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

Angewandte Chemie - Tập 127 Số 42 - Trang 12538-12542 - 2015
Marc Ledendecker1, Sandra Krick Calderón2, Christian Papp2, Hans‐Peter Steinrück2, Markus Antonietti1, Menny Shalom1
1Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
2Department of Physical Chemistry II, Friedrich-Alexander Universität Erlangen Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany)

Tóm tắt

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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Thông tin xuất bản

Angewandte Chemie

Tập 127 Số 42

12538-12542

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