Cation dynamics and relaxation in nanoscale polymer electrolytes:: A 7Li NMR study

被引：51

作者：

Mustarelli, P

Capiglia, C

Quartarone, E

Tomasi, C

Ferloni, P

Linati, L

机构：

[1] Univ Pavia, Dept Chem Phys, I-27100 Pavia, Italy

[2] CNR, CSTE, I-27100 Pavia, Italy

[3] Univ Pavia, Ctr Grandi Strumenti, I-27100 Pavia, Italy

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.60.7228

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Composite polymer electrolytes are of interest for solid-state electrochemical devices. In this paper we use Li-7 solid-state NMR to investigate the cation dynamics of poly(ethylene oxide)- (PEO-) based electrolytes, to which nanoscale ceramics has been added. The fillers give origin to nanocomposites. The NMR linewidth is dominated by LI-H magnetic dipolar interaction. The spin-lattice relaxation is chiefly controlled by electric quadrupolar interaction. The spin dynamics is sensibly influenced by the filler nanoparticles, which act as homogeneizing agents for the polymer. [S0163-1829(99)05333-3].

引用

页码：7228 / 7233

页数：6

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