DOI QR코드

DOI QR Code

Effect of Mo-doped LiFePO4 Positive Electrode Material for Lithium Batteries

  • Oh, Seung-Min (Department of Chemical Engineering, Hanyang University) ;
  • Sun, Yang-Kook (Department of Energy Engineering, Hanyang University)
  • Received : 2012.12.09
  • Accepted : 2012.12.23
  • Published : 2012.12.31

Abstract

Mo-doped $LiFePO_4$ was synthesized via co-precipitation method using sucrose as the carbon source. Structure, surface morphology, and the electrochemical properties of the synthesized olivine compounds were investigated using Rietveld refinement of X-ray diffraction data (XRD), scanning electron microscopy (SEM), and electrochemical charge-ischarge tests. Spherical morphology with the particle size of ${\sim}8{\mu}m$ authenticated the enhanced tap density and volumetric energy density of the synthesized materials. Charge-discharge behavior of $LiFePO_4$ and Mo-doped $LiFePO_4$ cells demonstrated a specific capacity of 130 and 145 mAh $g^{-1}$, respectively. Mo-doped $LiFePO_4$ cells exhibited an excellent discharge capacity at 96 mAh $g^{-1}$ at 7 C-rate.

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