▎ 摘　　要

NOVELTY - The composite material comprises a dispersion of nano-graphene sheet particles (0.1-150 wt.%) in a polyimide matrix. An average width of the nanographene sheet particles is 50-100 nm. The polyimide matrix is derived from a reaction product of a diamine compound and a dianhydride compound. The composite material has a wide angle X-ray diffraction peak at diffraction angle (2 theta ) of 5-7 degrees as measured using a copper-potassium radiation source at a wavelength of 1.54 Angstrom . USE - The composite material is useful in a flexible solar panel, a display screen, an energy storage device, a fuel cell membrane (all claimed) and a capacitor. ADVANTAGE - The composite material exhibits excellent thermal-oxidative stability, solvent resistance, superior tensile modulus, environmental stability, sheet resistance, sheet conductivity, damping ability and electrical, optical and mechanical properties. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a method of forming a nano-graphene sheet particle filled polyimide film; and (2) a nano-graphene sheet particle filled polyimide film.