Articles
  • Synthesis and electrochemical properties of LiFePO4/MWCNT nanocomposites for rechargeable lithium-ion batteries
  • Bo Jina,*, Guo En Suna, Hal-Bon Gub and Qing Jianga
  • a Key Laboratory of Automobile Materials, Ministry of Education, and College of Materials Science and Engineering, Jilin University, Changchun 130025, China b Department of Electrical Engineering, Chonnam National University, Gwangju 500-757, South Korea
Abstract
LiFePO4/multi-walled carbon nanotube (MWCNT) nanocomposites were synthesized by a hydrothermal method. MWCNT as a conductive additive were added to improve the electronic conductivity of pure LiFePO4 nanoparticles. The crystal structure and electrochemical properties of LiFePO4/MWCNT nanocomposites were investigated using X-ray diffraction, scanning electron microscopy, cyclic voltammetry, and charge/discharge tests. It is found that the electrochemical performance of pure LiFePO4 nanoparticles is increased due to the incorporation of MWCNT where LiFePO4/MWCNT nanocomposite (5 wt % MWCNT) shows the highest discharge capacity and stable cyclability at room temperature, and its discharge capacity is 142 mAh g−1 at a discharge current density of 0.05 mA cm−2.

Keywords: Nanocomposite, Lithium-ion battery, Multi-walled carbon nanotube.

This Article

  • 2010; 11(5): 533-538

    Published on Oct 31, 2010

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