N,N-二甲基-N-乙基金刚烷铵四氟硼酸盐的制备及其在超级电容器中的应用

Preparation of N-ethyl-N,N-dimethylamantadine tetrafluoroborate and its application in supercapacitors

为了拓宽超级电容器的工作电压,我们以1-金刚烷胺为母体,通过简单的烷基化及离子交换反应制备得到新型的电解质盐:N,N-二甲基-N-乙基金刚烷铵四氟硼酸盐,并结合常用的碳酸丙烯酯(PC)溶剂,开发了一种新型的超级电容器电解液.以VFT方程对其电导率的温度依赖性进行了描述.除此之外,还使用循环伏安法,交流阻抗谱,恒流充放电测试等方法系统研究了该电解液的电化学性能.结果发现VFT方程适用于该体系的电导率拟合,而且,电解液具有电化学窗口宽,电导率高,循环寿命长,充放电效率高等诸多优点.通过实验证明这种新型的金刚烷胺类电解液是一种适用于超级电容器的电解液.

In order to broaden the operating voltage of the supercapacitors,we prepared a new type of electrolyte salt N,N-dimethyl-N-ethyladamantanium tetrafluoroborate by 1-adamantanamine precursor and simple alkylation and ion exchange reaction. And then we prepared a novel electrolyte of supercapacitors combined with common propylene carbonate（ PC） solvent. The temperature dependence of the conductivity of the electrolyte was described by the VFT equation. In addition,the electrochemical performance of the electrolyte was systematically studied by using cyclic voltammetry,alternating current impedance spectroscopy,and galvanostatic charge-discharge tests. We found that the VFT equation was suitable for the electrical conductivity fitting of the system,and the electrolyte has many advantages such as wide electrochemical window,high electrical conductivity,long cycle life,and high charge-discharge efficiency. Experiments show that this new type of amantadine electrolyte is a suitable electrolyte for supercapacitors.