The invention provides a preparation method of a
nitrogen-doped
porous carbon material based on
citric acid transition /
alkali metal complex salt. The preparation method comprises the following steps:taking the
citric acid transition /
alkali metal complex salt as a
carbon source, in the
atmosphere containing
ammonia gas, performing heat treatment for 1-24h under the temperature of 500-1,000 DEG C;after cooling, performing
acid washing to remove impurities such as
metal, and then washing with water to remove
excess acid solution to neutral, and obtaining the
nitrogen-doped
porous carbon material after
drying. The preparation method provided by the invention is simple and no pore-forming agent is needed, the preparation method is easy to operate, raw materials are wide in source, the methodis green and
environmentally friendly, low in cost, is beneficial to realize larger-scale industrialized production, the prepared
nitrogen-doped
porous carbon material has the advantages that the nitrogen-doped porous carbon material has a multi-stage hole structure, a
lamellar structure containing holes and has obvious
graphite lattice fringes, the specific surface area is large, and the nitrogen-doped porous carbon material is rich in nitrogen heteroatoms and
oxygen reduction activity point locations, has the good electrical
catalysis oxygen reduction performance and stable performance, canbe used for preparing
electricity catalysis oxygen reduction
electrode and other catalyst carriers.