Electrochemical CO2 reduction in water at carbon cloth electrodes functionalized with a fac-Mn(apbpy)(CO)3Br complex

Abstract

The organometallic complex (fac-Mn(apbpy)(CO)₃Br) (apbpy = 4-(4-aminophenyl)-2,2′-bipyridine) grafted electrochemically onto carbon cloth serves as an electrocatalyst in the aqueous reduction of CO₂ to syngas. A faradaic efficiency of around 60% for CO and 40% for H₂ at −1.35 V is achieved together with a productivity rate higher than 870 Nl_CO h⁻¹ g_Mn⁻¹ at turnover numbers of up to 33 200 during 10 hours of operation.