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Photoelectron Spectroscopy at the Graphene–Liquid Interface Reveals the Electronic Structure of an Electrodeposited Cobalt/Graphene Electrocatalyst
Open accessAbstract
Electrochemically grown cobalt on graphene exhibits exceptional performance as a catalyst for the oxygen evolution reaction (OER) and provides the possibility of controlling the morphology and the chemical properties during deposition. However, the detailed atomic structure of this hybrid material is not well understood. To elucidate the Co/graphene electronic structure, we have developed a flow cell closed by a graphene membrane that provides electronic and chemical information on the active surfaces under atmospheric pressure and in the presence of liquids by means of X‐ray photoelectron spectroscopy (XPS). We found that cobalt is anchored on graphene via carbonyl‐like species, namely Co(CO)x, promoting the reduction of Co 3+ to Co 2+, which is believed to be the active site of the catalyst.
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Lightcap, I. V., Kosel, T. H., & Kamat, P. V. (2010) · Nano Letters · doi:10.1021/nl9035109 · Cited by 1,044
Cited by
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Timoshenko, J., & Roldan Cuenya, B. (2021) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00396 · Cited by 931
Zhao, Y., Adiyeri Saseendran, D. P., Huang, C., Triana, C. A., Marks, W. R., Chen, H., Zhao, H., & Patzke, G. R. (2023) · Chemical Reviews · doi:10.1021/acs.chemrev.2c00515 · Cited by 802
Shih, A. J., Monteiro, M. C. O., Dattila, F., Pavesi, D., Philips, M., da Silva, A. H. M., Vos, R. E., Ojha, K., Park, S., van der Heijden, O., et al. (2022) · Nature Reviews Methods Primers · doi:10.1038/s43586-022-00164-0 · Cited by 521
Kalz, K. F., Kraehnert, R., Dvoyashkin, M., Dittmeyer, R., Gläser, R., Krewer, U., Reuter, K., & Grunwaldt, J. (2017) · ChemCatChem · doi:10.1002/cctc.201600996 · Cited by 458
In situ observation of reactive oxygen species forming on oxygen-evolving iridium surfaces
Pfeifer, V., Jones, T. E., Velasco Vélez, J. J., Arrigo, R., Piccinin, S., Hävecker, M., Knop-Gericke, A., & Schlögl, R. (2017) · Chemical Science · doi:10.1039/c6sc04622c · Cited by 386
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Metadata
- Authors
- Velasco‐Velez, J. J., Pfeifer, V., Hävecker, M., Weatherup, R. S., Arrigo, R., Chuang, C., Stotz, E., Weinberg, G., Salmeron, M., Schlögl, R., & Knop‐Gericke, A.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2015-10-14
- Volume
- 54
- Issue
- 48
- Pages
- 14554-14558
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2117080490
- Cited by
- 170
- References
- 1
- FWCI
- 4.89
- Type
- journal article
- Language
- en
- Open access
- green
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- Velasco‐Velez, J. J., Pfeifer, V., Hävecker, M., Weatherup, R. S., Arrigo, R., Chuang, C., Stotz, E., Weinberg, G., Salmeron, M., Schlögl, R., & Knop‐Gericke, A. (2015). Photoelectron Spectroscopy at the Graphene–Liquid Interface Reveals the Electronic Structure of an Electrodeposited Cobalt/Graphene Electrocatalyst. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201506044
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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