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Synthesis of Three Layer NaxCoO2 (x=0.3, 0.5, 0.6, 0.75, 1.0) and Superconductivity in Three Layer Na0.3CoO2•1.3H2O

Published online by Cambridge University Press:  01 February 2011

M.L. Foo ,
T. Klimczuk ,
L. Li ,
N.P. Ong ,
R.J. Cava ,
Q. Huang ,
J.W. Lynn  and
H.W. Zandbergen
M.L. Foo
Affiliation:
Dept of Chemistry, Princeton University Dept of Physics, Princeton University and Princeton Institute for the Science and Technology of Materials, NJ 08544. Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80–952 Gdansk, Poland
T. Klimczuk
Affiliation:
Dept of Chemistry, Princeton University Dept of Physics, Princeton University and Princeton Institute for the Science and Technology of Materials, NJ 08544. Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80–952 Gdansk, Poland
L. Li
Affiliation:
Dept of Chemistry, Princeton University Dept of Physics, Princeton University and Princeton Institute for the Science and Technology of Materials, NJ 08544. Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80–952 Gdansk, Poland
N.P. Ong
Affiliation:
Dept of Chemistry, Princeton University Dept of Physics, Princeton University and Princeton Institute for the Science and Technology of Materials, NJ 08544. Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80–952 Gdansk, Poland
R.J. Cava
Affiliation:
Dept of Chemistry, Princeton University Dept of Physics, Princeton University and Princeton Institute for the Science and Technology of Materials, NJ 08544. Faculty of Applied Physics and Mathematics, Gdansk University of Technology, Narutowicza 11/12, 80–952 Gdansk, Poland
Q. Huang
Affiliation:
Center for Neutron Research, NIST, Gaithersburg, MD 20899
J.W. Lynn
Affiliation:
Center for Neutron Research, NIST, Gaithersburg, MD 20899
H.W. Zandbergen
Affiliation:
National Centre for HREM, Department of Nanoscience, Delft University of Technology, Rotterdamseweg 137, 2628 AL Delft, The Netherlands
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Abstract

The synthesis of three layer sodium cobalt oxide, NaxCoO2 (x=0.3, 0.5, 0.6, 0.75 and 1.0) is reported. For x=0.6, 0.75, and 1.0, conventional solid-state synthesis was employed. x=0.3 and 0.5 were obtained via oxidative deintercalation of sodium at room temperature. x=0.3 can be hydrated to Na0.3CoO2•1.3H2O which is superconducting with a Tc of 4.3 K. Although having the same chemical stiochiometry as the previously reported two layer superconductor, it has a different stacking sequence of CoO2 layers making it structurally distinct. Crystals of three layer NaCoO2 show triangular morphology compared to hexagonal morphology for two layer Na0.7CoO2.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 848: Symposium FF – Solid-State Chemistry of Inorganic Materials V , 2004 , FF6.11
Copyright
Copyright © Materials Research Society 2005

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References

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