Design of complex solid‐solution electrocatalysts by correlating configuration, adsorption energy distribution patterns, and activity curves
- Complex solid‐solution electrocatalysts (also referred to as high‐entropy alloy) are gaining increasing interest owing to their promising properties which were only recently discovered. With the capability of forming complex single‐phase solid solutions from five or more constituents, they offer unique capabilities of fine‐tuning adsorption energies. However, the elemental complexity within the crystal structure and its effect on electrocatalytic properties is poorly understood. We discuss how addition or replacement of elements affect the adsorption energy distribution pattern and how this impacts the shape and activity of catalytic response curves. We highlight the implications of these conceptual findings on improved screening of new catalyst configurations and illustrate this strategy based on the discovery and experimental evaluation of several highly active complex solid solution nanoparticle catalysts for the oxygen reduction reaction in alkaline media.
| Author: | Tobias LöfflerORCiDGND, Alan SavanORCiDGND, Hajo MeyerGND, Michael MeischeinORCiDGND, Valerie StrotkötterGND, Alfred LudwigORCiDGND, Wolfgang SchuhmannORCiDGND |
|---|---|
| URN: | urn:nbn:de:hbz:294-77664 |
| DOI: | https://doi.org/10.1002/ange.201914666 |
| Parent Title (German): | Angewandte Chemie |
| Publisher: | Wiley-VCH Verlag |
| Place of publication: | Weinheim |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2021/01/14 |
| Date of first Publication: | 2020/03/27 |
| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
| Tag: | catalyst screening; electrocatalysis; high-entropy alloys; intrinsic activity; oxygen reduction reaction (ORR) |
| Volume: | 59 |
| Issue: | 14 |
| First Page: | 5844 |
| Last Page: | 5850 |
| Note: | Dieser Beitrag ist auf Grund des DEAL-Wiley-Vertrages frei zugänglich. |
| Institutes/Facilities: | Lehrstuhl für Analytische Chemie und Zentrum für Elektrochemie |
| Institut für Werkstoffe, Materials Discovery and Interfaces | |
| Dewey Decimal Classification: | Naturwissenschaften und Mathematik / Chemie, Kristallographie, Mineralogie |
| open_access (DINI-Set): | open_access |
| Licence (English): |  Creative Commons - CC BY 4.0 - Attribution 4.0 International |
