Effect of aging on the ionic conductivity of polyvinylidenefluoride-hexafluoropropylene (PVdF-HFP) membrane impregnated with different lithium salts

被引：8
|
作者：
Aravindan, V. [1 ,2 ]
Vickraman, P. [1 ]
机构：
[1] Gandhigram Rural Univ, Dept Phys, Gandhigram 624302, Tamil Nadu, India
[2] Nanyang Technol Univ, Energy Res Inst ERI N, Singapore 637553, Singapore
来源：
INDIAN JOURNAL OF PHYSICS | 2012年 / 86卷 / 05期
关键词：
Lithium batteries; Polymeric membranes; Phase inversion; PVdF-HFP; Ionic conductivity; COMPOSITE POLYMER ELECTROLYTES; PHASE-SEPARATION; BATTERIES; LIBOB;
D O I：
10.1007/s12648-012-0078-2
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The aging towards the ionic conductivity have been studied using of different lithium salts namely, lithium bis(oxalate)borate (LiBOB), lithium difluoro(oxalato)borate (LiDFOB), lithium fluoroalkylphosphate (LiFAP) and LiPF6 in polyvinylidenefluoride-hexafluoropropylene (PVdF-HFP) matrix. The crystallization behavior of LiBOB and LiDFOB has been noticed for the first time during storage of such membranes within the texture of PVdF-HFP matrix. At the same time, such behavior has not been observed in the case of LiFAP and LiPF6 based membranes. The growth of such crystallites would certainly hinder the mobility mechanism of Li+ ions and it has been confirmed by ionic conductivity measurements. The formation of such crystals has been validated through scanning electron microscopic studies.
引用
收藏
页码：341 / 344
页数：4
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