Acta Phys. -Chim. Sin. ›› 2016, Vol. 32 ›› Issue (1): 261-266.doi: 10.3866/PKU.WHXB201512101

• ARTICLE • Previous Articles     Next Articles

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*()   

  • Received:2015-11-24 Published:2016-01-13
  • Contact: Bu-Xing HAN E-mail:hanbx@iccas.ac.cn
  • Supported by:
    the National Natural Science Foundation of China(21403253, 21533011, 2132106)

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.

Key words: Copper(I) sulfide, Copper foam, Formic acid, Electrochemistry, CO2 reduction

MSC2000: 

  • O646