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http://dx.doi.org/10.5229/JECST.2012.3.4.172

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)
Publication Information
Journal of Electrochemical Science and Technology / v.3, no.4, 2012 , pp. 172-177 More about this Journal
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.
Keywords
Co-precipitation; Doping; Electrochemical properties; Lithium-ion Battery; Olivine;
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