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

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

1.
a Beijing Key Laboratory of Environmental Science and Engineering, School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, China;
2.
b National Development Center for High Technology Green Material, Beijing 100081, China

Corresponding author: Yue-Jiao Li,
Received Date: 16 January 2015
Available Online: 27 February 2015
Fund Project: 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)

A series of Nd³⁺-doped Li₃Nd_xV_2-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, Li₃Nd_0.08V_1.92(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, Li₃Nd_0.05V_1.95(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 Li₃Nd_0.08V_1.92(PO₄)₃ decreased compared with the un-doped one.
- Li₃V₂(PO₄)₃,
- Rheological phase reaction,
- Nd³⁺ dope,
- Electrochemical performance
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Nd³⁺-doped Li₃V₂(PO₄)₃ cathode material with high rate capability for Li-ion batteries