摘要
以水性聚氨酯(WPU)-聚二甲基硅氧烷(PDMS)共混体系为聚合物基体,通过添加不同质量分数的高氯酸锂(LiClO4)得到一系列固态聚合物电解质。交流阻抗测试结果显示,当LiClO4质量分数为15%时体系电导率最高,并且温度与电导率关系基本符合Arrhenius方程。采用傅立叶红外光谱(FT-IR)对聚合物电解质中锂离子与羟基及醚氧基之间的相互作用分析显示,当LiClO4质量分数为15%时,锂离子与羰基及醚氧基的配位作用均达到饱和状态。拉曼光谱(Raman)研究结果表明,该聚合物体系对盐具有较好的溶解能力,增加盐浓度后,可使体系中有效离子的相对比例增加,有利于离子传输。
A series of novel polymer/salt complexes, based on the blends of waterborne polyurethane （WPU） and polysiloxane （PDMS） as polymer matrix and lithium pechlorate（LiClO4） as doped salt, were prepared successfully. The ac impedance results show the sample with LiClO4 15% possesses the highest ionic conductivity and the relationship between the ionic conductivity and temperature could be probably described by the Arrhenius equation. FT-IR spectra was used to analyze the interaction of Li^＋ cation with carbonyl and ether groups. When the salt concentration reached 15%, the coordination of Li^＋ cation with carbonyl and ether groups gets to the maximum. The Raman spectra results show that the polymer host had a good solvation ability for LiClO4. The effective ionic species increased with increasing salt concentration and it was benefit for ion conduction.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2009年第1期26-29,共4页
Journal of Functional Materials
基金
国家重点基础研究发展计划(973计划)资助项目(2002CB211800)
国家高技术研究发展计划(863计划)资助项目(2007AA03Z226)
