Synthesis and Characterization of LiMn2O4 Nanoparticles Using Citric Acid as Chelating Agent

Abstract:

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Nanocrystalline LiMn2O4 powder was synthesized by sol-gel method using citric acid as a chelating agent. The powders were characterized by X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Differential scanning calorimetry (DSC), Differential thermal analysis (DTA), Impedance spectroscopy (IS) and Electrochemical measurements. The powder particles having slight agglomeration characteristics were found to have prismatic morphology and a wider size distribution from 50 nm to 200 nm, which provides good packing density of the material. The electrical conductivity of the powder at room temperature is in the order of ~10-5 S/cm. The structural stability of LiMn2O4 cubic spinel over the temperature range of battery operation was assessed. Electrochemical performance of the material shows a discharge capacity of ~130 mAh/gm.

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Periodical:

Edited by:

S. Ray, S.K. Nath, A. Kumar, R.C. Agarwala, V. Agarwala, G.P. Chaudhari, B.S.S. Daniel

Pages:

227-232

DOI:

10.4028/www.scientific.net/AMR.67.227

Citation:

G. Singh et al., "Synthesis and Characterization of LiMn2O4 Nanoparticles Using Citric Acid as Chelating Agent", Advanced Materials Research, Vol. 67, pp. 227-232, 2009

Online since:

April 2009

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Price:

$35.00

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