Ionic conductivity in the solid glyme complexes [CH3O(CH2CH2O)nCH3]:LiAsF6 (n=3,4)

被引：44

作者：

Zhang, Chuhong ^{[1
]}

Ainsworth, David ^{[1
]}

Andreev, Yuri G. ^{[1
]}

Bruce, Peter G. ^{[1
]}

机构：

[1] Univ St Andrews, Sch Chem, EastChem, St Andrews KY16 9ST, Fife, Scotland

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2007年 / 129卷 / 28期

关键词：

D O I：

10.1021/ja073145f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have shown that two small molecule solid electrolytes, [CH3O(CH2CH2O)(3)CH3]:LiAsF6 and [CH3O(CH2CH2O)(4)CH3]:LiAsF6, differing by only one ethylene oxide unit exhibit markedly different transport numbers, t(+)= 0.8 and 0.1, respectively. Such differences are related, on the one hand, to the presence of tunnels for Li+ migration in the crystal structure of the G3 complex, but not G4, and, on the other hand, to the weaker binding of AsF6- in the structure of G4 than in G3. Learning how to construct solid electrolytes that exhibit high Li+ transport numbers is important in minimizing polarization when such electrolytes are used in all-solid-state cells, such as lithium batteries.

引用

页码：8700 / +

页数：3

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