ChemSusChem 2018-04-14

Simple Cadmium Sulfide Compound with Stable 95 % Selectivity for Carbon Dioxide Electroreduction in Aqueous Medium

Yu Hang Li; Ling Cheng; Peng Fei Liu; Le Zhang; Meng Yang Zu; Chong Wu Wang; Yan Huan Jin; Xiao Ming Cao; Hua Gui Yang; Chunzhong Li

Index: 10.1002/cssc.201800372

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Abstract

A simple cadmium sulfide nanomaterial is found to be an efficient and stable electrocatalyst for CO2 reduction in aqueous medium for more than 40 h with a steady CO faradaic efficiency of approximately 95 %. Moreover, it can realize a current density of −10 mA cm−2 at an overpotential of −0.55 V on a porous substrate with similar selectivity. Theoretical and experimental results confirm that the high selectivity for CO2 reduction is due to its (0 0 0 2) face with sulfur vacancies that prefers CO2 molecule reduction in aqueous medium.

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