有机添加剂对超级电容器中水系电解液理化性能的影响

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刘桐桐^1,2，王凯^1,2，陈永修^1,2，韩永生^1,2*

1. 中国科学院过程工程研究所多相复杂系统国家重点实验室，北京 1001902. 中国科学院大学化工学院，北京 100049

收稿日期:2019-01-21修回日期:2019-04-03出版日期:2019-12-22发布日期:2019-12-22
通讯作者:韩永生

基金资助:高芳烃高含氮重油催化转化反应基础研究;高芳烃高含氮重油催化转化反应基础研究;石油联合基金

Effect of organic additives on the electrochemical performance of aqueous electrolyte in supercapacitors

Tongtong LIU^1,2, Kai WANG^1,2, Yongxiu CHEN^1,2, Yongsheng HAN^1,2*

1. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China2. School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2019-01-21Revised:2019-04-03Online:2019-12-22Published:2019-12-22

摘要/Abstract

摘要： 以6 mol/L KOH水溶液为电解液，高比表面积的活性炭为活性物质，研究了有机添加剂对体系润湿性、电导率、工作电压窗口及阻抗的影响，测试了超级电容器的电化学性能。结果表明，适量添加有机添加剂可明显抑制体系的极化现象，提高超级电容器的工作电压窗口。添加10vol%异丙醇时，电极材料和电解液间的润湿性大幅提高，比电容从79.3 F/g提高至113.2 F/g。添加20vol%异丙醇时，超级电容器的能量密度达19.4 Wh/kg，体系的电荷转移电阻明显降低，在10 A/g电流密度下的比电容比0.5 A/g时下降13.9%，而不加添加剂时下降30.3%。添加30vol%异丙醇时，电解液电导率迅速下降，比电容降低，电导率是影响比电容的关键因素。

引用本文

刘桐桐王凯陈永修韩永生. 有机添加剂对超级电容器中水系电解液理化性能的影响[J]. 过程工程学报, 2019, 19(6): 1242-1249.
Tongtong LIU Kai WANG Yongxiu CHEN Yongsheng HAN. Effect of organic additives on the electrochemical performance of aqueous electrolyte in supercapacitors[J]. Chin. J. Process Eng., 2019, 19(6): 1242-1249.

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