Kalaiselvi, N. and Manthiram, A. (2010) One-pot, glycine-assisted combustion synthesis and characterization of nanoporous LiFePO4/C composite cathodes for lithium-ion batteries. Journal of Power Sources, 195. pp. 2894-2899.

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Abstract

Nanoporous LiFePO4/C composite cathodes have been synthesized by a novel one-pot, glycine-assisted combustion (GAC) method in presence of 2 wt.% Super P carbon in both Ar and 90% Ar–10% H2 atmospheres at 750 ◦C for a short time of 6 h. While the Ar atmosphere offers phase pure samples, the Ar–H2 atmosphere leads to the formation of impurity phases as indicated by X-ray diffraction data. The combustion-initiated expulsion of gases aids the formation of a nanoporous LiFePO4/C composite structure as evident from electron microscopic analysis, which could allow easy penetration of the electrolyte and realization of an electronic–ionic 3D network. The nanoporous LiFePO4/C sample synthesized in Ar atmosphere exhibits a high discharge capacity of 160mAhg−1 with 3% capacity fade in 50 cycles and high rate capability. With a short reaction time, the GAC method offers an energy efficient approach to synthesize high performance olivine LiFePO4/C composite cathodes.

Item Type:	Article
Uncontrolled Keywords:	Lithium-ion battery; Lithium iron phosphate; Combustion synthesis; Nanoporous composite
Subjects:	Lithium batteries
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	28 Feb 2012 11:57
Last Modified:	28 Feb 2012 11:57
URI:	http://cecri.csircentral.net/id/eprint/479

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