Preparation, stoichiometry and structure of fluorine intercalated graphite fibers

Abstract

Fluorine intercalated graphite fibers have been prepared from direct reactions of the heat-treated benzene derived vapor grown carbon fiber with elemental fluorine at temperatures between 330-614 °C. An attractive feature of the fiber as a pristine graphite is that it can readily be intercalated by fluorine with lower threshold of formation temperature and time. The compounds obtained at around 600 °C are of stage-1 and those obtained at lower temperature range between 330-380 °C are of stage-2. Mixed stage compounds are formed in the intermediate temperatures.The relation between stoichiometry and stage of these comoounds have been clarified in connection with crystal structure.