| 초록 |
In recent years, electrochemical supercapacitors have aroused wide advantages due to strong demand for flexible, portable, and lightweight energy devices. Supercapacitors are promising power source for automotive applications, have many advantages compared to traditional capacitors and secondary batteries such as high power density, environmental safety, high rate capability, long durability, and long cycle life. Based on the electrochemical charge-discharge mechanism, electrochemical supercapacitors can be fallen into two categories. First, electrochemical double-layer capacitors, which are due to charge-discharge separation, second pseudo capacitors, which are derived from redox reactions. Polyaniline (PANI) nanotubes have great potential electrical application in supercapacitor electrode material. For the preparation of conducting polymer nylon 6,6/polyaniline (PANI) core-shell nanofibers with high electrical conductivity, nylon 6,6/polyaniline (PANI) core-shell nanofibers composite webs were fabricated by in situ polymerization of aniline using the electrospun nylon 6,6 fiber as a template. The as-prepared nylon 6,6/PANI core-shell nanofibers were thoroughly washed and sonicated with distilled water. The morphology of nylon 6,6/PANI core-shell nanotubes has been carefully analyzed by field emission scanning electron microscopy. The electrochemical performances of nylon 6,6/PANI core-shell nanofibers were examined using cyclic voltammetry (CV) and galvanostatic charge/discharge test, and electrochemical impedance spectroscopy (EIS) analysis. |
