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

MPS-Authors
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Barrios Jiménez,  Ana María
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Ormeci,  Alim
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Burkhardt,  Ulrich
Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Altendorf,  Simone G.
Simone Altendorf, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Kaiser,  Felix
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Veremchuk,  Igor
Igor Veremchuk, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Auffermann,  Gudrun
Gudrun Auffermann, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Grin,  Yuri
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Antonyshyn,  Iryna
Iryna Antonyshyn, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Barrios Jiménez, A. M., Ormeci, A., Burkhardt, U., Altendorf, S. G., Kaiser, F., Veremchuk, I., et al. (2021). Intermetallic compounds M2Pt (M = Al, Ga, In, Sn) in the oxygen evolution reaction. Sustainable Energy & Fuels, 5(22), 5762-5772. doi:10.1039/D1SE01190A.


Cite as: https://hdl.handle.net/21.11116/0000-0009-7EEC-1
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 MxPt1−x layers.