Preparation of LiFePO4 as lithium intercalation compound by emulsion drying method

被引:6
作者
Myung, ST [1 ]
Komaba, S [1 ]
Kurihara, K [1 ]
Kumagai, N [1 ]
机构
[1] Iwate Univ, Fac Engn, Dept Chem Engn, Morioka, Iwate 0208551, Japan
关键词
LiFePO4; cathode; lithium-ion battery; emulsion drying method;
D O I
10.5796/electrochemistry.71.177
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Crystalline olivine type LiFePO4 as cathode material for Li-ion battery was prepared by emulsion drying method. By employing this method, difficulty of conventional preparation, that is, repeated recalcinations and subsequent regrindings, was solved. This method replaced successfully relatively expensive divalent iron to cheaper trivalent iron as a starting material by burning out the emulsion-dried precipitates with carbon, which act as a strong reducing agent. High temperature calcination of the emulsion-dried precursor powders in an Ar atmosphere resulted in high crystalline olivine type LiFePO4 powders which was confirmed and refined by Rietveld method of X-ray diffraction data. The prepared material delivered a capacity as high as 120 and 140 mAh (g-phosphate)(-1) at 25 and 50degreesC, respectively.
引用
收藏
页码:177 / 179
页数:3
相关论文
共 19 条
  • [1] Lithium extraction/insertion in LiFePO4:: an X-ray diffraction and Mossbauer spectroscopy study
    Andersson, AS
    Kalska, B
    Häggström, L
    Thomas, JO
    [J]. SOLID STATE IONICS, 2000, 130 (1-2) : 41 - 52
  • [2] Electronically conductive phospho-olivines as lithium storage electrodes
    Chung, SY
    Bloking, JT
    Chiang, YM
    [J]. NATURE MATERIALS, 2002, 1 (02) : 123 - 128
  • [3] Approaching theoretical capacity of LiFePO4 at room temperature at high rates
    Huang, H
    Yin, SC
    Nazar, LF
    [J]. ELECTROCHEMICAL AND SOLID STATE LETTERS, 2001, 4 (10) : A170 - A172
  • [4] Low temperature synthesis of insertion oxides for lithium batteries
    Manthiram, A
    Kim, J
    [J]. CHEMISTRY OF MATERIALS, 1998, 10 (10) : 2895 - 2909
  • [5] Preparation of layered LiMnxCr1-xO2 solid solution by emulsion drying method as lithium intercalation compounds
    Myung, ST
    Komaba, S
    Hirosaki, N
    Kumagai, N
    [J]. ELECTROCHEMISTRY COMMUNICATIONS, 2002, 4 (05) : 397 - 401
  • [6] Nano-crystalline LiNi0.5Mn1.5O4 synthesized by emulsion drying method
    Myung, ST
    Komaba, S
    Kumagai, N
    Yashiro, H
    Chung, HT
    Cho, TH
    [J]. ELECTROCHIMICA ACTA, 2002, 47 (15) : 2543 - 2549
  • [7] Preparation and characterization of LiMn2O4 powders by the emulsion drying method
    Myung, ST
    Chung, HT
    [J]. JOURNAL OF POWER SOURCES, 1999, 84 (01) : 32 - 38
  • [8] Enhanced structural stability and cyclability of Al-doped LiMn2O4 spinel synthesized by the emulsion drying method
    Myung, ST
    Komaba, S
    Kumagai, N
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (05) : A482 - A489
  • [9] Synthesis of orthorhombic LiMnO2 as a high capacity cathode for Li-ion battery by emulsion drying method
    Myung, ST
    Komaba, S
    Kumagai, N
    [J]. CHEMISTRY LETTERS, 2001, (06) : 574 - 575
  • [10] Preparation and electrochemical characterization of LiCoO2 by the emulsion drying method
    Myung, ST
    Kumagai, N
    Komaba, S
    Chung, HT
    [J]. JOURNAL OF APPLIED ELECTROCHEMISTRY, 2000, 30 (09) : 1081 - 1085