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Journal of Solid State Electrochemistry

, Volume 22, Issue 9, pp 2837–2843 | Cite as

Effect of F-doping on the properties of LiFePO4-x/3Fx/C cathode materials via wet mechanical agitation-assisted high-temperature ball milling method

  • Xuetian Li
  • Zhongbao Shao
  • Kuiren Liu
  • Qing Zhao
  • Guangfu Liu
  • Binshi Xu
Original Paper
  • 102 Downloads

Abstract

LiFePO4-x/3Fx/C (x = 0, 0.03, 0.06, 0.09) were obtained via wet mechanical agitation-assisted high-temperature ball milling method. XRD, SEM, TEM, galvanostatic testing, EIS, and CV were applied to study the effects of the amount of F-doping on the structure and electrochemical performance of LiFePO4/C. The results showed that LiFePO3.98F0.06/C displayed the best electrochemical performance: its initial discharge capacities were 162.6 (0.1 C), 156.6 (0.5 C), 150.2 (1.0 C), 144.5 (2.0 C), 131.6 (5.0 C), and 115.8 mAhg−1 (10 C), respectively. Moreover, its discharge capacity was 110.5 mAhg−1 over 100 cycles with a capacity retention rate of 95.4% at 10 C-rate. F-doping is suggested to be an effective approach to enhance the electrochemical performance of LiFePO4.

Keywords

LiFePO4-x/3Fx/C Wet mechanical agitation-assisted High-temperature ball milling method Electrochemical performance F-doping 

Notes

Funding information

The authors gratefully acknowledge supports by the National Natural Science Foundation of China (No. 51704068), the China Postdoctoral Science Foundation (No. 2017M610184), and the Postdoctoral Foundation of Northeastern University (No. 20170305).

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of MetallurgyNortheastern UniversityShenyangPeople’s Republic of China

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