Fig. 1: Schematics of the MEA-based CO2RR electrolyzer and the performance prediction of non-isothermal operation. | Nature Communications

Fig. 1: Schematics of the MEA-based CO2RR electrolyzer and the performance prediction of non-isothermal operation.

From: Non-isothermal CO2 electrolysis enables simultaneous enhanced electrochemical and anti-precipitation performance

Fig. 1

a Schematic of the MEA electrolyzer for CO2 reduction into CO includes two Ti plates with water channels for temperature control and a serpentine flow channel for reactant feed and product discharge. The anodic and cathodic Ti plates sandwich the IrO2-Ti anode, anion exchange membrane, Ag-NPs cathode, and PTFE gaskets to form the electrolyzer. b Schematic of the reaction and ion transport mechanism for the non-isothermal case for CO2RR. K+ migrates from the anode to the cathode side, while it can be back transferred by diffusion and thermal diffusion. c The predicted electrochemical performance of the MEA electrolyzer under various alkalinities utilizing a multi-physical model. The salt saturation is defined as the ratio of the highest local salt concentrations to the saturation concentration of K2CO3, and the green circles represent the salting-out current density. d The energy efficiency as a function of various cathodic and anodic temperatures. Source data is provided as a Source Data file.

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