CO2 electroreduction in acidic electrolytes avoids carbon loss but entails the issue of salt formation arising from the addition of metal cations, thereby limiting operational stability. Now copper is decorated with immobilized cationic ionomers, achieving stable CO2 reduction towards multi-carbon products in metal cation-free acidic electrolytes.
- Mengyang Fan
- Jianan Erick Huang
- David Sinton
