Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

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

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

Official URL: Volltext

Project information

Project title:
Project's official titleProject's id
Wertschöpfung durch elektrolytische Reduktion von CO2: Langzeitstabile, Ethen-selektive Prozessführung mit einem hochskalierbaren VerfahrenAZ-1391-19

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
Refereed: Yes
Keywords: electrochemical CO₂ reduction; ethylene; flow cells; gas diffusion
electrodes; pulsed potential electrolysis
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: 19 Jul 2022 06:55
Last Modified: 04 Oct 2022 06:41
URI: https://eref.uni-bayreuth.de/id/eprint/70615