| 초록 |
Sueprcapacitors, also known as electric double-layer capacitors (EDLCs) are electrical storage devices, which have a both high energy efficiency and power density. They can complement or replace secondary batteries in electrical storage and other applications, when high power delivery is needed. In this work, we conducted phosphoric acid activation of biomass precursors to manufacture highly mesoporous activated carbons. An effort to observe and compare the delivery of the power output characteristics was achieved with those of commercial activated carbons. The pore characteristics were analyzed at N2/77K isothermal adsorption using the Brunauer-Emmett-Teller and Barrett-Joyner-Halenda equations. In addition, the electrochemical characteristics were analyzed by means of an electrolyte of 1M SBPBF4/propylene carbonate, using a specific capacitance versus current density, cyclic voltammetry, and electrochemical impedance spectroscopy. |
