Conductivity and thermal studies of blend polymer electrolytes based on PVAc-PMMA

被引：183
|
作者：
Baskaran, R.
Selvasekarapandian, S. [1 ]
Kuwata, N.
Kawamura, J.
Hattori, T.
机构：
[1] Bharathiar Univ, Dept Phys, Solid State & Radiat Phys Lab, Coimbatore 641046, Tamil Nadu, India
[2] Tohoku Univ, Inst Multi Disciplinary Res Adv Mat, Sendai, Miyagi 980, Japan
来源：
SOLID STATE IONICS | 2006年 / 177卷 / 26-32期
关键词：
PVAc; blend polymers; ionic conductivity; DSC analysis; conductance spectra; polymer electrolytes; arrhenius behaviour;
D O I：
10.1016/j.ssi.2006.04.013
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：
The polymer electrolytes comprising blend of poly(vinyl acetate) (PVAc) and poly(methylmethacrylate) (PMMA) as a host polymer and LiClO4 as a dopant are prepared by solution casting technique. The amorphous nature of the polymer-salt complex has been confirmed by XRD analysis. The DSC then-nograms show two T-g's for PVAc-PMMA blend. A decrease in T-g with the LiClO4 content reveals the increase of segmental motion. Conductance spectra results are found to obey the Jonscher's power law and the maximum dc conductivity value is found to be 1.76 x 10(-3)S cm(-1) at 303K for the blend polymer complex with 20wt.% LiClO4, which is suitable for the Li rechargeable batteries. The conductivity-temperature plots are found to follow an Arrhenius nature. The dc conductivity is found to increase with increase of salt concentration in the blend polymer complexes. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：2679 / 2682
页数：4
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