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Low Potential Li Insertion in Transition Metal Oxides

Published online by Cambridge University Press:  10 February 2011

F. Leroux  and
L. F. Nazar
F. Leroux
Affiliation:
University of Waterloo, Department of Chemistry, Waterloo, Ontario Canada N2L 3G1; lfnazar@uwaterloo.ca
L. F. Nazar
Affiliation:
University of Waterloo, Department of Chemistry, Waterloo, Ontario Canada N2L 3G1; lfnazar@uwaterloo.ca
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Abstract

Low-potential Li insertion materials comprised of molybdenum oxides (AxMoO3) have been prepared by a “chimie douce” route. Li insertion below 200 mV is associated with dramatic transformation of the structure, leading to a material which displays good cyclability with a high reversible specific capacity of 940 mA/g in the voltage window 3.0–0.005V (volumetric capacity of 4000 mAh/cc), albeit with notable polarization on charge. The structural and compositional changes on discharge to 200 mV have been studied by a combination of XRD, and XAS. The interlayer ions have also been exchanged for Sn, and the electrochemical characteristics of these materials are compared with the alkali derivatives.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 496: Symposium Y – Materials For Electrochemical Energy Storage & Conversion II… , 1997 , 601
Copyright
Copyright © Materials Research Society 1998

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References

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