Volume 127, Issue 42 pp. 12538-12542
Zuschrift

The Synthesis of Nanostructured Ni5P4 Films and their Use as a Non-Noble Bifunctional Electrocatalyst for Full Water Splitting

Marc Ledendecker

Marc Ledendecker

Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam (Germany)

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Sandra Krick Calderón

Sandra Krick Calderón

Department of Physical Chemistry II, Friedrich-Alexander Universität Erlangen Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany)

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Dr. Christian Papp

Dr. Christian Papp

Department of Physical Chemistry II, Friedrich-Alexander Universität Erlangen Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany)

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Prof. Dr. Hans-Peter Steinrück

Prof. Dr. Hans-Peter Steinrück

Department of Physical Chemistry II, Friedrich-Alexander Universität Erlangen Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany)

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Prof. Dr. Markus Antonietti

Prof. Dr. Markus Antonietti

Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam (Germany)

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Dr. Menny Shalom

Corresponding Author

Dr. Menny Shalom

Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam (Germany)

Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam (Germany)Search for more papers by this author
First published: 30 June 2015
Citations: 218

S.K.C., C.P., and H.-P.S. greatly acknowledge support by the Cluster of Excellence Engineering of Advanced Materials (EAM) at the Friedrich-Alexander-University Erlangen-Nürnberg.

Abstract

The investigation of nickel phosphide (Ni5P4) as a catalyst for the hydrogen (HER) and oxygen evolution reaction (OER) in strong acidic and alkaline environment is described. The catalyst can be grown in a 3D hierarchical structure directly on a nickel substrate, thus making it an ideal candidate for practical water splitting devices. The activity of the catalyst towards the HER, together with its high stability especially in acidic solution, makes it one of the best non-noble materials described to date. Furthermore, Ni5P4 was investigated in the OER and showed activity superior to pristine nickel or platinum. The practical relevance of Ni5P4 as a bifunctional catalyst for the overall water splitting reaction was demonstrated, with 10 mA cm−2 achieved below 1.7 V.

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