Optimizing CO2-to-CO electrolyzers is important for developing tandem electrolysis processes. Now an efficient precious metal-free CO2-to-CO electrolyzer cathode design allows operation under a low stoichiometric CO2 excess ratio that yields a molar CO concentration of 70% in the exit stream along with a diagnostic approach to its catalytic and mass transport characteristics.
- Sven Brückner
- Quanchen Feng
- Peter Strasser