| 초록 |
The Supercapacitors can be alternative approach to solving increasing power demands because they can have higher power and transport higher energy compared to batteries. There are two conditions to improve electrochemical performance. First, electrode materials have high surface area or pseudo-active species. Second, high electrical conductivity is important. One of the most promising electrode materials is ordered mesoporous carbon because of its huge specific surface area and pseudo-active sites. However, ordered mesoporous carbons have relatively low electrical conductivity due to amorphous phase. To improve electrical conductivity, we control carbonization temperature of ordered mesoporous carbon. In our study, ordered mesoporous carbons were synthesized by hard template method through impregnation the carbon precursor into the template(SBA-15) then carbonization at 900℃ ~ 1450℃. The as-synthesized materials were characterized by XRD, N2-sorption isotherm, Raman, and SEM. |
