The use of membrane electrode assembly electrolyzers in a neutral electrolyte offer potential for large-scale CO2 reduction to multicarbon products, but progress is hindered by low selectivity and unclear reaction mechanisms. Here, the authors regulate the interfacial microenvironment of Cu to stabilize Cuδ + -OH active species for selective C2H4 production.
- Lei Wang
- Zhiwen Chen
- Yimin A. Wu
