Journal Article

FZJ-2017-06685

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Interface Engineering in Nanostructured Nickel Phosphide for Efficient and Stable Water Oxidation

Xu, J. ; Wei, X.FZJ* ; Costa, J. D. ; Lado, J. L. ; Owens - Baird, B. ; Goncalves, L. P. L. ; Fernandes, S. P. S. ; Heggen, M.FZJ* ; Petrovykh, D. Y. ; Dunin-Borkowski, R.FZJ* ; Kovnir, K. ; Kolen`ko, Y. V. (Corresponding author)

2017
ACS Washington, DC

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Please use a persistent id in citations: doi:10.1021/acscatal.7b01954

Abstract: An approach to significantly enhance the performance of the cost-effective nickel phosphide catalyst for electrochemical water oxidation has been developed via interfacing with Mg oxide-hydroxide. We have synthesized Ni2P nanoparticles anchored on Mg2O(OH)2-like phase supported on carbon paper. During the oxygen evolution reaction, the well-defined Ni2P nanoparticles serve as precursors for the immediate formation of active and stable nanostructured nickel hydroxide catalyst. As the anode for the oxygen evolution reaction in an alkaline electrolyte, the electrode shows a modest Tafel slope of 48 mV dec–1 and a large turnover frequency of 0.05 s–1 at an overpotential of 0.4 V. Microstructure and composition studies of the catalyst suggest that interfacial strain between Mg- and Ni-containing phases is responsible for high catalytic activity. A significant increase in catalytic activity upon the combination of magnesium compound and transition-metal phosphide suggests an interesting strategy for the controlled and reproducible preparation of active Earth-abundant oxygen-evolving catalysts.

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Contributing Institute(s):

1. Physik Nanoskaliger Systeme (ER-C-1)

Research Program(s):

1. 143 - Controlling Configuration-Based Phenomena (POF3-143) (POF3-143)

Appears in the scientific report 2017

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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