a b s t r a c t For the first time, a new carbon–carbon composite electrode material for supercapacitors is prepared by simple KOH activation ofwaste newspaper. The amorphous nature and surface morphology of the carbon composite are investigated by X-ray diffraction (XRD), N2 adsorption/desorption and scanning electron microscopy. The surface area and pore diameter are 416m2 g−1 and 5.9…
Abstract We present, for the first time, a new material of symmetric electrochemical supercapacitor in which zinc oxide (ZnO) with carbon aerogel (CA) was used as active material. Physical properties of ZnO/CA composite were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). It was found that ZnO has single hexagonal structure and the grain size increases with inc…
a b s t r a c t For the first time activated carbon nanobeads have been synthesized for supercapacitor applications by a simple pyrolysis technique. TEM analysis suggests the size of the carbon nanobeads are around 40 nm and XRD measurement reveals an amorphous structure. The average surface area of the nanobeads by BET studies is measured to be 79.6 m2/g, which is higher than the previousl…