Issue 7, 2024

Early-stage performance change of gas diffusion electrodes for CO2 electroreduction to formate

Abstract

The electroreduction of CO2 provides an intriguing technology for the sustainable production of value-added products from unavoidable exhaust gas emissions such as formate. Aiming at a suitable electrode architecture for the electroreduction of CO2 to formate, in this study for the effect of the catalyst loading on the GDE performance, an early-stage performance change was observed by a loss of GDE activity in terms of maximum current density at −1.15 VRHE. The loss of GDE activity was already apparent within the first hour of GDE use and points out the inadequacy of GDEs regarding the lifetime and stability in the field of electroreduction of CO2. Based on the results of the present study, the loss of activity can be explained by agglomeration of catalyst particles and the loss of hydrophobicity.

Graphical abstract: Early-stage performance change of gas diffusion electrodes for CO2 electroreduction to formate

Supplementary files

Article information

Article type
Paper
Submitted
19 okt 2023
Accepted
10 feb 2024
First published
14 feb 2024
This article is Open Access
Creative Commons BY license

Sustainable Energy Fuels, 2024,8, 1483-1494

Early-stage performance change of gas diffusion electrodes for CO2 electroreduction to formate

V. Theußl, H. Weinrich, F. Lisi, H. Tempel and Rüdiger-A. Eichel, Sustainable Energy Fuels, 2024, 8, 1483 DOI: 10.1039/D3SE01347B

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