Studies on singular electrochemical performances at low potential of new type fibrous nanocarbon

Fibrous nanocarbons were synthesized at low temperature by catalytic decomposition of hydrocarbons and carbon monoxide. They were then characterized by micro-structural and electrochemical techniques. It was found that the as-prepared nanocarbons could be classified into platelet, herringbone and tubular morphologies. The highest tap densities (70-90%) were observed for platelet morphologies. These were comparable with conventional graphite, and correlated with the high degree of graphitization that is associated with fast reduction in a H₂/He flow. The electrochemical discharge profiles of the platelet morphologies were similar to that of material graphitized at >2400 °C. Such materials may be acceptable alternatives to conventional synthetic graphites.