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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/18113
Title: Preparation and characterization of Li [Mn2-xFe x]O4 (x = 0.0-0.6) spinel nanoparticles as cathode materials for lithium ion battery
Authors: Singh P.
Sil, Anjan
Nath, Mala
Ray S.
Published in: Proceedings of Advanced Materials Research
Abstract: Nanosized powders in the system LiMn2-xFexO 4 (x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5 and 0.6) have been synthesized by sol-gel technique using citric acid as chelating agent. The effect of Fe substitution on the structure and surface morphology of spinel LiMn2O4 has been examined by X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM) and Electrochemical characteristics. The materials for all the compositions except x = 0.6 exhibit a phase pure cubic spinel structure as evident from the XRD analyses. Doping with Fe increases the crystallinity in the materials and decreases the average particle size. The surface morphology of the synthesized particles is spherical and polygonal type. Average particle size lies in the range of 60 to 400 nm. Improved capacity retention in rechargeable 4 V Li/LiMn2-xFexO4 cells has been observed when a small amount of manganese in the spinel cathode is replaced with iron. The first discharge capacities of LiMn2-xFexO4 (x = 0.0, 0.1, 0.2, 0.3) in a voltage range of 3 V to 4.3 V decreases as the x increases, however, the cyclic performance improves. © (2009) Trans Tech Publications.
Citation: Proceedings of Advanced Materials Research, (2009), 233- 238. Roorkee
URI: https://doi.org/10.4028/www.scientific.net/AMR.67.233
http://repository.iitr.ac.in/handle/123456789/18113
Issue Date: 2009
Keywords: Cathode materials
Electrochemical performance
Iron doped spinel
LiMn2O4
Lithium ion battery
Sol-gel method
XRD
ISBN: 087849328X; 9780878493289
ISSN: 10226680
Author Scopus IDs: 7403971769
7003754102
7103033909
7402322460
Author Affiliations: Singh, P., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
Sil, A., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
Nath, M., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
Ray, S., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
Corresponding Author: Sil, A.; Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India; email: asil1fmt@iitr.ernet.in
Appears in Collections:Conference Publications [CY]
Conference Publications [MT]

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