Electrocatalytic CO2 Reduction to Alcohols with High Selectivity over a Two-Dimensional Fe2P2S6 Nanosheet

Electrochemical conversion of CO 2 into alcohols provides an attractive path toward achieving a carbon-neutral cycle, while its efficiency is challenged by identifying active electrocatalysts for the CO 2 reduction reaction (CO 2 RR). In this work, we report the Fe 2 P 2 S 6 nanosheet acts as an efficient CO 2 RR electrocatalytst toward highly selective hydrogenation of CO 2 to alcohols. This catalyst is capable of achieving a high total Faradaic efficiency (FE methanol+ethanol ) of 88.3%, with a FE methanol up to 65.2% at −0.20 V vs the reversible hydrogen electrode in 0.5 M KHCO 3 solution, much higher than most reported CO 2 RR electrocatalysts. Density functional theory calculations indicate that Fe atom on the Fe 2 P 2 S 6 surface can be regared as the active site for alcohol formation.