摘要
以活性炭作活性物质,用循环伏安、交流阻抗等方法测试了乙腈及碳酸丙烯酯的1mol/L高氯酸锂溶液(1mol/L的LiClO4/AN和LiClO4/PC)作电解液的超级电容器性能,根据乙腈电解液内阻小、比容量大、碳酸丙烯酯电解液循环和保压性能优秀的特性,将2种电解液混合,测试了混合电解液的电导率,等体积比混合的混合电解液(1mol/L的LiClO4/AN+PC)电导率达15.8mS/cm2.应用于超级电容器后,大电流放电性能和比容量与LiClO4/AN电解液体系接近,而在循环性能、漏电流和电压保持能力方面较之有大幅提高.
Using activated carbon as electrode materials, cyclic voltammograms, alternating current resistance, et al of the capacitors with electrolyte of 1mol/L perchloride lithium in acetonitrile(LiClO4/AN)and 1mol/L perchloride lithium in propylene carbonate(LiClO4/PC)are tested. The results show that both of the two electrolyte has its advantage and shortage,and the equal volume mixture of them has the conductivity of about 15.8mS/cm2.After we utilizing the mixture in double-layer capacitor. Properties such as conductivity and capacitance value are good as well as LiClO4/AN electrolyte, and charge-rechargeable capability and voltage sustainability are better than it. It is concluded that the mixture electrolyte is suitable for supercapacitor.
出处
《应用科技》
CAS
2005年第2期62-64,共3页
Applied Science and Technology
关键词
电解液
混合
电导率
比容量
超级电容器
electrolyte
mixture
conductivity
capacitance value
double-layer capacitor
