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A Study of the Electrical and Mechanical Properties of Alkali Metal Intercalated Graphite Fibers

Published online by Cambridge University Press:  15 February 2011

D.D. Dominguez ,
J.L. Lakshmanan ,
E.F. Barbano  and
J.S. Murday
D.D. Dominguez
Affiliation:
Code 6170, Naval Research Laboratory, Washington, D.C. 20375, USA.
J.L. Lakshmanan
Affiliation:
Code 6170, Naval Research Laboratory, Washington, D.C. 20375, USA.
E.F. Barbano
Affiliation:
Code 6170, Naval Research Laboratory, Washington, D.C. 20375, USA.
J.S. Murday
Affiliation:
Code 6170, Naval Research Laboratory, Washington, D.C. 20375, USA.
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Abstract

Individual graphite fibers (TP 4104B and GY-70) were intercalated with alkali metals using the two-zone vapor transport method commonly used to prepare alkali metal intercalated graphite. The progress of the reaction was followed in situ by measuring the electrical resistances of the fibers as the temperature difference (ΔT) between the fiber and the metal was decreased stepwise. These measurements showed that the ease and extent of intercalation are related to fiber graphitization. Without exposure to air, the temperature dependence of the resistances of the intercalated fibers were also measured from −196°C to 400°C. The measurements showed that the intercalated fibers have a metallic dependence on temperature. Tensile strength measurements on the intercalated fibers showed that intercalation of the heavy alkali metals is deleterious.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 20: Symposium H – Intercalated Graphite , 1982 , 63
Copyright
Copyright © Materials Research Society 1983

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References

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