Silicon-carbide-derived carbon (SiC-CDC) was prepared by heat treatment and chlorination of rice husk charcoal. Its specific surface area and micropore peak size were 1060 m(2)g(-1) and (similar to)0.75 nm, while those of a alpha-SiC-CDC, fabricated by chlorination of alpha-SiC, were 1350 m(2)g(-1) and similar to 0.60 nm, respectively. These SiC-CDCs exhibited excellent surface-area-normalized capacitance as capacitor electrodes. The internal resistance of the rice husk-based SiC-CDC was significantly lower than that of the alpha-SiC-CDC and comparable to that of commercial activated carbon.