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Sodium and Lithium Intercalation Within The Layered Oxides Na(Li)xMo2O4

Published online by Cambridge University Press:  21 February 2011

J. M. Tarascon  and
S. Colson
J. M. Tarascon
Affiliation:
Bellcore, 331 Newman Springs Road, Red Bank, NJ 07701
S. Colson
Affiliation:
Chemistry Department, Rutgers University, Piscataway, NJ 08854
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Abstract

The structural, chemical and electrochemical behavior of the layered molybdate oxides Na(Li)xMo2O4 have been investigated. We found a reversible sodium intercalation process over the range of composition 0.5 < x < 1.9 for the NaxMo2O4 system with 5 single phase domains at x = 0.55, 0.9, 1-1.4, 1.6, and 1.9. We took advantage of the high mobility of sodium diffusion in this compound to exchange sodium for lithium at relatively low temperature (300°C) and to prepare crystallographically pure LixMo2O4. Electrochemical data for the Li system shows that this material, which reversibly intercalates up to 1.7 Li atoms at an average potential of 3.1 volts, is a new promising cathode material for secondary lithium batteries. The ease with which these new molybdate phases can be intercalated is not limited to the alkali metals, since we also were able to intercalate H2O molecules.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 135: Symposium M – Solid State Ionics I , 1988 , 421
Copyright
Copyright © Materials Research Society 1989

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