posted on 2019-09-29, 12:29authored byLei Ji, Le Chang, Ya Zhang, Shiyong Mou, Ting Wang, Yonglan Luo, Zhiming Wang, Xuping Sun
Electrochemical conversion
of CO2 into alcohols provides
an attractive path toward achieving a carbon-neutral cycle, while
its efficiency is challenged by identifying active electrocatalysts
for the CO2 reduction reaction (CO2RR). In this
work, we report the Fe2P2S6 nanosheet
acts as an efficient CO2RR electrocatalytst toward highly
selective hydrogenation of CO2 to alcohols. This catalyst
is capable of achieving a high total Faradaic efficiency (FEmethanol+ethanol) of 88.3%, with a FEmethanol up to 65.2% at −0.20
V vs the reversible hydrogen electrode in 0.5 M KHCO3 solution,
much higher than most reported CO2RR electrocatalysts.
Density functional theory calculations indicate that Fe atom on the
Fe2P2S6 surface can be regared as
the active site for alcohol formation.