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Preparation, structure and electrical conductivity of graphite intercalation compound with titanium fluoride

✍ Scribed by T. Nakajima; K. Nakane; M. Kawaguchi; N. Watanabe

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 510 KB
Volume: 25
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(87)90223-5

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✦ Synopsis

The graphite intercalation compound (GIG) of titanium fluoride has been prepared in a fluorine atmosphere. The GICs prepared from natural graphite and pitch-based carbon fiber were mostly stage-2 compounds with repeat distance 11.28-11.59 A and composition Cll_15TiF4.1_6 >. The ESCA spectrum indicates that intercalated Tip,-anions are mainly in a bridged state. The slight decrease in the repeat distance with increasing fluorine pressure is ascribed to the nestling of Tie-anions in benzene rings of carbon layers due to the increase in nonb~dging TiF;-anion. X-ray powder d~f~action data indicate the high regularity in the orientation of intercalated species between carbon layers. The highest electrical conductivity was 2.4 x lo) km-', which is 13 times higher than that of pristine HOPG.

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