| 초록 |
Carbon aerogels were prepared by polycondensation of resorcinol with formaldehyde using sodium carbonate as a catalyst in ambient conditions, and they were used as an electrode of electrical double-layer capacitor. As a general trend, the ability of the electrodes to electrosorb ions depended on the microporosity, whereas the large pores (mesopores) had a strong influence on the kinetics of the electrosorption process. In this paper, the effect of resorcinol to catalyst ratio (R/C ratio) on pore size distribution, BET surface area, and electrochemical property of carbon aerogels was investigated by changing R/C ratio from 500 to 1500. In order to minimize volume shrinkage, solvent exchange was performed with acetone at 50 °C for 5 day. Carbon aerogel prepared at R/C ratio of 800 showed the highest BET surface area with average pore diameter of 7.9 nm. The morphology of carbon aerogel was investigated using SEM. The surface area and pore size were measured by BET. |
