An asymmetric electric double-layer capacitor with a janus membrane and two different aqueous electrolytes

被引:18
作者
Liang, Na [1 ]
Ji, Yongsheng [1 ]
Xu, Jing [1 ]
Zuo, Danying [1 ]
Chen, Dongzhi [1 ]
Zhang, Hongwei [1 ]
机构
[1] Wuhan Text Univ, Coll Mat Sci & Engn, Wuhan 430073, Hubei, Peoples R China
关键词
Asymmetric EDLC; Janus membrane; Aqueous electrolyte; Specific energy; Voltage; HIGH-ENERGY-DENSITY; EXCHANGE MEMBRANES; SUPERCAPACITORS; CARBON; PERFORMANCE;
D O I
10.1016/j.jpowsour.2019.03.053
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
An asymmetric aqueous electric double-layer capacitor is presented, which consists of two activated carbon electrodes, a compact Janus membrane with sulfonated polystyrene and quaternized polystyrene, aqueous acidic and alkaline electrolyte solutions. The carbon-based aqueous supercapacitor can not only run at a high cell voltage of 2.2 V, but also deliver a specific energy of 20.06 Wh kg(-1). Moreover, such a supercapacitor with specific energy of 40-50 Wh kg(-1) can be predicted after further optimization.
引用
收藏
页码:68 / 71
页数:4
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