Ionic liquid enhanced magnesium-based polymer electrolytes for electrical double-layer capacitors

被引：42
|
作者：
Francis, K. A. [1 ]
Liew, Chiam-Wen [2 ]
Ramesh, S. [2 ,3 ]
Ramesh, K. [2 ]
Ramesh, S. [2 ,3 ]
机构：
[1] Univ Malaya, Inst Postgrad Studies, Kuala Lumpur 50603, Malaysia
[2] Univ Malaya, Dept Phys, Fac Sci, Ctr Ion, Kuala Lumpur 50603, Malaysia
[3] Univ Malaya, Fac Engn, Kuala Lumpur 50603, Malaysia
来源：
IONICS | 2016年 / 22卷 / 06期
关键词：
Poly(vinyl alcohol); Ionic liquid; Mg(CF3SO3)(2); EDLC; Capacitance; ELECTROCHEMICAL CAPACITORS; PHYSICOCHEMICAL PROPERTIES; TEMPERATURE; SUPERCAPACITOR; CONDUCTION; PVA;
D O I：
10.1007/s11581-015-1619-4
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：
This paper describes the preparation and characterization of poly(vinyl alcohol) (PVA)-added ionic liquid-based ion conductors. The polymer electrolyte is incorporated with magnesium triflate [Mg(CF3SO3)(2) or MgTf] as salt and 1-butyl-3-methylimidazolium bromide (BmImBr) as ionic liquid. Differential scanning calorimetry (DSC) is carried out to investigate the glass transition temperature which is used to study the plasticizing effect of the ionic liquid. The highest conducting ionic liquid-based polymer electrolyte is used to fabricate electrical double-layer capacitors (EDLC). The electrochemical potential window is evaluated using linear sweep voltammetry (LSV). The electrochemical capacitance of the EDLC is evaluated through cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD). The electrochemical potential window of ionic liquid-added polymer electrolyte is extended from 1.35 to 2.6 V. Cyclic voltammetry (CV) proves the improvement in specific capacitance of the electrical double-layer capacitors (EDLCs) containing ionic liquid-added polymer electrolyte.
引用
收藏
页码：919 / 925
页数：7
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