Ionic Transport and Electrochemical Stability of PVDF-HFP Based Gel Polymer Electrolytes

被引：15
|
作者：
Rosdi, A. [1 ]
Zainol, N. H. [1 ]
Osman, Z. [1 ]
机构：
[1] Univ Malaya, Fac Sci, Dept Phys, Kuala Lumpur 50603, Malaysia
来源：
INTERNATIONAL SYMPOSIUM ON FRONTIER OF APPLIED PHYSICS (ISFAP) 2015 | 2016年 / 1711卷
关键词：
TRANSFERENCE NUMBER; BATTERIES; CONDUCTIVITY; LITHIUM; SYSTEMS; SALT;
D O I：
10.1063/1.4941629
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The gel polymer electrolytes (GPEs) samples consisting of polyvinylidenefluoride-co-hexafluoropropylene (PVDF-HFP), ethylene carbonate (EC) and propylene carbonate (PC) with different concentrations of magnesium triflate salt, Mg(CF3SO3)(2) were prepared using the solution casting technique. The ionic conductivity of the GPEs was studied by using a.c impedance spectroscopy and the sample containing 20 wt% salt exhibited the highest conductivity of 5.11 x 10(-3) Scm(-1). Ionic transport number of the GPEs shows that the samples contain ionic species as main charge carrier while cationic transport number for the highest conducting sample was found to be 0.27. The electrochemical properties of the GPEs were studied using Linear Sweep Voltammetry (LSV) and Cyclic Voltammetry (CV). The GPEs show high electrochemical stability similar to 3.5V (versus Mg2+/Mg) where the highest conducting sample exhibited the highest stability.
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页数：6
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