Al2Pt for Oxygen Evolution in Water Splitting: A Strategy for Creating Multifunctionality in Electrocatalysis

The production of hydrogen via water electrolysis is feasible only if effective and stable catalysts for the oxygen evolution reaction (OER) are available. Intermetallic compounds with well‐defined crystal and electronic structures as well as particular chemical bonding features are suggested here t...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2020-09, Vol.59 (38), p.16770-16776
Main Authors: Antonyshyn, Iryna, Barrios Jiménez, Ana M., Sichevych, Olga, Burkhardt, Ulrich, Veremchuk, Igor, Schmidt, Marcus, Ormeci, Alim, Spanos, Ioannis, Tarasov, Andrey, Teschner, Detre, Algara‐Siller, Gerardo, Schlögl, Robert, Grin, Yuri
Format: Article
Language:English
Subjects:
Bonding strength
Catalysts
Chemical bonds
Composite materials
Crystal structure
electrocatalysis
Electrolysis
Fluorite
Hydrogen production
Intermetallic compounds
intermetallic phases
Nanocomposites
Oxygen
Oxygen evolution reactions
Platinum
Precursors
Water splitting
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Summary:The production of hydrogen via water electrolysis is feasible only if effective and stable catalysts for the oxygen evolution reaction (OER) are available. Intermetallic compounds with well‐defined crystal and electronic structures as well as particular chemical bonding features are suggested here to act as precursors for new composite materials with attractive catalytic properties. Al2Pt combines a characteristic inorganic crystal structure (anti‐fluorite type) and a strongly polar chemical bonding with the advantage of elemental platinum in terms of stability against dissolution under OER conditions. We describe here the unforeseen performance of a surface nanocomposite architecture resulting from the self‐organized transformation of the bulk intermetallic precursor Al2Pt in OER. Unforeseen performance: The study of the chemical and morphological transformation of intermetallic Al2Pt, a precursor of a new composite material, under the harsh oxidative conditions of the oxygen evolution reaction (OER) is accompanied by its electrochemical characterization at different stages of long‐term operation.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202005445