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Electrochemical intercalation of lithium in ternary metal molybdates MMoO4(M=Cu,Zn)

Published online by Cambridge University Press:  11 February 2011

Th. Buhrmester ,
N. N. Leyzerovich ,
K. G. Bramnik ,
H. Ehrenberg  and
H. Fuess
Th. Buhrmester
Affiliation:
University of Technology Darmstadt, Department of Materials Science, Structure Research, Petersenstrasse 23, D-64287 Darmstadt, Germany Fax: +49 6151 16–60 23; E-mail: [email protected]
N. N. Leyzerovich
Affiliation:
University of Technology Darmstadt, Department of Materials Science, Structure Research, Petersenstrasse 23, D-64287 Darmstadt, Germany Fax: +49 6151 16–60 23; E-mail: [email protected]
K. G. Bramnik
Affiliation:
University of Technology Darmstadt, Department of Materials Science, Structure Research, Petersenstrasse 23, D-64287 Darmstadt, Germany Fax: +49 6151 16–60 23; E-mail: [email protected]
H. Ehrenberg
Affiliation:
University of Technology Darmstadt, Department of Materials Science, Structure Research, Petersenstrasse 23, D-64287 Darmstadt, Germany Fax: +49 6151 16–60 23; E-mail: [email protected]
H. Fuess
Affiliation:
University of Technology Darmstadt, Department of Materials Science, Structure Research, Petersenstrasse 23, D-64287 Darmstadt, Germany Fax: +49 6151 16–60 23; E-mail: [email protected]
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Abstract

Ternary oxides with general formula MMoO4 (where M is a 3d-transitional metal) were characterized as cathode materials for lithium rechargeable batteries by galvanostatic charge-discharge technique and cyclic voltammetry. The significant capacity fading after the first cycle of lithium insertion/removal takes place for different copper molybdates (standard a-CuMoO4and high-pressure modification CuMoO4 –III) corresponding to the irreversible copper reduction and formation of Li2MoO4 during the first discharge. X-ray powder diffraction data reveal the decomposition of pristine ZnMoO4 by electrochemical reaction, lithium zink oxide with the NaCl-type structure and Li2MoO3 seem to be formed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 756: Symposia EE/FF – Solid-State Ionics – Materials for Fuel Cells and Fuel Processors , 2002 , EE6.7
Copyright
Copyright © Materials Research Society 2003

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References

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