Abstract: In this paper，coalbased porous carbon material with different specific surface area and pore size distribution was obtained by adjusting the proportion of KOH to coal based on Taixi anthraciteWhen the ratio of KOH to coal is 5∶1 at the temperature of 800 ℃ for activation of 2 h，the obtained material has the highest specific surface area and pore volume（3 275 m2/g，162 cm3/g）The adsorption amount of carbon dioxide at 0 ℃ and 100 kPa was 2371 %The material is doped with nitrogen by using urea as a nitrogen sourceCompound material was prepared through oxidationreduction reaction on the carbon material loaded with manganese，which is used for a negative electrode material of a lithium ion batteryIt exhibits good stability in chargedischarge cyclesThe nitrogen and manganese dioxide are helpful to improve the specific capacitance of the material