Oxygen-doped porous carbon electrode material with high pseudocapacitance activity and preparation method thereof

The invention discloses an oxygen-doped porous carbon electrode material with high pseudocapacitance activity and a preparation method thereof, and belongs to the technical field of electrochemical supercapacitors, resorcinol, a formaldehyde aqueous solution and ammonia water are uniformly mixed at room temperature, the mixture is polymerized by a hydrothermal method to obtain resorcinol-formaldehyde resin, and the resorcinol-formaldehyde resin is subjected to water/ethanol alternate cleaning, drying and low-temperature carbonization to obtain the oxygen-doped porous carbon electrode material with high pseudocapacitance activity. And activating with low-temperature caustic alkali. In the caustic alkali activation process, the sp3C structure is converted into the sp2C structure, and the conductivity of the material is improved; meanwhile, the carbon microspheres are converted into the porous sheet-shaped carbon material under the etching and activating actions of the caustic alkali, so that the specific surfac