From catalyst layer development to MEA engineering in CO2 electrolysis
Csaba Janáky, University of Szeged, Hungary
Electrochemical reduction of CO2 is a promising method for converting a greenhouse gas into value-added products, utilizing renewable energy. Novel catalysts, electrode assemblies, and cell configurations are all necessary to achieve economically appealing performance. In this talk, I am going to present a zero gap electrolyzer cell, which converts gas phase CO2 to products without the need for any liquid catholyte. I will show how proper cell components and operational conditions result in unprecedentedly high key performance indicators. I will demonstrate the role of each component of the membrane electrode assembly, such as the catalysts, the porous transport layers, the membrane, and the ionomers.
References
[1] C. Janáky et. al.: Multilayer Electrolyzer Stack Converts Carbon Dioxide to Gas Products at High Pressure with High Efficiency, ACS Energy Letters 4 (2019) 1770-1777
[2] C. Janáky et. al.: High carbonate ion conductance of PiperION membrane allows industrial current density and conversion in zero-gap carbon dioxide electrolyzer cell Energy & Environ. Science, 13 (2020) 4098-4105
[3] C. Janáky et. al.: Systematic screening of gas diffusion layers for high performance CO2 electrolysis, Communications Chemistry, 6 (2023) 41
[4] C. Janáky et. al.: Membrane Electrode Assembly for Electrocatalytic CO2 Reduction: Principle and Application, Angewandte Chemistry International Edition, 135 (28), e202302789