▎ 摘　　要

NOVELTY - The method involves selecting natural graphite powder is raw material, adding oxidizing agent to the raw material to prepare graphite oxide, where oxidizing agent is potassium permanganate and sodium nitrate. The de-ionized water dilution is added with the graphite oxide and dried with temperature about 90 to 95 degrees celsius. Hydrochloric acid is added to the mixture to obtain oxidized graphene. The oxidized graphene is kept in a tubular furnace and heated to obtain three-dimensional graphene. USE - Three-dimensional graphene preparation method. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical representation of three-dimensional grapheme preparation method. '(Drawing includes non-English language text)'