a b s t r a c t Microporous activated carbons were prepared by microwave heating petroleum coke with potassium hydroxide as activation agent.Microporous activated carbons were characterized by infrared spectro- scopy,X-ray diffraction and nitrogen adsorption/desorption isotherms. Electrochemical properti esofan electric double layer capacitorus using microporous activated carbonas electrode…
a b s t r a c t Microporous activated carbons were prepared by microwave heating petroleum coke with potassium hydroxide as activation agent.Microporous activated carbons were characterized by infrared spectro- scopy, X-raydiffraction and nitrogen adsorption/desorption isotherms. Electrochemical properties of an electric double layer capacitor using microporous activated carbonas electrode …
a b s t r a c t Porous carbon nanotubes (CNTs) were directly synthesized for the first time by arc discharge in the presence of CO2. Supercapacitor was fabricated with the addition of CNTs synthesized in different medium to the polarizable activated carbon (AC) electrode as conducting material for comparison purpose. The electrical properties of the AC/CNTs composite are systematically investi…
A B S T R A C T Activated carbons (ACs) were prepared by microwave-assisted heat treatment of petroleum coke with KOH as activation agent, and characterized by infrared spectroscopy and nitrogen adsorption technique with the aim of studying the effect of activation time on the properties of ACs for electrodes in electric double layer capacitors (EDLCs). The electrochemical properties of AC e…