Structure of liquid PEO-LiTFSI electrolyte

被引：169
作者：
Mao, GM
Saboungi, ML
Price, DL
Armand, MB
Howells, WS
机构：
[1] Argonne Natl Lab, Argonne, IL 60439 USA
[2] Univ Montreal, Dept Chem, Montreal, PQ H3C 3J7, Canada
[3] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 24期
关键词：
D O I：
10.1103/PhysRevLett.84.5536
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The structure of a polymer electrolyte, P(EO)(7.5)LiN(SO2CF3)(2), has been determined by neutron diffraction with isotropic substitution. The Li ions are bonded on average to five ether oxygens belonging to pairs of PEO coils. These are arranged with a considerable degree of extended-range order providing pathways for the Li ion conduction. The lack of ion pairing in this system below 4.8 Angstrom is reminiscent of that observed in the remarkable structure of P(EO)(6)LiAsF6 and implies that anions and cations are free to migrate independently.
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页码：5536 / 5539
页数：4
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