Preparation method and application of nitrogen-doped graphene oxygen reduction catalyst with high specific surface area

The invention discloses a preparation method and application of a nitrogen-doped graphene oxygen reduction catalyst with a high specific surface area, and relates to a preparation method and application of an oxygen reduction catalyst. The invention aims to solve the problems that the nitrogen-doped graphene catalyst prepared by the existing method is harsh in preparation condition, complex in process, low in yield, not suitable for industrial large-scale production and not ideal in ORR activity. The method comprises the following steps: 1, preparing hydrogel; 2, preparing aerogel; 3, calcining; and 4, drying to obtain the nitrogen-doped graphene oxygen reduction catalyst with high specific surface area. The nitrogen-doped graphene oxygen reduction catalyst with the high specific surface area is used as an ORR catalyst of a fuel cell or a zinc air cell. The raw materials are wide in source, renewable and low in cost, the preparation method is simple, the yield is high, and large-scale industrial production is