简介:Porousnanocarbonswithaverageparticlesize20–40nmweredevelopedusingbiowasteoilpalmleavesasaprecursor.Simplepyrolysiswascarriedoutat700°Cundernitrogenatmosphere.Obtainedporousnanocarbonsshowedexcellentporousnaturealongwithsphericalshape.Symmetricsupercapacitorfabricatedfromporousnanocarbonsshowedsuperiorsupercapacitanceperformancewherehighspecificcapacitanceof368F/gat0.06A/gin5MKOHwerereported.Italsoexhibitedhighstability(96%over1700cycles)andenergydensityof13Wh/kg.Lowresistancevalueswereobtainedbyfittingtheimpedancespectra,thusindicatingtheavailabilityofthesematerialsassupercapacitorselectrode.Thepresentedmethodiscosteffectiveandalsoinlinewithwastetowealthapproach.