天津工业大学学报2019，Vol.38Issue(1)：39-44,6.DOI:10.3969/j.issn.1671-024x.2019.01.008
电解质离子尺寸对超级电容器电化学性能的影响
Influence of size of electrolyte ion on the electrochemical performance of supercapacitor
摘要
Abstract
In order to study the influence of the size of electrolyte ions on the electrochemical performance of supercapacitor electrolyte, two kinds of electrolytes, N, N-dimethylpyrrolidinium tetrafluoroborate (P11-BF4) , N-ethyl-Nmethylpyrrolidinium tetrafluoroborate (P12-BF4) , are synthesized. The electrolyte salts were arranged into propylene carbonate (PC) with the concentration of 1 mol/L. The influence of the size of electrolyte ion on the electrochemical performance of activated carbon based supercapacitors were investigated by cyclic voltammetry, constant current charge-discharge and AC impedance spectroscopy. The results show that both the electrolyte ion size and cation symmetry affect the discharge specific capacitance of the supercapacitors. The smaller the electrolyte ion size is, the better the voltage withstanding characteristic of the electrolyte is, and the higher the working voltage of the supercapacitor is. The size of the electrolyte ion and the symmetry of the cation affect the electrochemical performance of the supercapacitors.关键词
电解质离子/超级电容器/电解液/离子尺寸/电化学性能Key words
electrolyte ion/supercapacitors/electrolyte/ion size/electrochemical performance分类
信息技术与安全科学引用本文复制引用
武长城,吴宝军,段建,时志强..电解质离子尺寸对超级电容器电化学性能的影响[J].天津工业大学学报,2019,38(1):39-44,6.基金项目
国家自然科学基金资助项目(51603147) （51603147）
天津市自然科学基金资助项目(15ZCZDGX00270、14RCHZGX00859) （15ZCZDGX00270、14RCHZGX00859）
