| abstract |
The invention discloses a method for preparing a nitrogen-doped porous carbon nano material by using a biomass as a carbon source through a gel method and application thereof. The preparation method comprises the steps of selecting soybean dregs or soybeans as a carbon source and transition metal salt as a coagulant, and coagulating soybean milk obtained by soaking, grinding and boiling to form bean curd gel; and (3) carrying out vacuum freeze drying, high-temperature carbonization and activation in an inert atmosphere to obtain the nitrogen-doped porous nano carbon material embedded with the transition metal. The preparation method has the advantages of simple process operation, low cost and easy realization of large-scale commercial production. The nitrogen-doped porous nano carbon material prepared by the method has high graphitization degree, high mechanical strength and high conductivity, is embedded with metal nano particles, and can be applied to the fields of supercapacitors, lithium ion batteries, catalysis, adsorption and the like. |