(129a) Understanding the Performance and Limitations of Membrane-Electrode-Assembly Architectures for the Electrochemical Reduction of CO2
AIChE Annual Meeting
2019
2019 AIChE Annual Meeting
Fuels and Petrochemicals Division
Developments in Electrochemical Reactors, Fuel Cells, and Electrolyzers
Monday, November 11, 2019 - 12:35pm to 1:00pm
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.
Acknowledgements
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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