Preparation method of nitrogen-doped two-dimensional carbon nanosheet

The invention relates to a preparation method of a nitrogen-doped two-dimensional carbon nanosheet, which comprises the following steps: ultrasonically dissolving glucose, urea and sodium dodecyl benzene sulfonate (SDBS) in deionized water, and carrying out hydrothermal reaction; and uniformly mixing the product with KOH in a small amount of deionized water according to a certain mass ratio, and conducting complete drying in a drying oven; and finally, carrying out gradient heating in a tubular furnace, conducting activating and carbonizing, and washing a product after high-temperature pyrolysis with hydrochloric acid and deionized water until the product is neutral, and conducting drying to obtain the nitrogen-doped two-dimensional carbon nanosheet material. The nanosheet material is simple in synthesis method, has special morphology and excellent electrochemical performance, and is very suitable for being used as an electrode material and applied to the field of novel secondary batteries. 本发明涉及一种氮掺杂二维碳纳米片的制