Study on the Electrochemical Performance of Carbon-Coated LiFePO4 Prepared by Sol-Gel Method

被引：2

作者：

Yang, Rong ^{[1
,2
]}

Kang, Erwei ^{[1
]}

Jiang, Bailing ^{[1
]}

Song, Xiaoping ^{[3
]}

机构：

[1] Xian Univ Technol, Xian 710048, Peoples R China

[2] Key Lab Synthet & Natl Funct Mol Chem, Xian 710069, Peoples R China

[3] Xi An Jiao Tong Univ, Xian 7140049, Peoples R China

来源：

CHINA POSTDOCTORAL FORUM ON MATERIALS SCIENCE AND ENGINEERING | 2011年 / 266卷

关键词：

Lithium-ion batteries; Cathode material; Lithium iron phosphates; Sol-gel method;

D O I：

10.4028/www.scientific.net/AMR.266.22

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

LiFePO4/C is synthesized via sol-gel method using Fe3+ as iron sources and complexing agents, followed by sintering at high temperature for crystallization. The amount of carbon in these composites is less than 6.8 wt.% and the XRD experiment confirms that all samples are pure single phase indexed with orthorhombic Pnma space group. The particle size of the LiFePO4/C synthesized by acetic acid as complexing agent is drastically fine with 200nm. The electrochemical performance of this material, including reversible capacity, cycle number and charge-discharge characteristics, exhibits better.

引用

页码：22 / +

页数：2

共 5 条

[1] Conductivity improvements to spray-produced LiFePO4 by addition of a carbon source [J].

Bewlay, SL ;

Konstantinov, K ;

Wang, GX ;

Dou, SX ;

Liu, HK .

MATERIALS LETTERS, 2004, 58 (11) :1788-1791

[2] Low-cost, one-step process for synthesis of carbon-coated LiFePO4 cathode [J].

Mi, CH ;

Cao, GS ;

Zhao, XB .

MATERIALS LETTERS, 2005, 59 (01) :127-130

[3] Electroactivity of natural and synthetic triphylite [J].

Ravet, N ;

Chouinard, Y ;

Magnan, JF ;

Besner, S ;

Gauthier, M ;

Armand, M .

JOURNAL OF POWER SOURCES, 2001, 97-8 :503-507

[4] Process investigation, electrochemical characterization and optimization of LiFePO4/C composite from mechanical activation using sucrose as carbon source [J].

Wang, Ke ;

Cai, Rui ;

Yuan, Tao ;

Yu, Xing ;

Ran, Ran ;

Shao, Zongping .

ELECTROCHIMICA ACTA, 2009, 54 (10) :2861-2868

[5] Improving electrochemical properties of lithium iron phosphate by addition of vanadium [J].

Yang, Mu-Rong ;

Ke, Wei-hsin ;

Wu, She-huang .

JOURNAL OF POWER SOURCES, 2007, 165 (02) :646-650

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