Synthesis and characterization of carbon fibrils formed by stacking graphite …

Abstract. Carbon fibrils with length of 2–3 lm formed by stacking graphite sheets of 10–40 nm in thickness along the h001i direction were prepared by pyrolysis of tetrahydrofuran at 600 C in the existence of metallic nickel. The spacing of adjacent sheets concentrated on 3.8 nm and 50 nm. Metallic nickel played a catalytic role in the formation of carbon fibrils, and a possible formati…