| 초록 |
In this study, 4,4‘-(hexafluoroisopropylidene) diphthalic anhydride (6FDA) and 2,2’-bis(trifluoromethyl)-4,4’-diaminobiphenyl (TFDB) to make activated carbon nanofiber electrodes for electrochemical doble layer capacitors (EDLCs). This polymer is a promising candidate for porous carbon precursor due to its high free volume of fluorine and good thermal stability. The electrodes were stabilized and carbonized according to the optimal heat treatment conditions for the heat treatment and then steam activated. The properties of carbon nanofibers were analysed by scanning electron microscopy (SEM), Raman spectroscopy and thermogravimetric analysis (TGA). The ELDCs electrochemical measurment were analysed by cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) . For the electrochemical performance measurement, 6 M KOH was used as the electrolyte. The carbon nanofiber electrode derived from 6FDA-TFDB exhibited a high specific capacitance and galvanostatic discharge times. |
