NITROGEN-DOPED GRAPHITIZED CARBON MATERIAL AND PREPARATION METHOD

A nitrogen-doped graphitized carbon material and a preparation method thereof are provided. The preparation method includes the following steps: adding graphitized carbon, pyrrole, concentrated hydrochloric acid and a non-noble metal ion compound into water sequentially in that order and mixing uniformly to obtain a mixture, and finally adding an ammonium persulfate solution into the mixture to prepare polypyrrole-coated graphitized carbon, and performing high-temperature annealing treatment and washing on the polypyrrole-coated graphitized carbon to prepare the nitrogen-doped graphitized carbon material. The prepared nitrogen-doped graphitized carbon material includes a coating layer and a substrate, the coating layer is coated on a surface of the substrate, the coating layer is epitaxially grown graphitized nitrogen-doped carbon, and the substrate is graphitized carbon. The substrate and the coating layer of the nitrogen-doped graphitized carbon material have higher graphitization degree as a whole, and the stability of the carbon material is improved.