Versatile synthesis of carbon-rich LiFePO4 enhancing its electrochemical properties

被引：49
作者：
Bauer, EM [1 ]
Bellitto, C
Pasquali, M
Prosini, PP
Righini, G
机构：
[1] CNR, Ist Struttura Mat, I-00016 Rome, Italy
[2] Univ Roma La Sapienza, Fac Ingn, Dipartimento ICMMPM, Rome, Italy
[3] ENEA, Idrocomb, CR Casaccia, I-00060 Rome, Italy
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 04期
关键词：
D O I：
10.1149/1.1651393
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
LiFePO4/C composites were prepared from thermal decomposition of Fe(II) organophosphonates Fe[(RPO3)(H2O)] (R = methyl or phenyl group! in the presence of Li2CO3 at high temperature and under inert atmosphere. The compounds were characterized by chemical analysis, thermogravimetric analysis and differential scanning colorimetry, X-ray powder diffraction, and scanning electron microscopy. Electrodes were fabricated for the electrochemical characterization. The cathode material obtained from Fe[C6H5PO3(H2O)] showed a specific energy evaluated at C/10 rate of about 550 Wh kg(-1). The specific power calculated at 30C rate in excess at 14,000 W kg(-1), while the specific energy was about 28% of the theoretical one. No capacity fading was observed upon cycling. (C) 2004 The Electrochemical Society.
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页码：A85 / A87
页数：3
相关论文
共 14 条
[1]   Synthesis, X-ray powder structure, and magnetic properties of the new, weak ferromagnet iron(II) phenylphosphonate [J].
Bellitto, C ;
Federici, F ;
Altomare, A ;
Rizzi, R ;
Ibrahim, SA .
INORGANIC CHEMISTRY, 2000, 39 (08) :1803-1808
[2]   X-ray single-crystal structure and magnetic properties of Fe[CH3PO3)]•H2O:: A layered weak ferromagnet [J].
Bellitto, C ;
Federici, F ;
Colapietro, M ;
Portalone, G ;
Caschera, D .
INORGANIC CHEMISTRY, 2002, 41 (04) :709-714
[3]  
BELLITTO C, 2002, Patent No. 20003000048
[4]   Electronically conductive phospho-olivines as lithium storage electrodes [J].
Chung, SY ;
Bloking, JT ;
Chiang, YM .
NATURE MATERIALS, 2002, 1 (02) :123-128
[5]   LiFePO4 synthesis routes for enhanced electrochemical performance [J].
Franger, S ;
Le Cras, F ;
Bourbon, C ;
Rouault, H .
ELECTROCHEMICAL AND SOLID STATE LETTERS, 2002, 5 (10) :A231-A233
[6]   Cathodes for lithium-ion batteries: Some comparisons [J].
Goodenough, JB ;
Manivannan, V .
DENKI KAGAKU, 1998, 66 (12) :1173-1181
[7]   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
[8]   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
[9]   Determination of the chemical diffusion coefficient of lithium in LiFePO4 [J].
Prosini, PP ;
Lisi, M ;
Zane, D ;
Pasquali, M .
SOLID STATE IONICS, 2002, 148 (1-2) :45-51
[10]   A new synthetic route for preparing LiFePO4 with enhanced electrochemical performance [J].
Prosini, PP ;
Carewska, M ;
Scaccia, S ;
Wisniewski, P ;
Passerini, S ;
Pasquali, M .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (07) :A886-A890
12