PEO-LiN(SO2CF2CF3)2 polymer electrolytes -: V.: Effect of fillers on ionic transport properties
PEO-LiN(SO2CF2CF3)2 polymer electrolytes -: V.: Effect of fillers on ionic transport properties
复制标题
DOI：
10.1149/1.1636737
复制
发表时间：
2004-02-01
影响因子：
3.9
通讯作者：
Passerini, S
中科院分区：
文献类型：
--
作者：
Shin, JH;Passerini, S
用交流阻抗、直流极化和循环伏安法研究了无溶剂法制备的聚氧乙烷(20)LiN(SO2CF2CF3)(2)[P(EO)(20)LiBETI]和P(EO)(20)LiBETI+x(x=2、5和10)wt%填充物(7 nm、12 nm和γ-LiAlO2)聚合物电解质的离子传输特性，包括离子电导率、锂迁移数和扩散系数。无论是否添加纳米级的气相二氧化硅颗粒，所有样品的离子电导率都表现出相似的数值和趋势。气相二氧化硅颗粒的加入使锂离子的迁移数和扩散系数略有降低。这些结果表明，在非常干燥的条件下制备的P(EO)(20)LiBETI聚合物电解质中，纳米气相二氧化硅粒子的存在对离子传输性能几乎没有实际影响。(C)2004年电化学会。
Ionic transport properties, including ionic conductivity, lithium transference numbers, and diffusion coefficients, of poly(ethylene oxide)(20) LiN(SO2CF2CF3)(2)[P(EO)(20)LiBETI] and P(EO)(20)LiBETI + x (x = 2, 5 and 10) wt % filler (7 nm SiO2, 12 nm SiO2, and gamma-LiAlO2) polymer electrolytes prepared by a solvent-free procedure developed at ENEA have been investigated using ac impedance, dc polarization, and cyclic voltammetry. Regardless of whether or not nanosize fumed SiO2 particles were added, the ionic conductivity of all of the samples showed similar values and trends. Both the transference number and diffusion coefficient of lithium cations were decreased slightly by the addition of fumed SiO2 particles. These results suggest that the presence of nanosize fumed SiO2 particles in the P(EO)(20)LiBETI polymer electrolytes prepared under very dry conditions has little practical influence on the ionic transport properties. (C) 2004 The Electrochemical Society.