▎ 摘　　要

NOVELTY - An energy collection device comprises a metal copper foil, a conductive silver paste and carbon nanotube graphene aerogel to prepare an energy collection device negative electrode according to a sandwich structure, a foamed nickel, which is connected with a metal wire to serve as a positive electrode, a sodium chloride solution, which is used as an electrolyte, and polyvinylidene fluoride used as an outer shell. USE - Energy collection device. ADVANTAGE - The energy collection device has high stability, flexibility, elasticity and mechanical performance, and simple manufacturing process. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the energy collection device using carbon nanotube graphene aerogel as a negative electrode material, which involves: (1) dispersing carbon nanotubes in deionized water, adding a surfactant, and ultrasonically dispersing to prepare a carbon nanotube dispersion, preparing a graphene oxide solution by improved Hummers method, centrifugally washing, dialyzing to neutral, then freeze-drying to a solid, and adding a solvent to make a graphene oxide dispersion; (2) mixing the carbon nanotube dispersion and the graphene oxide dispersion according to the mass ratio in step (1), adding a reducing agent, and performing ultrasonic dispersion to form a uniform mixed liquid, where the mass ratio of graphene oxide to carbon nanotubes is (4-10):1; (3) putting the mixed solution obtained in step (2) into a quartz container, putting the quartz container into a hydrothermal kettle liner, finally putting the hydrothermal kettle liner into the hydrothermal kettle and carrying hydrothermal reaction to form a hydrogel; (4) dialyzing and freeze-drying the hydrogel formed in step (3) into an aerogel to obtain a carbon nanotube graphene aerogel; and (5) preparing the metal foil, the conductive agent and the aerogel into the negative electrode of the energy collection device according to the sandwich structure, connecting the nickel foam to the metal wire as the positive electrode of the device, preparing the PVDF material into a flexible device outer shell, injecting the electrolyte, filling the positive electrode and the negative electrode, and using an annular array for packaging.