni-B@NF catalyst exhibits low overpotential along with high stability in alkaline solution for the oxygen evolution reaction, which is among the best reported levels for non-precious metal catalysts. Furthermore, the properly annealed Co-Ni-B@NF catalyst also shows good activity towards hydrogen evolution reaction. The potential of Co-Ni-B@NF as a bifunctional catalyst for the overall water splitting was demonstrated, with 10 mA/cm2 achieved at 1.72 V. The favorable combination of high catalytic activity, facile preparation and low cost makes Co-Ni-B@NF a very promising bifunctional catalyst for electrochemical water splitting.

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Publication details

The article was received on 26 Mar 2017, accepted on 11 May 2017 and first published on 11 May 2017


Article type: Paper
DOI: 10.1039/C7TA02644G
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Cobalt Nickel Boride as an Active Electrocatalyst for Water Splitting

    N. Xu, G. Cao, Z. Chen, Q. Kang, H. Dai and P. Wang, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA02644G

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