title: The synthesis of nanostructured Ni5 P4 films and their use as a non-noble bifunctional electrocatalyst for full water splitting.
abstract: The investigation of nickel phosphide (Ni5 P4 ) 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, Ni5 P4 was investigated in the OER and showed activity superior to pristine nickel or platinum. The practical relevance of Ni5 P4 as a bifunctional catalyst for the overall water splitting reaction was demonstrated, with 10 mA cm(-2) achieved below 1.7 V.
authors.affiliation: Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam (Germany).
authors.forename: Marc
authors.initials: M
authors.lastname: Ledendecker
authors.affiliation: Department of Physical Chemistry II, Friedrich-Alexander Universität Erlangen Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany).
authors.forename: Sandra
authors.initials: S
authors.lastname: Krick Calderón
authors.affiliation: Department of Physical Chemistry II, Friedrich-Alexander Universität Erlangen Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany).
authors.forename: Christian
authors.initials: C
authors.lastname: Papp
authors.affiliation: Department of Physical Chemistry II, Friedrich-Alexander Universität Erlangen Nürnberg, Egerlandstrasse 3, 91058 Erlangen (Germany).
authors.forename: Hans-Peter
authors.initials: HP
authors.lastname: Steinrück
authors.affiliation: Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam (Germany).
authors.forename: Markus
authors.initials: M
authors.lastname: Antonietti
authors.affiliation: Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam (Germany). Menny.Shalom@mpikg.mpg.de.
authors.forename: Menny
authors.initials: M
authors.lastname: Shalom
keywords: ceramics; hydrogen evolution reaction; nickel phosphides; oxygen evolution reaction; water splitting reaction