▎ 摘　　要

NOVELTY - A preparation of three-dimensional printing nitrogen-doped high pyrrole graphene aerogel, involves (1) using Hummer method to prepare graphene oxide dispersion liquid, and using a refrigerated centrifuge to centrifuge and separate the graphene oxide dispersion liquid to obtain a graphene oxide hydrogel, (2) grinding the graphene oxide hydrogel in step (1), combining with three-dimensional printing technology, putting the ground graphene hydrogel into the needle tube, pushing the graphene hydrogel in the needle tube under a certain pressure by a needle tube piston, printing the graphene oxide microgrid structure layer by layer through a needle, and freeze-drying to obtain a graphene oxide microgrid aerogel, (3) annealing the graphene oxide microgrid aerogel in step (2) in a tube furnace to obtain a reduced graphene oxide microgrid aerogel, (4) placing the reduced graphene oxide microgrid aerogel of step (3) in a plasma device in a nitrogen atmosphere for surface treatment. USE - Preparation of 3D printing nitrogen-doped high pyrrole graphene aerogel on sodium metal cathode (claimed) used in sodium ion battery type. ADVANTAGE - The method has mild condition, simple preparation, combining with the 3D printing technology to fully use the raw material, the cost is low, and it has wide application prospect. The method changes the plasma device parameter to realize the reduction of graphene oxide micro grid aerogel so as to control the different nitrogen-doped micro grid graphene aerogel pyridine nitrogen and graphite nitrogen ratio, so that the growth of sodium metal deposition and sodium dendritic crystal is controlled. The nitrogen is doped in the carbon grid of reducing graphene oxide to improve the free carrier density, to promote the effective transfer of electron from the electrode to the reduced ion, and improve the conductivity of the electrode material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an application of three-dimensional (3D) printing nitrogen-doped high pyrrole graphene aerogel.