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Synthesis, Structure, Lattice Dynamics and Electrochemistry of Lithiated Manganese Spinel, LiMn2O4

Published online by Cambridge University Press:  15 February 2011

C. Julien ,
A. Rougier  and
G. A. Nazri
C. Julien
Affiliation:
Laboratoire de Physique des Solides, CNRS-ERS 113, Universite Pierre et Marie Curie, 4 place Jussieu, 75252 Paris cedex 05, France
A. Rougier
Affiliation:
Physics and Physical Chemistry Department, General Motors R & D Center, RCEL, Warren, MI 48090–9055
G. A. Nazri
Affiliation:
Laboratoire de Physique des Solides, CNRS-ERS 113, Universite Pierre et Marie Curie, 4 place Jussieu, 75252 Paris cedex 05, France
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Abstract

We report synthesis, crystal structure, lattice dynamics, and electrochemical features of the lithiated manganese oxide spinel prepared through solid state reaction by careful selection of precursors and synthesis conditions. Elemental analysis shows that the material is a lithium-rich spinel phase. X-ray diffraction data and Rietveld refinement indicate formation of a single phase, impurity free, normal spinel of LiMn2O4. Lattice dynamics have been investigated by vibrational spectroscopy and group theoretical analysis has been carried out. Electrochemical performances of the lithiated spinel manganese oxide have been investigated, and the voltage profile of the cathode during lithium intercalation-deintercalation processes, close to equilibrium, has been obtained. The upper 4-volt plateau provides over 130 mA h/g with an excellent cyclability.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 453: Symposium R – Solid State Chemistry of Inorganic Materials , 1996 , 647
Copyright
Copyright © Materials Research Society 1997

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References

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