Solid state synthesis of LiFePO4 studied by in situ high energy X-ray diffraction

被引：56

作者：

Chen, Zonghai ^{[1
]}

Ren, Yang ^{[2
]}

Qin, Yan ^{[1
]}

Wu, Huiming ^{[1
]}

Ma, Shengqian ^{[1
,3
]}

Ren, Jianguo ^{[1
]}

He, Xiangming ^{[4
]}

Sun, Y. -K. ^{[5
]}

Amine, Khalil ^{[1
]}

机构：

[1] Argonne Natl Lab, Chem Sci & Engn Div, Lemont, IL 60439 USA

[2] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Lemont, IL 60439 USA

[3] Univ S Florida, Dept Chem, Tampa, FL 33620 USA

[4] Tsinghua Univ, Inst Nucl Sci & New Energy Technol, Beijing 100084, Peoples R China

[5] Hanyang Univ, Dept WCU Energy Engn, Seoul 133791, South Korea

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 15期

关键词：

LITHIUM-ION BATTERIES; ELECTRODE MATERIALS; CARBON; PHOSPHATES; TRANSPORT; IRON;

D O I：

10.1039/c0jm04049e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The phase evolution and crystal structure transition of materials during solid-state synthesis of LiFePO4 were investigated by in situ high energy X-ray diffraction. It was found that the solid state reaction forming LiFePO4 started at a very low temperature, and LiFePO4 was clearly observed when the reaction temperature was above 173 degrees C. In situ X-ray diffraction data also revealed that several impurities appeared when the reaction temperature was above 400 degrees C. These impurities were successfully indexed with ex situ X-ray diffraction as Li3PO4, Fe2P, and Fe3P.

引用

页码：5604 / 5609

页数：6

共 20 条

[1] Synthesis and electrochemical analysis of vapor-deposited carbon-coated LiFePO4 [J].

Belharouak, I ;

Johnson, C ;

Amine, K .

ELECTROCHEMISTRY COMMUNICATIONS, 2005, 7 (10) :983-988

[2] 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

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

Chung, SY ;

Bloking, JT ;

Chiang, YM .

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

[4] Size effects on carbon-free LiFePO4 powders [J].

Delacourt, C. ;

Poizot, P. ;

Levasseur, S. ;

Masquelier, C. .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2006, 9 (07) :A352-A355

[5] Electrochemical and electrical properties of Nb- and/or C-containing LiFePO4 composites [J].

Delacourt, C ;

Wurm, C ;

Laffont, L ;

Leriche, JB ;

Masquelier, C .

SOLID STATE IONICS, 2006, 177 (3-4) :333-341

[6] Toward understanding of electrical limitations (electronic, ionic) in LiMPO4 (M = Fe, Mn) electrode materials [J].

Delacourt, C ;

Laffont, L ;

Bouchet, R ;

Wurm, C ;

Leriche, JB ;

Morcrette, M ;

Tarascon, JM ;

Masquelier, C .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (05) :A913-A921

[7] Nanostructured materials for lithium-ion batteries:: Surface conductivity vs. bulk ion/electron transport [J].

Ellis, B. ;

Herle, P. Subramanya ;

Rho, Y. -H. ;

Nazar, L. F. ;

Dunlap, R. ;

Perry, Laura K. ;

Ryan, D. H. .

FARADAY DISCUSSIONS, 2007, 134 :119-141

[8] Improved of cathode performance of LiFePO4/C composite using different carboxylic acids as carbon sources for lithium-ion batteries [J].

Goktepe, Huseyin ;

Sahan, Halil ;

Kilic, Fatma ;

Patat, Saban .

IONICS, 2010, 16 (03) :203-208

[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] 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

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