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Journal of Inorganic Materials

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2009 , Vol. 24 >Issue 1: 139 - 142

DOI: https://doi.org/10.3724/SP.J.1077.2009.00139

Research Paper

Preparation of Spherical Nanocrystal LiFePO4 and Li4Ti5O12 and Investigation of the LiFePO4/Li4Ti5O12 Cell

  • GAO Jian ,
  • YING Jie-Rong ,
  • JIANG Chang-Yin ,
  • WAN Chun-Rong
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  • Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 102201, China

Received date: 2008-03-19

  Revised date: 2008-05-18

  Online published: 2009-01-20

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Abstract

The spherical nanocrystal LiFePO4/C and Li4Ti5O12/C are synthesized via “controlled crystallization” and “outer gel” technics, respectively. XRD, SEM, BET testing and the determination of the electrochemical properties show that the LiFePO4/C and Li4Ti5O12/C particles are spherical nanocrystals. The products exhibit great specific surface area. The tap-densities of spherical LiFePO4/C and Li4Ti5O12/C powders are as high as 1.25 and 1.71g/cm3, respectively. The initial discharge specific capacities of the LiFePO4/C and Li4Ti5O12/C reach 144.0 and 144.2mAh/g at 1C rate. The materials also exhibit excellent cycle performance. A 1.8 V lithium-ion battery composed of LiFePO4/C and Li4Ti5O12/C shows a quite flat operating voltage of 1.8V with excellent cycleability.

Key words： lithium-ion battery; LiFePO4; Li4Ti5O12; spherical

Cite this article

GAO Jian , YING Jie-Rong , JIANG Chang-Yin , WAN Chun-Rong . Preparation of Spherical Nanocrystal LiFePO4 and Li4Ti5O12 and Investigation of the LiFePO4/Li4Ti5O12 Cell[J]. Journal of Inorganic Materials, 2009 , 24(1) : 139 -142 . DOI: 10.3724/SP.J.1077.2009.00139

References

1］卢俊彪，张中太，唐子龙，等．稀有金属材料与工程, 2004, 33(7): 679-683.
［2］Gao J, Ying J R, Jiang C Y, et al. J. Power Sources, 2007, 166(1): 255-259.
［3］Wang G X, Bewlay S L, Konstantinov K, et al. Electrochimica Acta. 2004, 50 (2-3): 443-447.
［4］Christensen J, Srinivasan V, Newmana J. J. Electrochem. Soc., 2006, 153(3): A560-A565.
［5］Shi S Q, Liu L J, Ouyang C Y, et al. Physical Review B, 2003, 68 (19): Art. No. 195108.
［6］Guerfi A, Charest P, Kinoshita K, et al. J. Power Sources, 2004, 126(1-2): 163-168.
［7］Amatucci G G, Badway F, Pasquier A D, et al. J. Electrochem. Soc., 2001, 148(8): A930-A939.
［8］Liu H, Fu L J, Zhang H P, et al. Electrochem. Solid-State Lett., 2006, 9(12): A529- A533.
［9］Wang G J, Gao J, Fu L J, et al. J. Power Sources, 2007, 174(2): 1109-1112.
［10］应皆荣，高剑，姜长印，等(YING Jie-Rong, et al). 无机材料学报(Journal of Inorganic Materials), 2006, 21(2): 291-297.
［11］Kanamura K, Akutagawa N, Dokko K. J. Power Sources, 2005, 146(1-2): 86-89.
［12］Christensen J, Srinivasan V, Newmana J. J. Electrochem. Soc., 2006, 153(3): A560-A565.
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