摘要
研究了有机溶剂[乙腈(AN)、丙酮(Acet)]对离子液体1-乙基-3-甲基咪唑四氟硼酸盐[(EMIm)BF4]电导率和电化学性能的影响。混合电解液体系的电导率在离子液体与有机溶剂的摩尔比为4∶6时达最大值。循环伏安和恒流充放电测试结果表明,添加有机溶剂在很大程度上改善了电容器的电容特性。电容器的比电容在(EMIm)BF4与AN或Acet的摩尔比为4∶6时达最大值,分别为233,173F/g。
Influence of organic solvent [acetonitrile （AN） and acetone （Acet）] on the conductivity and electrochemical performance of ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate [（EMIm）BF4]were investigated. The conductivity of mixed electrolyte systems was influenced by the content of organic solvent, and the largest conductivity value occurred when the molar ratio of ionic liquid and organic solvent reach 4 ： 6. Cyclic voltammetry and galvanostatic charge/discharge measurement results indicate organic solvent could improve capacitance characteristic of EC to some extent. Specific capacitance of EC are changed with the content of organic solvent, and the largest specific capacitance occur at the molar ratio of 4 ： 6, and were 233, 173 F · g^-1, respectively.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2007年第9期39-42,共4页
Electronic Components And Materials
基金
国家自然科学基金资助项目(50272070)
关键词
电子技术
电化学电容器
离子液体
有机溶剂
比电容
electron technology
electrochemical capacitor（EC）
ionic liquid
organic solvent
specific capacitance
