Process for production of graphite flakes and films via low temp

Details Process for production of graphite flakes and films via low temp Process for production of graphite flakes and films via low temp

1991-01-10

1992-09-01

Kunemund, Robert

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

423450, 423453, 423445, C01B 3102

Patent

active

051437090

ABSTRACT:
Electrically conductive carbon flakes and films are prepared in high yield by the pyrolysis of cyclic aromatic hydrocarbons, optionally halogenated, in the presence of a dehydrogenating agent at about at least 800.degree. C. Flakes of thicknesses up to 20 .mu.m and lengths up to 1 cm on a side are metal-like in appearance and have a conductivity of about 200-300 S/cm at room temperature. By heat treatment to 2600.degree. C., graphitic order is improved and the conductivity rises to .apprxeq.10000-15000 S/cm.

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Inagaki et al., "Formation of Flaky Graphite Single Crystals by Chemical Transport", Carbon, vol. 9, No. 1, (Jan. 1971), pp. 94 to 96.

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