Carbon composite, and preparation method and use thereof

Abstract

Provided are a carbon composite and a preparation method thereof. The preparation method includes: distilling a bio-tar to obtain a distilled substrate; mixing the distilled substrate and a biochar material to obtain a polymerization starting material; polymerizing the polymerization starting material to obtain a polymer; and mixing the polymer with an activator to obtain a mixture and subjecting the mixture to activation to obtain the carbon composite; wherein the distilling is conducted at a temperature of 120° C. to 150° C.; the activator includes sodium bicarbonate, and a mass ratio of the polymer to the activator is in a range of 1:1 to 1:4; and the activation is conducted at an activation temperature of 700° C. to 800° C. in an anoxic atmosphere for 1 h to 2 h, and the activation temperature is obtained by heating at a speed of 5° C./min to 10° C./min.