Network-type ionic conductors based on oligoethyleneoxy-functionalized pentamethylcyclopentasiloxanes

被引：23

作者：

Zhang, ZC

Lyons, LJ

Amine, K

West, R ^{[1
]}

机构：

[1] Univ Wisconsin, Organosilicon Res Ctr, Dept Chem, Madison, WI 53706 USA

[2] Grinnell Coll, Dept Chem, Grinnell, IA 50112 USA

[3] Argonne Natl Lab, Div Chem Technol, Argonne, IL 60439 USA

来源：

MACROMOLECULES | 2005年 / 38卷 / 13期

关键词：

D O I：

10.1021/ma050066k

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Network-type solid polymer electrolytes (NSPEs) were synthesized containing oligoethylene oxide chains, CH3(OCH2CH2)(3)(CH2)(3)-, within the network structures. Hydrosilylation reactions of precursors 1 and 2 (oligoethyleneoxy partially substituted pentamethylccyclopentasiloxanes (D-5(H))) with an alpha,omega-diallyloligo(ethylene glycol) were employed for the formation of the cross-linked networks. The conductivities of the network polymer/LiX complexes with variable EO/Li ratios were measured by impedance experiments. NSPE-2, with 36.0% cross-linking density, exhibited higher conductivity than NSPE-1, with 43.8%. The optimum conductivity (sigma = 9.24 x 10(-5) S/cm at 25 degrees C, 2.11 x 10(-4) S/cm at 37 degrees C) was found for NSPE-2 with lithium bis(oxalato)borate (LiBOB). LiBOB-doped polymers exhibited higher conductivity than those doped with LiTFSI at the same salt concentration.

引用

页码：5714 / 5720

页数：7

共 40 条

[1] Ionic conduction in polyphosphazene solids and gels:: 13C, 31P, and 15N NMR spectroscopy and molecular dynamics simulations [J].