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Journal of Inorganic Materials

Journal of Inorganic Materials >

2006 , Vol. 21 >Issue 3: 627 - 632

DOI: https://doi.org/10.3724/SP.J.1077.2006.00627

Research Paper

Synthesis by Solid-state Reaction and Characterise of Li1.02CoxCryMn2-x-yO4

  • REN Hai-Lun ,
  • DAI Yong-Nian ,
  • YAO Yao-Chun ,
  • LI Wei-Hong
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  • 1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
    2. Faculty of Material and Metallurgy Engineering, Kunming Institute of Science and Technology, Yunnan 650093, China

Received date: 2005-06-07

  Revised date: 2005-07-07

  Online published: 2006-05-20

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Abstract

The spinel Li1.02CoxCryMn2-x-yO4 as a cathode of lithium ion secondary battery was synthesized by a solid-state method. The influences of the different Cr and Co content in the LiMn2O4 on phase constitution and structure, lattice parameters and electrochemical properties were investigated. The spinel structure was kept still with inserting a small amount of Cr and Co to Li1.02Mn2O4. The Jahn-Teller distortion and the Mn3+ disproportionation reaction were restrained efficiently. With the substitution content of Cr and Co increased, the lattice parameters of Li1.02Mn2O4 decreased, while specific surface area was increased, and the specific capacity of the cell was improved. In addition, the initial capacity was decreased, but the cycle performance of materials was improved obviously.

Key words： solid-state method; doping Cr and Co; electrochemical performance; AC impedance

Cite this article

REN Hai-Lun , DAI Yong-Nian , YAO Yao-Chun , LI Wei-Hong . Synthesis by Solid-state Reaction and Characterise of Li1.02CoxCryMn2-x-yO4[J]. Journal of Inorganic Materials, 2006 , 21(3) : 627 -632 . DOI: 10.3724/SP.J.1077.2006.00627

References

1 Song D, Ikuta H, Uchida T, et al. Solid State Ionics, 1999, 117: 151-156.
2 宫杰, 杨景海, 王春忠等. 高等学校化学学报, 2002, 23(12): 2322-2324.
3 Kim J H, Sun Y K. J. Power Sources, 2003, 119-121: 166-170.
4 Yongyao X, Yoshio M. J. Electrochem Soc., 1996, 143(3): 825-833.
5 Yongyao X, Yoshio M. J. Power Sources, 1995, 57(1-2): 125-131.
6 李智敏, 仇卫华, 胡环宇, 等(Li Zhi-min, et al).无机材料学报(Journal of Inorganic
Materials), 2004, 19(2): 342-348.
7 Tarascon J M, Mckinnon W R, Coowar F, et al. J. Electrochem. Soc., 1994, 141(6): 1421-1431.
8 Jong H Lee, Jin K Hong, Dong H Jang, et al. J. Power Sources, 2000, (89): 7-14.
9 Aurbach D, Levi M D. J. Phys. Chem. B, 1997, 101(23): 4630-4640.
10 Wang G X, Bradhurst D H, Liu H K, et al. Solid State Ionics, 1999, (120): 95-101.
11 Amatucci G G, Pereira, Zheng T, et al. J. Electrochem. Soc., 2001, 148(2): A171-A182.
12 Momchilov A, Manev V, Nassalevska A. J. Power Source, 1993, 41: 305-308.
13 Aurbach D, Levi M D, Gamulski K, et al. J. Power Source, 1999, 81-82: 472-479.
14 Aurbach D, Gamulski K, Markovsky B, et al. J. Electrochem. Soc., 2000, 147(4): 1322-1331.
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