Emmanuel Batsa Tetteh, Tobias Löffler, Tsvetan Tarnev, Thomas Quast, Patrick Wilde, Harshitha Barike Aiyappa, Simon Schumacher, Corina Andronescu, Richard Tilley, Xingxing Chen, Wolfgang Schuhmann
- Scanning electrochemical cell microscopy (SECCM) is increasingly applied to determine the intrinsic catalytic activity of single electrocatalyst particle. This is especially feasible if the catalyst nanoparticles are large enough that they can be found and counted in post-SECCM scanning electron microscopy images. Evidently, this becomes impossible for very small nanoparticles and hence, a catalytic current measured in one landing zone of the SECCM droplet cannot be correlated to the exact number of catalyst particles. We show, that by introducing a ruler method employing a carbon nanoelectrode decorated with a countable number of the same catalyst particles from which the catalytic activity can be determined, the activity determined using SECCM from many spots can be converted in the intrinsic catalytic activity of a certain number of catalyst nanoparticles.
Metadaten| Author: | Emmanuel Batsa TettehGND, Tobias LöfflerORCiDGND, Tsvetan TarnevORCiDGND, Thomas QuastORCiDGND, Patrick WildeORCiDGND, Harshitha Barike AiyappaORCiDGND, Simon SchumacherGND, Corina AndronescuORCiDGND, Richard TilleyORCiDGND, Xingxing ChenGND, Wolfgang SchuhmannORCiDGND |
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| URN: | urn:nbn:de:hbz:294-100492 |
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| DOI: | https://doi.org/10.1007/s12274-021-3702-7 |
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| Parent Title (English): | Nano research |
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| Subtitle (English): | the intrinsic oxygen reduction activity of PtNi catalyst nanoparticles |
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| Publisher: | Springer |
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| Place of publication: | New York |
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| Document Type: | Article |
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| Language: | English |
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| Date of Publication (online): | 2023/07/20 |
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| Date of first Publication: | 2021/08/19 |
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| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
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| Tag: | PtNi nanoparticles; alkaline medium; intrinsic electrocatalytic activity; nanoelectrochemistry; scanning electrochemical cell microscopy (SECCM); single entity electrochemistry |
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| Volume: | 15 |
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| Issue: | 2 |
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| First Page: | 1564 |
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| Last Page: | 1569 |
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| Note: | Dieser Beitrag ist auf Grund des DEAL-Springer-Vertrages frei zugänglich. |
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| Institutes/Facilities: | Lehrstuhl für Analytische Chemie und Zentrum für Elektrochemie |
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| Dewey Decimal Classification: | Naturwissenschaften und Mathematik / Chemie, Kristallographie, Mineralogie |
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| open_access (DINI-Set): | open_access |
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| faculties: | Fakultät für Chemie und Biochemie |
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| Licence (English): |  Creative Commons - CC BY 4.0 - Attribution 4.0 International |
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