Polytriphenylamine used as an electroactive separator material for overcharge protection of rechargeable lithium battery

被引：48

作者：

Feng, J. K. ^{[1
]}

Ai, X. P. ^{[1
]}

Cao, Y. L. ^{[1
]}

Yang, H. X. ^{[1
]}

机构：

[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2006年 / 161卷 / 01期

基金：

中国国家自然科学基金;

关键词：

electroactive polymer; polytriphenylamine; lithium ion batteries; overcharge protection;

D O I：

10.1016/j.jpowsour.2006.03.040

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：

An electroactive polytriphenylamine (PTPAn) was synthesized and used as separator material for providing a self-activating overcharge protection of rechargeable lithium batteries. The experimental results from the Li-LiFePO4 cells demonstrated that the electroactive separator could transform from an electronically isolating state to a conductive state at overcharge, producing an resistive internal short circuit to maintain the cell's voltage at the safety value of similar to 3.75 V. In addition, the electroactive PTPAn separator works reversibly and has no negative influences on the normal charge-discharge behaviors of the Li-LiFePO4 cells. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：545 / 549

页数：5

共 27 条

[1] Aromatic compounds as redox shuttle additives for 4 V class secondary lithium batteries [J].