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

共 23 条

[1] Hot-pressed, solvent-free, nanocomposite, PEO-based electrolyte membranes II.: All solid-state Li/LiFePO4 polymer batteries [J].

Appetecchi, GB ;

Hassoun, J ;

Scrosati, B ;

Croce, F ;

Cassel, F ;

Salomon, M .

JOURNAL OF POWER SOURCES, 2003, 124 (01) :246-253

[2] Fine-particle lithium iron phosphate LiFePO4 synthesized by a new low-cost aqueous precipitation technique [J].

Arnold, G ;

Garche, J ;

Hemmer, R ;

Ströbele, S ;

Vogler, C ;

Wohlfahrt-Mehrens, A .

JOURNAL OF POWER SOURCES, 2003, 119 :247-251

[3]

Bard A.J., 2001, ELECTROCHEMICAL METH

[4] Hydrothermal synthesis of lithium iron phosphate [J].

Chen, Jiajun ;

Whittingham, M. Stanley .

ELECTROCHEMISTRY COMMUNICATIONS, 2006, 8 (05) :855-858

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

Chung, SY ;

Bloking, JT ;

Chiang, YM .

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

[6] Identification of surface impurities on LiFePO4 particles prepared by a hydrothermal process [J].

Dokko, K ;

Shiraishi, K ;

Kanamura, K .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (11) :A2199-A2202

[7] Nanosized LiFePO4 Cathode materials for lithium ion batteries [J].

Gul, Hal-Bon ;

Jun, Dae-Kyoo ;

Park, Gye-Choon ;

Jin, Bo ;

Jin, En Mei .

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2007, 7 (11) :3980-3984

[8] Atomic-scale investigation of defects, dopants, and lithium transport in the LiFePO4 olivine-type battery material [J].

Islam, MS ;

Driscoll, DJ ;

Fisher, CAJ ;

Slater, PR .

CHEMISTRY OF MATERIALS, 2005, 17 (20) :5085-5092

[9] Preparation and characterization of LiFePO4 cathode materials by hydrothermal method [J].

Jin, Bo ;

Gu, Hal-Bon .

SOLID STATE IONICS, 2008, 178 (37-38) :1907-1914

[10] A study on the electrochemical characteristics of LiFePO4 cathode for lithium polymer batteries by hydrothermal method [J].

Jin, En Mei ;

Jin, Bo ;

Jun, Dae-Kyoo ;

Park, Kyung-Hee ;

Gu, Hal-Bon ;

Kim, Ki-Won .

JOURNAL OF POWER SOURCES, 2008, 178 (02) :801-806

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