Open AccessUrea and sucrose assisted combustion synthesis of LiFePO4/C nano-powder for lithium-ion battery cathode application
Author(s) -
E. Hari Mohan,
V. R. Siddhartha,
R. Gopalan,
Tata N. Rao,
Dinesh Rangappa
Publication year - 2014
Publication title -
aims materials science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.367
H-Index - 16
eISSN - 2372-0484
pISSN - 2372-0468
DOI - 10.3934/matersci.2014.4.191
Subject(s) - materials science , scanning electron microscope , fourier transform infrared spectroscopy , analytical chemistry (journal) , raman spectroscopy , transmission electron microscopy , lithium ion battery , cathode , thermogravimetric analysis , chemical engineering , battery (electricity) , nanotechnology , chemistry , composite material , chromatography , power (physics) , physics , optics , quantum mechanics , engineering
In this paper, we are reporting a combustion method to prepare carbon coated LiFePO4 nanoparticles using urea as fuel and sucrose as carbon source. The process involves exothermic decomposition of a viscous liquid, containing fuel to oxidizer molar ratio of 1:1 at 300 ℃, followed by heat treatment at 600 ℃ for 6 h, under Ar (95%) and H2 (5%) mixed gas atmosphere. The resultant products are characterized by Thermogravimetric analysis (TG-DSC), Field emission-scanning Electron microscopy (SEM), Transmission electron microscopy (TEM), X-Ray diffraction (XRD), Raman Spectroscopy, Fourier transformation infrared spectroscopy (FTIR), and Moss-Bauer spectroscopy. The investigation reveals that the prepared sample has ordered olivine structure|with average crystallite size in the range of 30-40 nm. The SEM and TEM images show porous network type morphology with the size of the individual particles in range of 30-40 nm with spherical and oval shape morphology. The cathode obtained by combustion method exhibits a high discharge capacity (~156 mAhg-1) with a good cyclic performance and rate capability