X-ray diffraction and vibrational spectroscopic studies on PAN-LiTFSI polymer electrolytes

被引：61

作者：

Li, JZ ^{[1
]}

Huang, XJ ^{[1
]}

Chen, LQ ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Lab Solid State Ion, Beijing 100080, Peoples R China

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2000年 / 147卷 / 07期

关键词：

D O I：

10.1149/1.1393585

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Polyacrylonitrile(PAN)-lithium bis(trifluoromethane sulfone)imide (LiTFSI) complex has been investigated by X-ray diffraction (XRD) and vibrational spectroscopy Two kinds of amorphous complexes are found in the salt-in-polymer and polymer-in-salt regime, respectively. Phase transition is observed by XRD as the content of lithium salt increases from P(AN)(6)-LiTFSI to P(AN)(2)-LiTFSI. It is also evidenced by Fourier Transform infrared (FTIR) and Raman spectroscopic studies. Interactions between the Li ion and host polymer are clarified by comparing the spectral evolution of the -C=N group before and after LiTFSI was complexed with PAN. However, the LiTFSI addition has no obvious influence on the -CH2 group of PAN, evidently different from that observed with PEO. Li+ ions coordinate also with O and/or N of anions, probed by the spectral changes of -SNS and -SO2 groups. (C) 2000 The Electrochemical Society.

引用

页码：2653 / 2657

页数：5

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