▎ 摘　　要

NOVELTY - Preparing self-supporting graphene carbon conductive network material comprises (i) diluting concentrated hydrochloric acid, adding tetraethyl silicate dropwise, then adding graphene solution, stirring until the solution is uniform, allowing to stand and sonicating, (ii) drying the precipitate and then sintering under inert atmosphere, (iii) adding the prepared sample into hydrofluoric acid for etching, washing and drying, and (iv) pressing the dried sample into a sheet and cutting to obtain final product. USE - The self-supporting graphene carbon conductive network material is useful as active material for cathode of potassium ion battery (claimed). ADVANTAGE - The method: has simple process, and low energy consumption; and utilizes cheap and easily available raw materials.