Electrochemical properties of LiFePO4-multiwalled carbon nanotubes composite cathode materials for lithium polymer battery

被引：262

作者：

Jin, Bo ^{[1
,2
]}

Jin, En Mei ^{[1
]}

Park, Kyung-Hee ^{[1
]}

Gu, Hal-Bon ^{[1
]}

机构：

[1] Chonnam Natl Univ, Dept Elect Engn, Kwangju 500757, South Korea

[2] Jilin Univ, Coll Mat Sci & Engn, Changchun 130025, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 10期

关键词：

Olivine; LiFePO4-MWCNTs composite; Orthorhombic; Hydrothermal method;

D O I：

10.1016/j.elecom.2008.08.001

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

LiFePO4-multiwalled carbon nanotubes (MWCNTs) composites were prepared by a hydrothermal method followed by ball-milling and heat treating. Cyclic voltammetry, ac impedance and galvanostatic charge/ discharge testing results indicate that LiFePO4-MWCNTs composite exhibits higher discharge capacity and rate capability than pure LiFePO4 at high-rate at room temperature. It is demonstrated that the added MWCNTs not only increase the electronic conductivity and lithium-ion diffusion coefficient but also decrease crystallite size and charge transfer resistance of LiFePO4-MWCNTs composite. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：1537 / 1540

页数：4

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