The pyrolytic carbon produced on flexible graphite foil in chemical vapor deposition was observed by scanning electron microscope. The research shows that pyrolytic carbon is not only distributed on the surface of flexible graphite foils with the shape of cells, but also vapor grown carbon fibers are found. The initial carbon fibers have awl-shaped heads. With the growth of carbon fibers, the diameter of the fiber increases layer upon layer with a concentric circle structure. The vapor grown carbon fiber has a hemispherical head when the diameter exceeds 50μm.
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