A novel polymeric gel electrolyte systems containing magnesium salt with ionic liquid
A novel polymeric gel electrolyte systems containing magnesium salt with ionic liquid
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DOI：
10.1016/j.electacta.2005.02.036
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发表时间：
2005-06
影响因子：
6.6
通讯作者：
N. Yoshimoto;T. Shirai;M. Morita
中科院分区：
文献类型：
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作者：
N. Yoshimoto;T. Shirai;M. Morita
以聚氧乙烯改性聚甲基丙烯酸酯（PEO-PMA）和溶解镁盐的有机离子液体Mg[（CF_3SO_2）_2N]_2为原料，制备了一种新型的聚合物凝胶电解质体系。研究了凝胶膜的离子电导和电化学性能。所获得的凝胶膜是自立的、透明的和柔性的，具有足够的机械强度。凝胶膜的热分析表明，它是均匀的，在很宽的温度范围内无定形。最高的电导率，CA。在60°C下，对于含有80 wt.%由80摩尔%的EMITFSI（1-乙基-3-甲基咪唑鎓双（三氟甲基磺酰基）酰亚胺）和20摩尔%的Mg[（CF 3SO 2）2N]2组成的液体组分。离子液体的种类对凝胶的离子电导率影响较大。Pt/聚合物凝胶电解质/Mg电池的直流极化证明了镁离子（Mg 2+）在聚合物凝胶体系中具有移动的特性。
A new polymeric gel electrolyte system consisting of poly(ethylene oxide)-modified polymethacrylate (PEO–PMA) with organic ionic liquid dissolving magnesium salt, Mg[(CF3SO2)2N]2, has been developed. The ionic conductance and electrochemical properties of the gel films were investigated. The obtained gel film was self-standing, transparent and flexible with sufficient mechanical strength. Thermal analysis of the gel film showed that it is homogeneous and amorphous over a wide temperature range. The highest conductivity, ca. 3.5mScm−1at 60°C, was obtained for the polymeric gel containing 80wt.% of the liquid component that consists of 80mol% of EMITFSI (1-ethyl-3-methylimidazolium bis(trofluoromethylsulfonyl)imide) and 20mol% of Mg[(CF3SO2)2N]2. The sort of the ionic liquid affected much on the ionic conductivity of the gel. The dc polarization of a Pt/polymeric gel electrolyte/Mg cell proved that the magnesium ion (Mg2+) can mobile in the present polymeric gel system.