Composite Polymeric Electrolytes from the PEODME−LiClO4−SiO2 System
Composite Polymeric Electrolytes from the PEODME−LiClO4−SiO2 System
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DOI：
10.1021/cm001178n
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发表时间：
2001-03
影响因子：
8.6
通讯作者：
D. Świerczyński;A. Zalewska;W. Wieczorek
中科院分区：
文献类型：
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作者：
D. Świerczyński;A. Zalewska;W. Wieczorek
结果表明，气相二氧化硅的加入到聚合物电解质的凝胶状聚合物材料的形成的结果。尽管这些复合系统的准固体结构，与液体基础聚（环氧乙烷）二甲醚（PEODME）-LiClO 4电解质相比，观察到复合系统的几种盐浓度的电导率增加。对于其它盐浓度，复合体系的电导率略高于或至少与未改性电解质的电导率相当。在最低盐浓度（例如，10-5 - 10-4 mol/kg PEODME）时，PEODME-LiClO 4电解质的电导率较高。这种电导率的增加与离子对分数的减少有关，如FT-IR实验和离子电导率的盐浓度依赖性的Fuoss− Kraus型分析所揭示的。
It is shown that the addition of fumed silica to polymer electrolytes results in the formation of gel-like polymer materials. Despite the quasi-solid structure of these composite systems, compared to the liquid base poly(ethylene oxide) dimethyl ether (PEODME)−LiClO4 electrolyte, an increase in conductivity is observed for several salt concentrations of composite systems compared to that of the PEODME−LiClO4 electrolytes. For other salt concentrations, the conductivities of the composite systems are slightly higher or at least comparable to that measured for the unmodified electrolyte. At the lowest salt concentrations (e.g., 10-5−10-4 mol/kg PEODME), the conductivities of the PEODME−LiClO4 electrolyte are higher. This increase in conductivity is related to the reduction in the fraction of ion pairs as revealed by FT-IR experiments and Fuoss−Kraus-type analyses of the salt concentration dependence of the ionic conductivity.