The alkali-metal electrolytes often used in electrocatalytic CO2 reduction can lead to problematic carbonate formation and salt precipitation. Here, the authors demonstrate a scaled-up system for CO2 reduction that uses both anion-exchange and proton-exchange membranes, allowing alkali-cation-free water to be used as a feed, with resulting stable operation.
- Xiaojie She
- Lingling Zhai
- Shu Ping Lau
