Abstract
Graphite intercalation compounds of fluorine and LiF were prepared from several carbon materials. The 1st stage compounds with repeat distances of 9.38–9.44 Å were prepared from natural graphite, while graphitized petroleum coke gave a 2nd stage compound with a repeat distance of 12.7 Å. A compound of polyacrylonitrile(PAN)-based carbon fiber showed high stability in air, decomposing at 407 °C. The a-axis electrical conductivities were 2.0 × 10 5 Ω −1 cm −1 between 9 and 13 wt.% of intercalant for the compounds of pyrolytic graphite, and (8–9) × 10 3 Ω −1 cm−1 in the 7 – 14 wt.% range for those of PAN-based carbon fiber. Thermogravimetric study revealed that the intercalation reaction occured below 100°C.
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