Manikandan, P. and Periasamy, P. (2014) Novel mixed hydroxy-carbonate precursor assisted synthetic technique for LiNi1/3Mn1/3Co1/3O2 cathode materials. Materials Research Bulletin, 50. pp. 132-140. ISSN 0025-5408

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Abstract

Novel mixed hydroxy-carbonate (MHC) precursors were used to synthesis technique of LiNi1/3Mn1/3Co1/ 3O2 cathode material. The powder X-ray diffraction (XRD) pattern of the synthesized LiNi1/3Mn1/3Co1/3O2 cathode materials exhibited a hexagonal cell with a = 2.8535 A˚ and c = 14.2040 A˚ . Fourier transform infrared spectroscopy (FT-IR) spectrum of MHC and LiNi1/3Mn1/3Co1/3O2 consistent with vibration modes of functional group. Presence of sub-micrometer particle size (200 nm) and highly crystalline morphology confirmed using scanning electron microscopy (SEM). X-ray photoelectron spectroscopy (XPS) suggested that oxidation state of the transition metals; Ni in +2, Mn in +4 and Co in +3 states, respectively in LiNi1/3Mn1/3Co1/3O2 cathode materials. Cyclic voltammograms (CV) revealed only one major redox couple at 4 V and suggested the absence of structural transitions from hexagonal to monoclinic structure. The Li vs. LiNi1/3Mn1/3Co1/3O2 cell delivered an initial discharge capacity of 175 mAh g�1 in the voltage range 2.5–4.6 V @ 0.1 C.

Item Type:	Article
Uncontrolled Keywords:	Layered compounds, Infrared spectroscopy, X-ray diffraction, Electrochemical properties
Subjects:	Lithium batteries Electrochemical Power Sources
Divisions:	UNSPECIFIED
Depositing User:	Dr. N Meyyappan
Date Deposited:	30 Dec 2013 11:46
Last Modified:	30 Dec 2013 11:46
URI:	http://cecri.csircentral.net/id/eprint/3047

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