Bulk-independent surface oxide composition controls the electrochemical performance of high-entropy alloys

Author:

Kogler Matthias12,Olgiati Matteo12,Ostermann Markus2ORCID,Rachle Philipp1,Gahlawat Soniya12,Valtiner Markus12ORCID,Pichler Christian M.12ORCID

Affiliation:

1. Institute of Applied Physics, Vienna University of Technology, 1040 Vienna, Austria

2. Center for Electrochemical Surface Technology GmbH, 2700 Wr. Neustadt, Austria

Abstract

Low-energy ion scattering revealed the true reactive surface composition of high-entropy alloys, differing significantly from the bulk. No significant enhancement in OER performance was observed with high-entropy alloying compared to simpler alloys.

Funder

Gesellschaft für Forschungsförderung Niederösterreich

Austrian Science Fund

European Regional Development Fund

Österreichische Forschungsförderungsgesellschaft

Technische Universität Wien Bibliothek

Publisher

Royal Society of Chemistry (RSC)

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