活性炭在室温熔盐电解质中的电容特性  

Capacitance characteristics of activated carbon in room temperature molten salt electrolyte

作　　者：包丽颖[1] 吴锋[1] 陈实[1] 王国庆[1] 

机构地区：[1]北京理工大学化工与环境学院,北京100081

出　　处：《现代化工》2009年第S1期254-256,258,共4页Modern Chemical Industry

基　　金：国家重点基础研究发展计划(2002CB211800)资助

摘　　要：制备了热稳定性高、电化学性能良好的室温熔盐高氯酸锂(LiClO4)-1,3-氮氧杂环戊-2-酮(OZO),对其作为电解质材料在活性炭电化学电容器中的应用进行了研究。恒流充放电和循环伏安测试表明,活性炭电极与该类室温熔盐电解质表现出良好的电化学兼容性,比电容达到55.2F/g,并具有良好的循环性能,循环充放电760次后容量损失小于5%。结合室温熔盐不宜燃、不挥发等特性,表明其是超级电容器非常有前景的新型电解液。A binary room temperature molten salt (RTMS) has been synthesized based on lithium perchlorate (LiClO4) with 2-oxazolidinone (C3H5NO2,OZO).The capacitance characteristics of activated carbon in RTMS electrolyte are investigated.Galvanostatic charge/discharge and cyclic voltammetry (CV) measurements show the favorable electrochemical compatibility between the activated carbon electrodes and RTMS electrolyte.A high specific capacitance of 55.2 F/g estimated by galvanostatic discharge is obtained.The test cells also show a practical good level of durability over cycles of charge and discharge.After 760 cycles of charge and discharge,the capacity loss can be less than 5% of the initial discharge capacity.Considering a number of excellent properties such as noninflammable and negligible vapor pressure of it,the RTMS demonstrates itself a promising electrolyte candidate for supercapacitors.

关 键 词：活性炭 室温熔盐 电解质 电容器 

分 类 号：TM53[电气工程—电器]