Solid polymer electrolytes based on cross-linked poly siloxane-δ-oligo(ethylene oxide):: ionic conductivity and electrochemical properties

被引:66
作者
Kang, Y
Lee, W
Suh, DH
Lee, C
机构
[1] Korea Res Inst Chem Technol, Adv Mat Div, Taejon 305600, South Korea
[2] Hanyang Univ, Dept Chem Engn, Seoul 133791, South Korea
关键词
polymer electrolytes; lithium battery; PEO; polysiloxane; acrylate;
D O I
10.1016/S0378-7753(03)00189-7
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
Poly(siloxanes-g-oligo(ethylene oxide)) with acrylate groups at the terminal position were prepared and examined for the solid polymer electrolyte (SPE) by curing them. Poly(ethylene glycol) dimethyl ether (PEGDME) was added as a plasticizer. Conductivity of the resulting polymer electrolytes was greatly enhanced with increasing amounts of low molecular weight PEGDME. Maximum conductivity was found to be 8 x 10(-4) S/cm at 30 degreesC with an [EO]/[Li] ratio of about 8. These electrolytes showed oxidation stability up to 4.95 V against the lithium reference electrode. Reversible electrochemical plating/stripping of lithium was observed on the nickel electrode. The plating/stripping efficiency of lithium on nickel was measured to be about 53%. (C) 2003 Elsevier Science B.V All rights reserved.
引用
收藏
页码:448 / 453
页数:6
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