Pure LiFePO4 with high energy density prepared by water quenching treatment

被引:2
作者
Gao, Xu Guang [1 ]
Hu, Guo Rong [1 ]
Peng, Zhong Dong [1 ]
Du, Ke [1 ]
Deng, Xin Rong [1 ]
机构
[1] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Peoples R China
基金
中国国家自然科学基金;
关键词
Li-ion battery; cathode material; LiFePO4; water quenching;
D O I
10.1016/j.cclet.2007.08.017
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A compound "vacuum firing and water quenching" technique was presented in the synthesis of LiFePO4 cathode powder. The sample was prepared by heating the pre-decomposed precursor mixtures sealed in vacuum quartz-tube, followed by water quenching at the sintering temperature. The results indicate that using the "fast quenching" treatment can succeed in controlling overgrowth of the grain size of final product and improving its utilization ratio of active material. The sample synthesized by this technique has the high reversible discharge specific capacity and good cyclic electrochemical performance. (c) 2007 Xu Guang Gao. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.
引用
收藏
页码:1256 / 1260
页数:5
相关论文
共 15 条
[1]   Electronically conductive phospho-olivines as lithium storage electrodes [J].
Chung, SY ;
Bloking, JT ;
Chiang, YM .
NATURE MATERIALS, 2002, 1 (02) :123-128
[2]   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
[3]  
JIAN H, 2006, J POWER SOURCES, V162, P1289
[4]  
JIN X, 2006, CHINESE J NONFERROUS, V16, P1439
[5]   Synthesis and performance of LiMn0.6Fe0.4PO4/nano-carbon webs composite cathode [J].
Mi, CH ;
Zhang, XG ;
Zhao, XB ;
Li, HL .
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2006, 129 (1-3) :8-13
[6]   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
[7]   Synthesis of LiFePO4 with fine particle by co-precipitation method [J].
Park, KS ;
Kang, KT ;
Lee, SB ;
Kim, GY ;
Park, YJ ;
Kim, HG .
MATERIALS RESEARCH BULLETIN, 2004, 39 (12) :1803-1810
[8]  
Ravet N, 2003, NAT MATER, V2, P702, DOI 10.1038/nmat1009a
[9]   Electrochemical properties of carbon-coated LiFePO4 cathode using graphite, carbon black, and acetylene black [J].
Shin, Ho Chul ;
Cho, Won Il ;
Jang, Ho .
ELECTROCHIMICA ACTA, 2006, 52 (04) :1472-1476
[10]  
Tao L, 2006, MATER LETT, V60, P1251