摘要
Electrocatalytic reduction of CO_2 is a promising route for energy storage and utilization. Herein we synthesized SnO_2 nanosheets and supported them on N-doped porous carbon (N-PC) by electrodeposition for the first time. The SnO_2 and N-PC in the SnO_2@N-PC composites had exellent synergistic effect for electrocatalytic reduction of CO_2 to HCOOH. The Faradaic efficiency of HCOOH could be as high as 94.1% with a current density of 28.4 mA cm-2 in ionic liquid-MeCN system. The reaction mechanism was proposed on the basis of some control experiments. This work opens a new way to prepare composite electrode for electrochemical reduction of CO_2.
Electrocatalytic reduction of CO2 is a promising route for energy storage and utilization. Herein we synthesized SnO2 nanosheets and supported them on N-doped porous carbon （N-PC） by electrodeposition for the first time. The SnO2 and N-PC in the SnO2@N-PC composites had exellent synergistic effect for electrocatalytic reduction of CO2 to HCOOH. The Faradaic efficiency of HCOOH could be as high as 94.1% with a current density of 28.4 mA cm-2 in ionic liquid-MeCN system. The reaction mechanism was proposed on the basis of some control experiments. This work opens a new way to prepare composite electrode for electrochemical reduction of CO2.
基金
supported by the National Natural Science Foundation of China (21673248, 21533011)
the National Key Research and Development Program of China (2017YFA0403102)
Chinese Academy of Sciences (QYZDY-SSW-SLH013)
