Connecting Cell Structure and Current‐Dependent Environment Changes in CO 2 Electrolysis to GDE Operation Regimes and Multi‐Cell Interaction

Electrochemical Science Advances, vol. 5

Abstract

ABSTRACT Consecutive development of materials, components, and ultimately, devices does not appear to be a promising strategy in CO 2 electroreduction because maintaining comparability and transferring results between idealized and application‐oriented systems proves challenging. A modular cell design and tracking cell conditions via sensors may be a solution. We displayed a strategy to characterize gas diffusion electrode operating regimes in a flow cell with regard to different current density ranges, as well as the impact of the flow gap design. We revealed strong interdependencies between cell components, their functions as well as individual cells when integrated into a stack. Expanding the scope and resolution of experimental data made new information on the change of system parameters in flow cells accessible.

Authors 5

1. Christina Martens corresponding Aachen Institute of Physical Chemistry

   Forschungszentrum Jülich · RWTH Aachen University

   Affiliation as printed

   Institute of Energy Technologies–Fundamental Electrochemistry (IET‐1) Forschungszentrum Jülich GmbH Jülich Germany

   Institute of Physical Chemistry RWTH Aachen University Aachen Germany

   Institute of Energy Technologies–Fundamental Electrochemistry (IET‐1) Forschungszentrum Jülich GmbH Jülich Germany

2. Maximilian Quentmeier Aachen Institute of Physical Chemistry

   Forschungszentrum Jülich · RWTH Aachen University

   Affiliation as printed

   Institute of Energy Technologies–Fundamental Electrochemistry (IET‐1) Forschungszentrum Jülich GmbH Jülich Germany

   Institute of Physical Chemistry RWTH Aachen University Aachen Germany

   Institute of Energy Technologies–Fundamental Electrochemistry (IET‐1) Forschungszentrum Jülich GmbH Jülich Germany

3. Bernhard Schmid corresponding

   Forschungszentrum Jülich

   Affiliation as printed

   Institute of Energy Technologies–Fundamental Electrochemistry (IET‐1) Forschungszentrum Jülich GmbH Jülich Germany

4. Hermann Tempel

   Forschungszentrum Jülich

   Affiliation as printed

   Institute of Energy Technologies–Fundamental Electrochemistry (IET‐1) Forschungszentrum Jülich GmbH Jülich Germany

5. Rüdiger‐A. Eichel Aachen Institute of Physical Chemistry

   Forschungszentrum Jülich · RWTH Aachen University

   Affiliation as printed

   Institute of Energy Technologies–Fundamental Electrochemistry (IET‐1) Forschungszentrum Jülich GmbH Jülich Germany

   Institute of Physical Chemistry RWTH Aachen University Aachen Germany

   Institute of Energy Technologies–Fundamental Electrochemistry (IET‐1) Forschungszentrum Jülich GmbH Jülich Germany