Preparation method of mesoporous zinc-nitrogen-doped carbon oxygen reduction catalyst

The invention discloses a method for preparing a mesoporous zinc-nitrogen-doped carbon oxygen reduction catalyst. The method comprises the following steps of fully and uniformly mixing a precursor o-phenylenediamine, a metal source zinc chloride and a hard template agent silicon dioxide to obtain a material A; adding ammonium persulfate into the solution, fully stirring, standing, centrifuging theobtained solution, and drying to obtain a material B; transferring the material B into a porcelain boat, putting the porcelain boat into a tubular furnace, heating from room temperature to 300 DEG Cwithin 55 minutes under the protection of inert gas, keeping the temperature for 60 minutes, heating to 900 DEG C at a heating rate of 3 DEG C/min, keeping the temperature for 120 minutes, and naturally cooling to room temperature to obtain a material C; and transferring the material C into a container, adding an acidic solution, soaking for 24 hours, washing with high-purity water until the filtrate is neutral, and drying