Local reaction environment for selective electroreduction of carbon monoxide
Local OH⁻ concentration near the cathode surface is shown to drive acetate formation via a homogeneous solution reaction, enabling up to 50% acetate faradaic efficiency within a >90% total C2+ selectivity. CO2 capture rate serves as a simple proxy for local pH in GDE-based CO reduction, linking both local pH and CO availability to C2+ product distribution.