Cu2S on Cu Foam as Highly Efficient Electrocatalyst for Reduction of CO2 to Formic Acid
Qing-Gong ZHU,Xiao-Fu SUN,Xin-Chen KANG,Jun MA,Qing-Li QIAN,Bu-Xing HAN. Cu2S on Cu Foam as Highly Efficient Electrocatalyst for Reduction of CO2 to Formic Acid[J]. Acta Physico-Chimica Sinica, 2016, 32(1): 261-266. DOI: 10.3866/PKU.WHXB201512101
Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
Abstract:
The electrocatalytic reduction of CO2 to HCOOH is an interesting topic and the efficiency usually depends strongly on the materials of the electrodes. Herein, nanostructured Cu2S on Cu-foam was prepared by electro-deposition method and characterized by means of scanning electron microscope (SEM) and X-ray diffraction (XRD). The Cu2S/Cu-foam electrode was used for the first time in the electrocatalytic reduction of CO2 to HCOOH, and acetonitrile (MeCN) with 0.5 mol·L-1 1-butyl-3-methylimidazolium tetrafluoroborate (BmimBF4) was used as the electrolyte. It was demonstrated that the electrolysis system was very efficient for the electrochemical reaction, and faradaic efficiency of HCOOH (FEHCOOH) and reduction current density could reach 85% and 5.3 mA·cm-2, respectively.
