Graphite thick film and preparation method and application thereof

The invention relates to a graphite thin film and a preparation method thereof. The graphite thick film is a thick film of a layered stacked structure. The longitudinal heat conductivity coefficient of the graphite thick film is 13-25 W/(m.k); and the graphitization degree of the graphite thick film is 0.001 to 0.07. The graphite thick film disclosed by the invention has the characteristics of high longitudinal heat conductivity coefficient, high graphitization degree, high film forming rate and good mechanical property. 本公开涉及一种石墨薄膜及其制备方法，所述石墨厚膜为层状堆叠结构厚膜；所述石墨厚膜的纵向导热系数为13～25W/(m.k)；所述石墨厚膜的石墨化程度为0.001～0.07。本公开的石墨厚膜纵向导热系数高，石墨化程度高，具有成膜率高、机械性能好的特点。