A divalent quaternary alkyl ammonium salt as the electrolyte for high-energy electric double-layer capacitors

被引：7
作者：
Zheng, Cheng [1 ,2 ]
Yoshio, Masaki [3 ]
Qi, Li [1 ]
Wang, Hongyu [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
[3] Saga Univ, Adv Res Ctr, Saga 8400047, Japan
来源：
JOURNAL OF POWER SOURCES | 2012年 / 220卷
基金：
中国国家自然科学基金;
关键词：
1,1,4,4-Tetramethyl piperazine; Quaternary alkyl ammonium; Propylene carbonate; Micro-porous carbon; Meso-porous carbon; Electric double-layer capacitors; ONIUM SALTS; AC/GRAPHITE; PERFORMANCE; CATION;
D O I：
10.1016/j.jpowsour.2012.07.014
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：
A divalent electrolyte salt based on 1,1,4,4-tetramethyl piperazine has been synthesized and applied in electric double-layer capacitors (EDLCs). Traits of the divalent salts have been accessed as well as monovalent quaternary alkyl ammonium salts by the means of galvanostatic charge-discharge tests and ionic conductivity measurements. Compared with monovalent salts, the divalent salts do enlarge the charge storage ability of EDLCs remarkably. However, highly concentrated charge density on the divalent cation has a strong interaction with the organic solvent of propylene carbonate. The adverse effect of this heavy solvation on the performance of EDLCs has been investigated. Moreover, the influence of pore size distribution on the storage ability of these cations at the porous carbon electrode has been addressed. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：169 / 172
页数：4
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