Title data
Jännsch, Yannick ; Hämmerle, Martin ; Simon, Elfriede ; Fleischer, Maximilian ; Moos, Ralf:
Contributions of Pulsed Operation Along with Proper Choice of the Substrate for Stabilizing the Catalyst Performance in Electrochemical Reduction of CO₂ Toward Ethylene in Gas Diffusion Electrode Based Flow Cell Reactors.
In: Energy Technology.
Vol. 10
(2022)
Issue 7
.
- No. 2200046.
ISSN 2194-4296
DOI: https://doi.org/10.1002/ente.202200046
Project information
Project title: |
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Project financing: |
Bayerische Forschungsstiftung |
Abstract in another language
Electrochemical reduction of CO₂ is a promising method to close the carbon cycle and thereby contribute to counteracting climate change. A large share of the research is going into the development of new high-performance catalysts. Often, these catalysts are expensive and difficult to synthesize, especially if considering scaling up to the industrial application. The catalyst is, however, only one factor within the complex system of a CO₂-electrolyzer with numerous parameters to explore and optimize. Herein, an optimization process relying on a commercial copper nanopowder as a catalyst is reported. By replacing conductive carbon with polytetrafluoroethylene as the base material of the gas diffusion electrode (GDE) and applying a pulsed potential during electrolysis, the average faradaic efficiency for ethylene could be increased from 38% over 20 h to 50% over 100 h. In addition to the five times increased stability of the process, the ethylene-producing current density rises from 106 to 152 mA cm−2, respectively, while hydrogen evolution was simultaneously reduced. Additionally, further investigations on the interplay of GDE base material, binder, current collector, and catalyst on the electrode performance are presented.
Further data
Item Type: | Article in a journal |
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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 |
Result of work at the UBT: | Yes |
DDC Subjects: | 600 Technology, medicine, applied sciences > 620 Engineering |
Date Deposited: | 19 Jul 2022 06:55 |
Last Modified: | 19 Jul 2022 06:55 |
URI: | https://eref.uni-bayreuth.de/id/eprint/70615 |