Abstract
Herein the author introduces our recent research on a mechanical grinding of natural graphite particles and its compound. In the first topic, we propose a production scheme for conductive films composed of thin graphite sheets with high crystallinity and polymeric resin. Crystalline graphite sheets are successfully produced from natural graphite powder by solution-phase synthesis of graphite intercalation compounds （GICs）, following a wet planetary ball milling under mild conditions. Some composite films derived from the phenolic resin and ground products of GIC display much higher electrical conductivities compared to the film from the feed graphite particles while using a small amount of graphite sheets. This composite film will be applied to functional plywood which produces constant heat by applying a voltage to the composite film between wood sheets. In the second topic, we produce high-crystallinity graphite particles having high specific surface area by means of planetary ball milling under the well-controlled atmosphere. Well-defined PtCl4-GIC is synthesized by only use of such graphite particles. The resulting GIC is a candidate precursor for the hydrogenation catalyst.
