| 초록 |
For the preparation of attractive electrode materials for capacitors, KOH activation of cheap and available natural precursors, such as coals and pitch derived carbonaceous materials has often been used. KOH activation of cheap and available natural precursors, such as coals and pitch-derived carbonaceous materials has often been used. This method efficiently develops the micropores, and allows various pore size distributions. It has been shown that some large values of capacitance obtained with KOH activated carbons are related with important surface functionality. The presence of a large amount of oxygenated groups can be advantageous, either because they improve the wettability on the carbon surface or they contribute to an additional pseudocapacitance. Electrochemical properties were characterized by cyclic voltammetry (CV) and charge-discharge (CD) in 6M KOH electrolyte. |
