A Flexible Ionic Liquid Gelled PVA-Li2SO4 Polymer Electrolyte for   Semi-Solid-State Supercapacitors

doi:10.1002/admi.201500267

CORC > 北京大学 > 化学与分子工程学院

	A Flexible Ionic Liquid Gelled PVA-Li2SO4 Polymer Electrolyte for Semi-Solid-State Supercapacitors
	Zhang, Xing ; Wang, Liangliang ; Peng, Jing ; Cao, Pengfei ; Cai, Xiaosheng ; Li, Jiuqiang ; Zhai, Maolin
刊名	ADVANCED MATERIALS INTERFACES
	2015
关键词	1-butyl-3-methylimidazolium chloride flexible gel polymer electrolytes freeze-drying methods lithium sulfate semi-solid-state supercapacitors DOUBLE-LAYER CAPACITORS PERFORMANCE GRAPHENE OXIDE NANOCOMPOSITES CONDUCTIVITY BATTERIES FILMS POWER
DOI	10.1002/admi.201500267
英文摘要	A novel high-performance flexible gel polymer electrolyte (FGPE) for supercapacitors is prepared by a freeze-drying method. In the presence of 1-butyl-3-methylimidazolium chloride (BMIMCl) ionic liquid, Li2SO4 can easily be added into poly(vinyl alcohol) (PVA) aqueous solution over a large concentration range. The resultant FGPE demonstrates considerably high ionic conductivity (37 mS cm(-1)) and a high fracture strain at 100% elongation at the optimal weight ratio of PVA:BMIMCl:Li2SO4 = 1:3:2.2. The supercapacitor fabricated with the resultant FGPE and activated carbon electrodes shows an electrode-specific capacitance of 136 F g(-1) with a stable operating voltage of 1.5 V, a maximum energy density of 10.6 Wh kg(-1), and a power density of 3400 W kg(-1). Double supercapacitors in series can efficiently drive a light emitting diode (LED) bulb for over 5 min and the retention of the specific capacitance reaches 90% even after 3000 charge-discharge cycles. The ionic conductivity and charge-discharge behaviors of the resultant FGPE are not affected by bending up to 180 degrees. The flexible supercapacitor device shows only a small capacitance loss of 18% after 1000 cycles of 135 degrees bending.; National Natural Science Foundation of China [11375019]; SCI(E); ARTICLE; mlzhai@pku.edu.cn; 15; 2
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/415708]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Zhang, Xing,Wang, Liangliang,Peng, Jing,et al. A Flexible Ionic Liquid Gelled PVA-Li2SO4 Polymer Electrolyte for Semi-Solid-State Supercapacitors[J]. ADVANCED MATERIALS INTERFACES,2015.
APA	Zhang, Xing.,Wang, Liangliang.,Peng, Jing.,Cao, Pengfei.,Cai, Xiaosheng.,...&Zhai, Maolin.(2015).A Flexible Ionic Liquid Gelled PVA-Li2SO4 Polymer Electrolyte for Semi-Solid-State Supercapacitors.ADVANCED MATERIALS INTERFACES.
MLA	Zhang, Xing,et al."A Flexible Ionic Liquid Gelled PVA-Li2SO4 Polymer Electrolyte for Semi-Solid-State Supercapacitors".ADVANCED MATERIALS INTERFACES (2015).