Synthesis of single-crystalline LiFePO4 with rhombus-like morphology

Yuqing Qiao, Lixia Pan, Li He, Ludovic Dumée, Lingxue Kong, Minshou Zhao, Limin Wang, Weimin Gao

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

In this investigation, carbon-coated LiFePO4 cathode materials were synthesized with a facile hydrothermal method. The structure and electrochemical properties of the materials were investigated by X-ray diffraction (XRD), Roman, transmission electron microscopy-energy dispersive spectroscopy (TEM-EDS), and electrochemical impedance spectroscopy (EIS). By adjusting the mixing concentration of starting materials, a single-crystalline LiFePO4 with an anisotropic rhombus morphology (Space Group: Pmnb No. 62) were successfully synthesized. In addition, the carbon coated on the surface of LiFePO4 material prepared has a lower ID/IG (0.80), which indicates an optimized carbon structure with an increased amount of sp2-type carbon. Electrochemical performance test shows that the carbon-coated LiFePO4 cathode materials have an initial discharge capacity of 146 mAh g-1 at 0.2C.

Original languageBritish English
Pages (from-to)295-299
Number of pages5
JournalIonics
Volume21
Issue number1
DOIs
StatePublished - 1 Jan 2015

Keywords

  • Cathodes
  • Electrochemical characterizations
  • Electrodes
  • Li-ion batteries

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