Reliability of lithium batteries with crosslinked polymer electrolytes

被引：49

作者：

Borghini, MC ^{[1
]}

Mastragostino, M ^{[1
]}

Zanelli, A ^{[1
]}

机构：

[1] UNIV BOLOGNA,DEPT CHEM G CIAMICIAN,I-40126 BOLOGNA,ITALY

来源：

ELECTROCHIMICA ACTA | 1996年 / 41卷 / 15期

关键词：

polymer electrolytes; current fraction; lithium interface; lithium batteries;

D O I：

10.1016/0013-4686(96)00014-X

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Polymer electrolyte films were prepared by chemical crosslinking of polyethylene glycol 2000 (PEG) containing LiSO3CF3 or Li[(SO2CF3)(2)N]; polyethylene glycol dimethylether 500 (PEGDME) was also added to a PEG-LiSO3CF3 electrolyte. The electrochemical properties of these three electrolytes were investigated for ionic conductivity, electrochemical stability window, steady state current fraction, interface resistance and lithium/electrolyte interface stability. Furthermore, we tested prototype Li cells with a LiMn2O4 composite cathode to ascertain the effective viability of these electrolytes in solid-state Li batteries. The Li[(SO2CF3)(2)N] salt in the crosslinked electrolyte presents a steady-state current fraction too low for battery application, while the addition of PEGDME improves conductivity, interface resistance and battery performance. Copyright (C) 1996 Elsevier Science Ltd

引用

页码：2369 / 2373

页数：5

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