Carbon-based anode material having surface formed with slightly oxidized pores, and method for preparing same

A method for preparing a carbon-based anode material having a surface formed with slightly oxidized pores, comprising:

• S1:
• placing clay minerals in a three-necked bottle, adding water to prepare a suspension liquid, adding a nitric acid solution for activation, and regulating pH to 4-6;
• sequentially adding a cationic polymer and tris-1-(2-methylaziridinyl) phosphine oxide into the three-necked bottle containing the clay minerals, and stirring at indoor temperature for reaction;
• then, adding chitosan, stirring in a thermostatic water bath at 100° C.-120° C. for reaction, then cooling to the indoor temperature, carrying out extraction filtration, and washing with water until the pH is neutral, so that a mixed liquor is obtained;
• S2:
• placing, under the protection of an inert gas, the mixed liquor into a high-temperature heating furnace for carbonization treatment, so that a carbon-based material having a surface formed with slightly oxidized pores is obtained;
• and
• S3:
• mixing the carbon-based material having a surface formed with slightly oxidized pores with a conductive agent to obtain a mixture, then grinding the mixture, dispersing the ground mixture into absolute ethyl alcohol, adding a binder and potassium oxalate, and evenly stirring, drying and tabletting to obtain a carbon-based anode material having a surface formed with slightly oxidized pores.