电化学2022，Vol.28Issue(1)：30-38,9.DOI:10.13208/j.electrochem.210423
一种用于电还原CO2生成甲酸的高性能连续流动式MEA反应器
A High-Performance Continuous-Flow MEA Reactor for Electroreduction CO2 to Formate
摘要
Abstract
The electrochemical carbon dioxide reduction reaction (CO2RR) is a promising approach to produce liquid fuels and industrial chemicals by utilizing intermittent renewable electricity for mitigating environmental problems.However,the traditional H-type reactor seriously limits the electrochemical performance of CO2RR due to the low CO2 solubility in electrolyte,and high ohmic resistance caused by the large distance between two electrodes,which is unbeneficial for industrial application.Herein,we demonstrated a high-performance continuous flow membranes electrode assembly (MEA) reactor based on a self-growing Cu/Sn bimetallic electrocatalyst in 0.5 mol· L-1 KHCO3 for converting CO2 to formate.Compared with an H-type cell,the MEA reactor not only shows the excellent current density (66.41 mA· cm2 at-1.11 VRHE),but also maintains high Faraday efficiency of formate(89.56％) with the steady work around 20 h.Notably,we also designed the new CO2RR system to effectively separate the gaseous/liquid production.Surprisingly,the production rate of formate reached 163 μmol· h-1· cm-2 at-0.91 VRHE with the cell voltage of 3.17 V.This study provides a promising path to overcome mass transport limitations of the electrochemical CO2RR and to sepa-rate liquid from gas products.关键词
电化学还原/二氧化碳/流动式MEA反应器/电解槽Key words
electrochemical reduction/carbon dioxide/flow MEA reactor/electrolyzer引用本文复制引用
刘佩璇,彭芦苇,何瑞楠,李露露,乔锦丽..一种用于电还原CO2生成甲酸的高性能连续流动式MEA反应器[J].电化学,2022,28(1):30-38,9.基金项目
The authors thank the "Scientific and Technical Inno-vation Action Plan" Basic Research Field of Shanghai Science and Technology Committee (19JC1410500),the financial support from the National Natural Sci-ence Foundation of China (91645110),the Fundamen-tal Research Funds for the Central Universities(2232018A3-06). （19JC1410500）
