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

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

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 m...

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Veröffentlicht in:Sustainable energy & fuels 2021-11, Vol.5 (22), p.5762-5772
Hauptverfasser: Jimenez, Ana Maria Barrios, Ormeci, Alim, Burkhardt, Ulrich, Altendorf, Simone G., Kaiser, Felix, Veremchuk, Igor, Auffermann, Gudrun, Grin, Yuri, Antonyshyn, Iryna
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum
Charge transfer
Chemistry
Chemistry, Physical
Crystal structure
Electrocatalysts
Energy & Fuels
Intermetallic compounds
Leaching
Materials Science
Materials Science, Multidisciplinary
Oxygen
Oxygen evolution reactions
Physical Sciences
Platinum
Science & Technology
Technology
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Zusammenfassung: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.
ISSN:2398-4902
2398-4902
DOI:10.1039/d1se01190a