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FTIR characterization of ion association and phase composition in PEO-based polymer electrolytes

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聚氧化乙烯基聚合物电解质中离子缔合与结晶状态的傅立叶变换红外光谱_FTIR_研究.pdf (548.7Kb)
Date
2007
Author
Cheng Hu
程琥
Zhu Chang-Bao
朱昌宝
Yang Yong
杨勇
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  • 化学化工-已发表论文 [14469]
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Abstract
FTIR spectra of P(EO)(n)LiX [X=N(SO2CF3)(2), SCN, ClO4] polymer electrolytes have been obtained for ethylene oxide/Li ratios from 60 : 1 to 4 : 1. It was shown that ion association in the PEO-LiSCN system is more serious than in the other two systems. At a high LiSCN concentration, contact ion pairs, triple ions and dimers are main ion species in the polymer electrolytes. However, free ions are main ion species in PEO-LiTFSI and PEO-LiClO4 systems. When Li salt was added into PEO, a plastizing role of Li salt anions can lead to transformation of a crystalline phase of PEO into an amorphous phase. When Li salt content exceeds a certain value, some kinds of crystalline complexes will be formed in PEO-LiX systems.
Citation
ACTA CHIMICA SINICA,2007,65(24):2832-2838
URI
http://dx.doi.org/doi:CNKI:SUN:HXXB.0.2007-24-008
https://dspace.xmu.edu.cn/handle/2288/9181

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