高校化学工程学报2016，Vol.30Issue(5)：1164-1170,7.DOI:10.3969/j.issn.1003-9015.2016.05.026
电解CO2储存可再生电能的N-甲基吡咯烷酮/四丁基高氯酸铵电解液研究
Electrochemical Reduction of CO2 in N-Methyl Pyrrolidone/Tetrabutylammonium Perchlorate Electrolyte for Renewable Electrical Energy Storage
摘要
Abstract
CO2 conversion into methanol is considered as a promising route for CO2 recycling as methanol is a liquid fuel and fundamental chemical in the chemical industry. In this work, a novel two-chamber electrolysis cell was proposed for electrochemical reduction of CO2 into CO in N-Methyl pyrrolidone (NMP)/tetrabutylammonium perchlorate (TBAP) electrolyte using renewable electricity as the external electrical energy supply. The obtained CO can then react with H2 to produce methanol. Cyclic voltammogram curves indicate that CO2 reduction happens on Au electrode. The potentiostatic electrolysis curve shows that the current density reaches to 6.6 mA . cm-2. The gas chromatogram results show that the main gaseous product is CO, and the highest Faradaic efficiency of CO is 93%. H2 is evolved due to the presence of H2O in the catholyte. SEM results indicate that no adsorbate is observed on the surface of the Au electrode. During long term electrolysis processes, the electrolyte keeps stable, and the cathode exhibits high activity towards CO2 reduction. The electrochemical reduction of CO2 into CO in NMP/TBAP electrolyte is promising for industrial applications.关键词
可再生电能/双室电解池/CO2电催化还原/电能储存/有机电解液Key words
renewable electricity/two-chamber electrolysis cell/electrocatalytic reduction of CO2/electric energy storage/organic solvent electrolyte分类
化学化工引用本文复制引用
李青远,李露,杨冬伟,王琴,沈风霞,施锦..电解CO2储存可再生电能的N-甲基吡咯烷酮/四丁基高氯酸铵电解液研究[J].高校化学工程学报,2016,30(5):1164-1170,7.基金项目
国家自然科学基金(51164020)。 （51164020）
