Quantifying mass transport limitations in a microfluidic CO electrolyzer with a gas diffusion cathode.

A gas diffusion electrode (GDE) based CO electrolyzer shows enhanced CO transport to the catalyst surface, significantly increasing current density compared to traditional planar immersed electrodes. A two-dimensional model for the cathode side of a microfluidic CO to CO electrolysis device with a GDE is developed. The model, validated against experimental data, examines key operational parameters and electrode materials.