Electrochemical intercalation of lithium into polypyrrole/silver vanadium oxide composite used for lithium primary batteries

被引：32

作者：

Lee, Jong-Won ^{[1
]}

Popov, Branko N. ^{[1
]}

机构：

[1] Univ S Carolina, Dept Chem Engn, Ctr Electrochem Engn, Columbia, SC 29208 USA

来源：

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

关键词：

silver vanadium oxide; polypyrrole; lithium primary batteries;

D O I：

10.1016/j.jpowsour.2006.03.062

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：

Hybrid composites of polypyrrole (PPy) and silver vanadium oxide (SVO) used for lithium primary batteries were chemically synthesized by an oxidative polymerization of pyrrole monomer on the SVO surface in an acidic medium. The composite electrode exhibited higher discharge capacity and better rate capability as compared with the pristine SVO electrode. The improvement in electrochemical performance of the composite electrode was due to PPy which accommodates lithium ions and also enhances the SVO utilization. Chronoamperometric and ac-impedance measurements indicated that lithium intercalation proceeds under the mixed control by interfacial charge transfer and diffusion. The enhanced SVO utilization in the composite electrode results from a facilitated kinetics of interfacial charge transfer in the presence of PPy. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：565 / 572

页数：8

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