化工进展2024，Vol.43Issue(9)：4892-4899,8.DOI:10.16085/j.issn.1000-6613.2023-1305
多孔炭修饰的吸附催化一体化电极高效电解碳酸氢盐
Catalytic adsorption integrated electrode modified by porous carbon for efficient electrolysis of bicarbonate
摘要
Abstract
Electrolytic bicarbonate conversion that can avoid the energy-intensive steps(CO2 desorption)has attracted particular interest.However,the rapid escape of CO2 generated in the electrode leads to the insufficient participation of CO2 in the reaction and the low utilization rate of CO2.In this study,active carbon(AC)was used as an adsorption layer to modify the electrode.AC was mixed with CO2 catalytic material Ag to construct an catalytic adsorption integrated electrode(AC+Ag),Which effectively regulated the pore structure of the gas diffusion electrode.And it explored the influence of CO2 adsorption characteristics of different carbon materials on the performance during the electrolytic bicarbonate conversion.When Ag∶AC was 4∶1,Ag NPs loading was 2mg/cm2 and Nafion content was 3.04%,the AC+Ag electrode obtained the highest Faraday efficiency of CO.The FECO reached 59.02%and 53.79%at 100mA/cm2 and 200mA/cm2,respectively.The stability test showed that the electrode can stable convert bicarbonate to CO for 11h.Besides,a high CO2 utilization rate of 68.61%was obtained.This study proved that the AC-modified catalytic adsorption integrated electrode can effectively adsorb CO2 in the electrolytic bicarbonate conversion and improve the electrochemical performance.关键词
电化学还原CO2/原位还原CO2/电解碳酸氢盐/电极结构/一体化电极Key words
electrochemical reduction of CO2/in situ reduction of CO2/electrolytic bicarbonate/electrode structure/integrated electrode分类
信息技术与安全科学引用本文复制引用
王正峰,谢雨杭,李伟科,范永春,康钟尹,付乾..多孔炭修饰的吸附催化一体化电极高效电解碳酸氢盐[J].化工进展,2024,43(9):4892-4899,8.基金项目
重庆市杰出青年科学基金(cstc2019jcyjjqX0020). （cstc2019jcyjjqX0020）
