(129a) Understanding the Performance and Limitations of Membrane-Electrode-Assembly Architectures for the Electrochemical Reduction of CO2
In this talk, we present a multiphysics modeling framework for MEA systems performing CO2R. We discuss the performance and limitations of two MEA designs: one with gaseous feeds at both the anode and cathode (full-MEA), the other with an aqueous anode feed (KHCO3, KOH, water, exchange solution) and a gaseous cathode feed (exchange-MEA). Finally, we draw insights from sensitivity analysis of key parameters such as catalyst-layer loading and porosity, membrane thickness, kinetic rate constants etc. to guide the design of next-generation CO2R devices and elucidate knowledge gaps to inform future research areas.
This material is based upon work performed by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub, supported through the Office of Science of the U.S. Department of Energy under Award Number DE-SC0004993. We thank David Larson for providing experimental data for CO2 reduction on membrane-electrode assembly devices.
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