Electrochemical properties of carbon-coated LiFePO4 cathode using graphite, carbon black, and acetylene black

被引：286

作者：

Shin, Ho Chul

Cho, Won Il

Jang, Ho

机构：

[1] Korea Univ, Coll Engn, Dept Adv Mat Engn, Seoul 136713, South Korea

[2] Korea Inst Sci & Technol, Econano Res Ctr, Seoul 136791, South Korea

来源：

ELECTROCHIMICA ACTA | 2006年 / 52卷 / 04期

关键词：

lithium iron phosphate; lithium-ion batteries; carbon coating; electrochemical properties; AC impedance;

D O I：

10.1016/j.electacta.2006.01.078

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrochemical properties of LiFePO4 were investigated by incorporating conductive carbon from three different carbon sources (graphite, carbon black, acetylene black). SEM observations revealed that the carbon-coated LiFePO4 were smaller than the bare LiFePO4 particles. The carbon-coated LiFePO4 showed much better performance in terms of the discharge capacity and cycling stability than the bare LiFePO4. Among carbon-coated LiFePO4, the particles coated with graphite exhibited better electrochemical properties than others coated with carbon black or acetylene black. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：1472 / 1476

页数：5

共 16 条

[1] 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

[2] 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

[3] Reducing carbon in LiFePO4/C composite electrodes to maximize specific energy, volumetric energy, and tap density [J].

Chen, ZH ;

Dahn, JR .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (09) :A1184-A1189

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

Chung, SY ;

Bloking, JT ;

Chiang, YM .

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

[5] Approaching theoretical capacity of LiFePO4 at room temperature at high rates [J].

Huang, H ;

Yin, SC ;

Nazar, LF .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2001, 4 (10) :A170-A172

[6] Cycling performance of LiFePO4 cathode material for lithium secondary batteries [J].

Kim, HS ;

Cho, BW ;

Cho, WI .

JOURNAL OF POWER SOURCES, 2004, 132 (1-2) :235-239

[7] A comparison of the electrode/electrolyte reaction at elevated temperatures for various Li-ion battery cathodes [J].

MacNeil, DD ;

Lu, ZH ;

Chen, ZH ;

Dahn, JR .

JOURNAL OF POWER SOURCES, 2002, 108 (1-2) :8-14

[8] Effect of structure on the Fe3+/Fe2+ redox couple in iron phosphates [J].

Padhi, AK ;

Nanjundaswamy, KS ;

Masquelier, C ;

Okada, S ;

Goodenough, JB .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (05) :1609-1613

[9] Phospho-olivines as positive-electrode materials for rechargeable lithium batteries [J].

Padhi, AK ;

Nanjundaswamy, KS ;

Goodenough, JB .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (04) :1188-1194

[10] Improved electrochemical performance of a LiFePO4-based composite cathode [J].

Prosini, PP ;

Zane, D ;

Pasquali, M .

ELECTROCHIMICA ACTA, 2001, 46 (23) :3517-3523

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