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Synthesis of single-crystalline LiFePO4 with rhombus-like morphology

journal contribution
posted on 2014-11-28, 00:00 authored by Y Qiao, L Pan, Li He, Ludovic DumeeLudovic Dumee, Lingxue KongLingxue Kong, M Zhao, L Wang, Weimin Gao
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.

History

Journal

Ionics

Pagination

1 - 5

Publisher

Springer

Location

Heidelberg, Germany

ISSN

0947-7047

eISSN

1862-0760

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2014, Springer