Single-atom mediated crystal facet engineering for the exceptional production of acetate in CO electrolysis

CuCo 1 triangular sheets were successfully created by modifying Co single atoms on the exposed Cu(111) crystal face, and the CuCo 1 -based MEA enables exceptional CO-to-acetate selectivity of 72% and long-term stability at 600 mA cm −2 for 500 h.