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Improvement of storage performance of LiMn2O4/graphite battery with AlF3-coated LiMn2O4

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Abstract

LiMn2O4/graphite batteries using AlF3-coated LiMn2O4 have been fabricated and their electrochemical performance including discharge capacity and cyclic and storage performances have been tested and compared with pristine LiMn2O4/graphite batteries. The LiMn2O4/graphite battery with AlF3-coated LiMn2O4 shows better capacity (108.5 mAhg−1), cyclic performance (capacity retention of 92.7 % after 70 cycles), and capacity recovery ratio (98.6 %) than the pristine LiMn2O4 battery. X-ray diffraction patterns shows that the spinel structure of AlF3-coated LiMn2O4 can be controlled better than that of pristine LiMn2O4 after storage. The improvement in electrochemical performance of the AlF3-coated LiMn2O4/graphite battery is due to the fact that AlF3 acts as a stabilizer and can protect the oxide structure from damaging during storage, leading to a smaller resistance and polarization after storage.

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Acknowledgments

The authors gratefully acknowledge the Natural Science Foundation of Jiangsu Province (BK2011530).

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Authors and Affiliations

  1. School of Material Science and technology, Jiangsu University, Zhenjiang, China

    Yunjian Liu, Jun Lv, Yang Fei & Xiangdong Huo

  2. Jiangsu Genergy Battery Co., Ltd., Yangzhong, China

    Yunjian Liu, Jun Lv, Yang Fei & Yuezhong Zhu

Authors
  1. Yunjian Liu
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  2. Jun Lv
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  3. Yang Fei
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  4. Xiangdong Huo
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  5. Yuezhong Zhu
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Correspondence to Yunjian Liu.

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Liu, Y., Lv, J., Fei, Y. et al. Improvement of storage performance of LiMn2O4/graphite battery with AlF3-coated LiMn2O4 . Ionics 19, 1241–1246 (2013). https://doi.org/10.1007/s11581-013-0853-x

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  • DOI: https://doi.org/10.1007/s11581-013-0853-x

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