Abstract
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 m2g−1 and ∼0.75 nm, while those of a α-SiC-CDC, fabricated by chlorination of α-SiC, were 1350 m2g−1 and ∼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 α-SiC-CDC and comparable to that of commercial activated carbon.
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