An investigation of polypyrrole-LiFePO4 composite cathode materials for lithium-ion batteries

被引：266

作者：

Wang, GX ^{[1
]}

Yang, L ^{[1
]}

Chen, Y ^{[1
]}

Wang, JZ ^{[1
]}

Bewlay, S ^{[1
]}

Liu, HK ^{[1
]}

机构：

[1] Univ Wollongong, Inst Superconducting & Elect Mat, Energy Storage Mat Res Programme, Wollongong, NSW 2500, Australia

来源：

ELECTROCHIMICA ACTA | 2005年 / 50卷 / 24期

基金：

澳大利亚研究理事会;

关键词：

polypyrrole; lithium iron phosphate; lithium-ion batteries; AC impedance;

D O I：

10.1016/j.electacta.2005.02.026

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A series of polypyrrole-LiFePO4 (PPy-LiFePO4) composites were synthesised by polymerising pyrrole monomers on the surface of LiFePO4 particles. AC impedance measurements show that the coating of polypyrrole significantly decreases the charge-transfer resistance of LiFePO4 electrodes. The electrochemical reactivity of polypyrrole and PPy-LiFePO4 composites for lithium insertion and extraction was examined by charge/discharge testing. The PPy-LiFePO4 composite electrodes demonstrated an increased reversible capacity and better cyclability, compared to the bare LiFePO4 electrode. (C) 2005 Elsevier Ltd. All rights reserved.

引用

页码：4649 / 4654

页数：6

共 25 条

[1] The source of first-cycle capacity loss in LiFePO4 [J].

Andersson, AS ;

Thomas, JO .

JOURNAL OF POWER SOURCES, 2001, 97-8 :498-502

[2] Lithium extraction/insertion in LiFePO4:: an X-ray diffraction and Mossbauer spectroscopy study [J].

Andersson, AS ;

Kalska, B ;

Häggström, L ;

Thomas, JO .

SOLID STATE IONICS, 2000, 130 (1-2) :41-52

[3] Lithium iron(II) phospho-olivines prepared by a novel carbothermal reduction method [J].

Barker, J ;

Saidi, MY ;

Swoyer, JL .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2003, 6 (03) :A53-A55

[4] A metal-free polypyrrole graphite secondary battery with an anion shuttle mechanism [J].

Boinowitz, T ;

Suden, GT ;

Tormin, U ;

Krohn, H ;

Beck, F .

JOURNAL OF POWER SOURCES, 1995, 56 (02) :179-187

[5] Electronically conductive phospho-olivines as lithium storage electrodes [J].

Chung, SY ;

Bloking, JT ;

Chiang, YM .

NATURE MATERIALS, 2002, 1 (02) :123-128

[6] Micromorphological dynamics of polypyrrole films in propylene carbonate solutions studied by in situ AFM and EQCM [J].

Cohen, YS ;

Levi, MD ;

Aurbach, D .

LANGMUIR, 2003, 19 (23) :9804-9811

[7] A novel concept for the synthesis of an improved LiFePO4 lithium battery cathode [J].

Croce, F ;

D'Epifanio, A ;

Hassoun, J ;

Deptula, A ;

Olczac, T ;

Scrosati, B .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2002, 5 (03) :A47-A50

[8] LiFePO4 synthesis routes for enhanced electrochemical performance [J].

Franger, S ;

Le Cras, F ;

Bourbon, C ;

Rouault, H .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2002, 5 (10) :A231-A233

[9] Nano-network electronic conduction in iron and nickel olivine phosphates [J].

Herle, PS ;

Ellis, B ;

Coombs, N ;

Nazar, LF .

NATURE MATERIALS, 2004, 3 (03) :147-152

[10] ION AND SOLVENT TRANSFER ACCOMPANYING POLYBITHIOPHENE DOPING AND UNDOPING [J].

HILLMAN, AR ;

SWANN, MJ ;

BRUCKENSTEIN, S .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1990, 291 (1-2) :147-162

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