| abstract |
The invention discloses a preparation method and application of a nitrogen-doped porous carbon material based on medium-rank coal. and acid solution, then it is mixed with nitrogen dopant by ball milling, and the obtained mixture is milled and mixed with activator, through a one-step temperature-programmed heating-cooling process of low-temperature activation and high-temperature pyrolysis, followed by pickling and filtration and drying step to obtain nitrogen-doped porous carbon material. The nitrogen-doped porous carbon material prepared by the invention has a pore structure in which a large number of mesopores and micro-mesopores coexist in an appropriate proportion, has excellent oxygen reduction electrocatalytic performance in the whole pH range, and can be used as a fuel cell cathode oxygen reduction reaction electrocatalyst. For the catalytic material, the raw materials used in the present invention have low cost and wide sources, and the preparation process is simple, efficient, and environmentally friendly. |