Moving towards renewable energy sources requires pathways for efficiently converting electricity to chemicals, and gas-fed CO2 electrolysers show promise. Now, the layer-by-layer assembly of a weak-acid cation exchange layer has been shown to affect the local pH in a bipolar-membrane-based gas-fed CO2 electrolyser, improving the conversion efficiency of CO2 to CO by suppressing the competing hydrogen evolution reaction.
- Zhifei Yan
- Jeremy L. Hitt
- Thomas E. Mallouk
