Crossover of CO2, in the form of carbonate, from the cathode to the anodic compartment places a major limitation on carbon efficiency in traditional CO2 electrolysis cells. Here, the authors place a porous solid electrolyte layer between the compartments, where protonation of carbonate during CO2 electrolysis allows recovery of over 90% of the lost CO2 gas.
- Jung Yoon ‘Timothy’ Kim
- Peng Zhu
- Haotian Wang
