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Nd3+-doped Li3V2(PO4)3 cathode material with high rate capability for Li-ion batteries

Yue-Jiao Li ,  Chuan-Xiong Zhou ,  Shi Chen ,  Feng Wua ,  Liang Hong

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Citation:  Yue-Jiao Li, Chuan-Xiong Zhou, Shi Chen, Feng Wua, Liang Hong. Nd3+-doped Li3V2(PO4)3 cathode material with high rate capability for Li-ion batteries[J]. Chinese Chemical Letters, 2015, 26(8): 1004-1007. doi: 10.1016/j.cclet.2015.03.013 shu

Nd3+-doped Li3V2(PO4)3 cathode material with high rate capability for Li-ion batteries

    • 通讯作者: Yue-Jiao Li,
  • 基金项目:

    This work was supported by the National Key Program for Basic Research of China (No. 2009CB220100) (No. 2009CB220100)

    National High-tech 863 Key Program (No. 2011AA11A235) (No. 2011AA11A235)

    Basic Research Fund of Beijing Institute of Technology (No. 3100012211111). (No. 3100012211111)

摘要: A series of Nd3+-doped Li3NdxV2-x(PO4)3 (x = 0.00, 0.02, 0.05, 0.08 or 0.1) composites are synthesized by the rheological phase reaction method. The XRD results indicate that Nd3+ ions have been successfully merged into a lattice structure. Doped samples show good electrochemical performance in high discharge rate and long cycle. In the potential range of 3.0-4.3 V, Li3Nd0.08V1.92(PO4)3 exhibits an initial discharge capacity of 115.8 mAh/g at 0.2 C and retain 80.86% of capacity retention at 2 C in the 51st cycle. In addition, Li3Nd0.05V1.95(PO4)3 holds at 100.4 mAh/g after 80 cycles at 0.2 C with a capacity retention of 92.4%. Finally, the CV test proves that the potential polarization of Li3Nd0.08V1.92(PO4)3 decreased compared with the un-doped one.

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  • 发布日期:  2015-03-27
  • 收稿日期:  2015-01-16
  • 网络出版日期:  2015-02-27
通讯作者: 陈斌, bchen63@163.com
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