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Conductivity and NMR properties of plasticized polyethers complexed with lithium salts

被引：25
作者：
Forsyth, M
Garcia, M
MacFarlane, DR
Ng, S
Smith, ME
Strange, JH
机构：
[1] MONASH UNIV,DEPT CHEM,CLAYTON,VIC 3168,AUSTRALIA
[2] UNIV KENT,PHYS LAB,CANTERBURY CT7 2NR,KENT,ENGLAND
来源：
SOLID STATE IONICS | 1996年 / 86-8卷
基金：
澳大利亚研究理事会;
关键词：
polymer electrolytes; fluorine-19; NMR; lithium-7; plasticizers; conductivity; relaxation times;
D O I：
10.1016/0167-2738(96)00310-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
NMR provides a tool whereby the dynamic properties of specific nuclei can be investigated. In the present study, a poly(ethylene oxide-co-propylene oxide) network has been used as the polymer host to prepare solid polymer electrolytes (SPE) containing either LiClO4 or LiCF3SO3. In addition, a low molecular weight plasticizer [propylene carbonate (PC), dimethyl formamide (DMF) or tetraglyme] has been added to several of the samples to enhance the mobility of the polymer and, thus, of the ionic species. The effects of plasticizer and salt concentration on the ionic structure and mobility in these SPEs, as measured by NMR relaxation times, and correlation to the conductivity behaviour in these systems are discussed. Temperature dependent triflate diffusion coefficients, as measured by Pulsed Field Gradient F-19-NMR, in plasticized SPEs are also reported.
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页码：1365 / 1370
页数：6
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