Intermetallic compounds M2Pt (M = Al, Ga, In, Sn) in the oxygen evolution reaction

Ana María Barrios Jiménez; Alim Ormeci; Ulrich Burkhardt; Simone G. Altendorf; Felix Kaiser; Igor Veremchuk; Gudrun Auffermann; Yuri Grin; Iryna Antonyshyn

doi:10.1039/D1SE01190A

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Intermetallic compounds M₂Pt (M = Al, Ga, In, Sn) in the oxygen evolution reaction†

Ana María Barrios Jiménez,^a Alim Ormeci,

^a Ulrich Burkhardt,

^a Simone G. Altendorf,

^a Felix Kaiser,

^a Igor Veremchuk,^a Gudrun Auffermann,

^a Yuri Grin

^a and Iryna Antonyshyn

*^a

Author affiliations

* Corresponding authors

^a Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Str. 40, 01187 Dresden, Germany
E-mail: Iryna.Antonyshyn@cpfs.mpg.de

Abstract

Pt-based intermetallic compounds M₂Pt with anti-CaF₂ type of crystal structure and counterpart elements (M) from groups 13 (Al, Ga, In) and 14 (Sn) were studied as electrocatalysts for the oxygen evolution reaction (OER) in acidic media. Polar covalent bonding M–Pt with substantial charge transfer makes the difference between M₂Pt and elemental platinum. The compounds M₂Pt (M = Al, Ga, In) possess enhanced OER activity compared to elemental Pt and it improves during the partial on-going leaching of the M component. Therefore, the M₂Pt compounds act as precursors for formation of OER-active M_xPt_1−x layers.

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Article information

DOI: https://doi.org/10.1039/D1SE01190A
Article type: Paper
Submitted: 04 Aug 2021
Accepted: 07 Oct 2021
First published: 08 Oct 2021
This article is Open Access

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Sustainable Energy Fuels, 2021,5, 5762-5772

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Intermetallic compounds M₂Pt (M = Al, Ga, In, Sn) in the oxygen evolution reaction

A. M. Barrios Jiménez, A. Ormeci, U. Burkhardt, S. G. Altendorf, F. Kaiser, I. Veremchuk, G. Auffermann, Y. Grin and I. Antonyshyn, Sustainable Energy Fuels, 2021, 5, 5762 DOI: 10.1039/D1SE01190A

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