at Google ScholarTitle data
Engelbrecht, Andreas ; Hämmerle, Martin ; Moos, Ralf ; Fleischer, Maximilian ; Schmid, Günter:
Improvement of the selectivity of the electrochemical conversion of CO₂ to hydrocarbons using cupreous electrodes with in-situ oxidation by oxygen.
In: Electrochimica Acta.
Vol. 224
(2017)
.
- pp. 642-648.
ISSN 0013-4686
DOI: https://doi.org/10.1016/j.electacta.2016.12.059
Abstract in another language
It is still a challenge to find catalysts for the selective electrochemical reduction of CO2 to value added products. We present a new method for the in-situ modification of a copper catalyst by adding oxygen to the reactant gas. With an appropriate process procedure consisting of a sequence of electrolysis and purge steps, a Cu2O layer was formed during the purge steps. When it was reduced again during the next electrolysis step, Cu+ species remained stable on the surface and let to a higher faradaic efficiency for C2H4 formation and even a lower onset potential for CO2 reduction in general. This effect was observed for a wide range of O2 content from 10 % to 60 % in the reactant gas. In comparison to electrolysis with pure CO2, formation of methane was largely suppressed.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Institutions of the University: | Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos Profile Fields > Advanced Fields > Advanced Materials Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT Research Institutions > Research Units > ZET - Zentrum für Energietechnik Faculties Faculties > Faculty of Engineering Science > Chair Functional Materials Profile Fields Profile Fields > Advanced Fields Research Institutions Research Institutions > Research Centres Research Institutions > Research Units |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 600 Technology, medicine, applied sciences > 620 Engineering |
| Date Deposited: | 16 Jan 2017 12:36 |
| Last Modified: | 16 Jan 2017 12:36 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/35677 |