Research on the enhanced conductivity of poly(ethylene oxide) electrolyte by adding zeolite Li-FER

被引：3

作者：

Li, XL ^{[1
]}

Guo, J ^{[1
]}

Wu, Q ^{[1
]}

Cheng, Y ^{[1
]}

Long, YC ^{[1
]}

Jiang, ZY ^{[1
]}

机构：

[1] Fudan Univ, Dept Chem, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2005年 / 21卷 / 04期

关键词：

zeolite; ferrierite (FER); PEO; polymer electrolyte; conductivity;

D O I：

10.3866/PKU.WHXB20050411

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：

Li-ferrierite (Li-FER) fine powder was prepared via an ion exchange process using lithium ions to replace the hydrogen atoms in hydroxyl group of FER. Compared with bare LiClO4/PEO [poly (ethylene oxide)] polymer electrolyte, the ionic conductivity of PEO composite polymer electrolyte was enhanced more than three orders by adding the Li-FER powder in it. The results of electrochemical measurements show that the Li+ transference number increased obviously by adding the Li-FER powder. The crystal properties of the composite polymer electrolytes were investigated by XRD, DSC, and polarized light microscopy (PLM) methods. It was found that the Li-FER fine powder could act as crystal nucleator to make grain refinement and provide more continuous amorphous domain, in which Li' ions can move more easily. Therefore the conductivity of the PEO composite polymer electrolytes increased greatly.

引用

页码：397 / 401

页数：5