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Electrochemical Properties of Nitrogen-Substituted Carbon and Organofluorine Compounds

Published online by Cambridge University Press:  10 February 2011

T. Nakajima ,
M. Koh  and
K. Dan
T. Nakajima
Affiliation:
Division of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Sakyo-ku, Kyoto, 606–01, Japan
M. Koh
Affiliation:
Division of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Sakyo-ku, Kyoto, 606–01, Japan
K. Dan
Affiliation:
Division of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Sakyo-ku, Kyoto, 606–01, Japan
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Abstract

The CxN samples(C14N-C62N) prepared with a nickel catalyst had the higher crystallinity and less pyridine-type nitrogens existing at the edge of graphene layers than CxN prepared in the absence of a catalyst. With increase in the deposition temperature of CxN, the cy-cleability for electrochemical intercalation-deintercalation of lithium ions was improved and the profile of the charge-discharge curve approached that of graphite due to increase in the crystallinity and decrease in the incorporated nitrogens. CxN-coated graphites demonstrated gradual increase in the potential at the last stage of lithium ion deintercalation process.

The effect of fluoroester-mixing in 1 M LiClO4-EC/DEC was also investigated at a low temperature. It was found that CHF2COOCH3 with a low molecular weight and a small number of fluorine atoms was effective as a mixing agent.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 496: Symposium Y – Materials For Electrochemical Energy Storage & Conversion II… , 1997 , 581
Copyright
Copyright © Materials Research Society 1998

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References

REFERENCES

1. Morita, M., Hanada, T., Tsutsumi, H., Matsuda, Y. and Kawaguchi, M., J. Electrochem. Soc. 139, 1, 227 (1992).Google Scholar
2. Weydanz, W. J., Way, B. M., van Buuren, T. and Dahn, J. R., J. Electrochem. Soc. 141, 900 (1994).Google Scholar
3. Way, M. and Dahn, J. R., J. Electrochem. Soc. 141, 907 (1994).10.1149/1.2054856Google Scholar
4. Ishikawa, M., Nakajima, T., Morita, M., Matsuda, Y., Tsujioka, S. and Kawashima, T., J. Power Sources 55, 127 (1995).Google Scholar
5. Nakajima, T. and Koh, M., Carbon 35, 203 (1997).10.1016/S0008-6223(96)00143-1Google Scholar
6. Pels, J. R., Kapteijn, F., Moulijn, J. A., Zhu, Q. and Thomas, K. M., Carbon 33, 1, 641 (1995).Google Scholar