Natural graphite enhanced the electrochemical performance of Li3V2(PO4)3 cathode material for lithium ion batteries

  • Lu Lu Zhang
  • , Hua Bin Sun
  • , Xue Lin Yang
  • , Ming Li
  • , Zhen Li
  • , Shi Bing Ni
  • , Hua Chao Tao

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Natural graphite treated by mechanical activation can be directly applied to the preparation of Li3V2(PO4)3. The carbon-coated Li3V2(PO4)3 with monoclinic structure was successfully synthesized by using natural graphite as carbon source and reducing agent. The amount of activated graphite is optimized by X-ray diffraction, scanning electron microscope, transmission electron microscope, Raman spectrum, galvanostatic charge/discharge measurements, cyclic voltammetry, and electrochemical impedance spectroscopy tests. Our results show that Li3V2(PO4)3 (LVP)-10G exhibits the highest initial discharge capacity of 189 mAh g−1 at 0.1 C and 162.9 mAh g−1 at 1 C in the voltage range of 3.0–4.8 V. Therefore, natural graphite is a promising carbon source for LVP cathode material in lithium ion batteries.

Original languageEnglish
Pages (from-to)311-318
Number of pages8
JournalJournal of Solid State Electrochemistry
Volume20
Issue number2
DOIs
StatePublished - 1 Feb 2016
Externally publishedYes

Keywords

  • Cathode material
  • Lithium ion battery
  • Lithium vanadium phosphate
  • Natural graphite

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