| 초록 |
A major advantage of highly crosslinked, organic aerogels was the ability to transform many of these materials into electrically conductive carbon aerogels. Carbon aerogels had been formed as monoliths, microspheres, irregularly-shaped powders, and thin film composites. In all cases, the carbon aerogels retained their high surface area (400–800 m2/g) and ultrafine cell/pore size (＜100 nm). In this work, carbon aerogels were being prepared as electrode materials for electric-double layer capacitors (EDLCs), which were derived from the carbonization of resorcinol-formaldehyde (RF) aerogels using sodium carbonate as a catalyst. The carbon aerogel structure was studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and nitrogen adsorption. The synthesis, structure–property relationships, and performance of the electrodes are also examined. As a result, the carbon aerogels had found a number of electrochemical applications that exploited their monolithic structure, high surface area, controllable pore size, and low electrical resistance. The structure and properties of carbon aerogel electrodes depended upon synthesis conditions and carbonization temperature. |
