Heteroatom doped cobalt metal catalyst and preparation method thereof

The invention discloses a heteroatom doped cobalt metal catalyst and a preparation method thereof, and belongs to the field of catalyst synthesis technology and application. The method for preparing the cobalt metal catalyst by heteroatom doping comprises the following steps: dispersing and dissolving biomolecules in a solution, sequentially adding a cobalt salt and an organic ligand, stirring, drying, and directly carbonizing at a high temperature to prepare the heteroatom (nitrogen, phosphorus and sulfur) doped cobalt metal catalyst in one step. According to the catalyst disclosed by the invention, the complete morphology is kept; meanwhile, the catalyst has a high specific surface area, a hierarchical porous structure and good methanol resistance and stability; and the preparation method is simple, the raw materials are easy to obtain, the price is low, the obtained catalyst shows remarkable fuel cell cathode oxygen reduction reaction (ORR) activity in an alkaline medium, the good method is provided for ex