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Fluorine-intercalated carbon fibers III. A transmission electron microscopy study

✍ Scribed by A. Tressaud; M. Chambon; V. Gupta; S. Flandrois; O.P. Bahl

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 893 KB
Volume: 33
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(95)00088-u

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✦ Synopsis

A high resolution transmission electron microscopy study of fluorine-intercalated carbon fibers has been carried out on two types of host materials: high-temperature treated pitch-based and PANbased fibers. TEM images and corresponding

Fourier transforms have shown that only stage-l compounds and graphitic-type domains are detected in the experiment conditions. In particular, no interlayer spacing corresponding to higher staged materials have been noticed. The observed results can be correlated to the ratio of semi-ionic to covalent F-C bonding previously determined by XPS. The disorder mostly depends on the nature of the host fiber and on the amount of mobile species that may react with the graphene layers during the deintercalation process, which is favored by the high-vacuum conditions.

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