Oxalate based non-aqueous sol-gel synthesis of phase pure sub-micron LiFePO4

被引：31

作者：

Sundarayya, Y.

Swamy, K. C. Kumara

Sunandana, C. S.

机构：

[1] Univ Hyderabad, Sch Phys, Hyderabad 500046, Andhra Pradesh, India

[2] Univ Hyderabad, Sch Chem, Hyderabad, Andhra Pradesh, India

来源：

MATERIALS RESEARCH BULLETIN | 2007年 / 42卷 / 11期

关键词：

nanostructures; sol-gel chemistry; X-ray diffraction; Mossbauer spectroscopy;

D O I：

10.1016/j.materresbull.2006.12.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on the synthesis and preliminary characterisation by X-ray diffraction (XRD), scanning electron microscopy (SEM), Mossbauer spectroscopy and infrared spectroscopy (IR) of C-LiFePO4. Homogeneous sub-micron sized particles of surface carbon coated phase pure LiFePO4 are synthesised by a novel non-aqueous oxalate based sol-gel procedure. Our synthetic route successfully overcomes the incidence of Fe3+, effectively controls undesirable particle growth and has the potential for upscaling and application as Li-ion battery cathodes. (C) 2007 Elsevier Ltd. All rights reserved.

引用

收藏

页码：1942 / 1948

页数：7

相关论文

共 21 条

[1] Thermal stability of LiFePO4-based cathodes [J].

Andersson, AS ;

Thomas, JO ;

Kalska, B ;

Häggström, L .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2000, 3 (02) :66-68

[2] Fine-particle lithium iron phosphate LiFePO4 synthesized by a new low-cost aqueous precipitation technique [J].

Arnold, G ;

Garche, J ;

Hemmer, R ;

Ströbele, S ;

Vogler, C ;

Wohlfahrt-Mehrens, A .

JOURNAL OF POWER SOURCES, 2003, 119 :247-251

[3] EFFECT OF PRESSURE ON MOSSBAUER RESONANCE IN IONIC COMPOUNDS OF IRON [J].

CHAMPION, AR ;

VAUGHAN, RW ;

DRICKAMER, HG .

JOURNAL OF CHEMICAL PHYSICS, 1967, 47 (08) :2583-+

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

Chung, SY ;

Bloking, JT ;

Chiang, YM .

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

[5] A novel concept for the synthesis of an improved LiFePO4 lithium battery cathode [J].

Croce, F ;

D'Epifanio, A ;

Hassoun, J ;

Deptula, A ;

Olczac, T ;

Scrosati, B .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2002, 5 (03) :A47-A50

[6] Structural investigations of phosphate glasses: A detailed infrared study of the x(PbO)-(1-x)P2O5 vitreous system [J].

Dayanand, C ;

Bhikshamaiah, G ;

Tyagaraju, VJ ;

Salagram, M ;

Murthy, ASRK .

JOURNAL OF MATERIALS SCIENCE, 1996, 31 (08) :1945-1967

[7] Characterization of sol-gel-synthesized LiFePO4 by multiple scattering XAFS [J].

Giorgetti, M ;

Berrettoni, M ;

Scaccia, S ;

Passerini, S .

INORGANIC CHEMISTRY, 2006, 45 (06) :2750-2757

[8] Synthesis of LiFePO4 cathode material by microwave processing [J].

Higuchi, M ;

Katayama, K ;

Azuma, Y ;

Yukawa, M ;

Suhara, M .

JOURNAL OF POWER SOURCES, 2003, 119 :258-261

[9] 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

[10] New approach for synthesis of carbon-mixed LiFePO4 cathode materials [J].

Konstantinov, K ;

Bewlay, S ;

Wang, GX ;

Lindsay, M ;

Wang, JZ ;

Liu, HK ;

Dou, SX ;

Ahn, JH .

ELECTROCHIMICA ACTA, 2004, 50 (2-3) :421-426