▎ 摘　　要

NOVELTY - Improving laser induced graphite alkenyl capacitor specific capacitance comprises (a) providing a laser-induced graphene material, (b) performing in-situ joule heat treatment on the laser-inclined graphene material to obtain a laser-insulated graphene material with Joule thermal treatment, (c) obtaining a nano-level hole on the lithium-based graphene material treated by the Joule heating treatment, and (d) assembling. The laser induced graphene material is obtained by laser induced preparation of polyimide material and the polyimide material is doped polyimide material or undoped polyimide material. The doped polyimide material comprises polyimide material doped with hetero atoms, polyimide material doped with transition metal carbide or polyimide material doped with transition metal oxide. The doped polyimide material and un-doped polyimide material independently comprise at least one of polyimide film, polyimide paper, polyimide powder, polyimide fiber and polyimide cloth. USE - The laser induced graphite alkenyl capacitor specific capacitance is useful in portable handheld flexible electronic device. ADVANTAGE - The method: is economical, environmentally friendly and capable of decomposing amorphous carbon impurities in the laser-induced graphene material and forming more nano-level holes; has simple operation and excellent practical industrial application; and increases the effective active surface area. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for laser induced graphite-based capacitor.