摘要
以高压静电纺丝法制备了具有微孔结构的偏氟乙烯-六氟丙烯共聚物[P(VDF-HFP)]无纺布膜,吸附离子液体3-乙基-1-甲基咪唑鎓四氟硼酸盐(EMIBF4)后成为凝胶聚合物电解质,其室温离子电导率达到8.43mS·cm-1,初始热失重温度超过300℃.以其为聚合物电解质的活性碳电极双电层电容器具有较好的电化学性能,1.0mA·cm-2恒流充放电500次循环后仍保持90.67F·g-1的比容量,容量保持率为96.86%.
Non-woven membranes based on poly（vinylidene fluoride-co-hexafluoropropylene） [P（VDF- HFP）] copolymer which contain microporous structure have been prepared by electrospinning method. The resulting polymer-ionic liquid electrolytes P（VDF-HFP）/EMIBF4 possess an ionic conductivity of 8.43 mS·cm^-1 at room temperature and high temperature for initial weight losing over 300℃. The electric double-layer capacitors, applying the polymer-ionic liquid electrolytes as separator, were fabricated and tested. It exhibits excellent electrochemical properties, such as maintaining a specific capacity of 90.67 F·g^-1 even after 500 cycles at 1.0 mA·cm^-2 constant current charge-discharge and enjoying the cycling efficiency of 96.86%.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2007年第11期1007-1011,共5页
Acta Chimica Sinica
基金
湖南省科技厅(No.05JT1046)
湘潭市科技局(No.GY2005-6)资助项目
关键词
离子液体
静电纺丝
聚合物电解质
双电层电容器
离子电导率
ionic liquid
electrospinning
polymer electrolyte
electric double-layer capacitor
ionic conductivity
