Oyedotun, Kabir OyeniranBarzegar, FarshadMirghni, Abdulmajid AbdallahKhaleed, Abubakar A.Masikhwa, T.M. (Tshifhiwa)Manyala, Ncholu I.2019-03-132019-01Oyedotun, K.O., Barzegar, F., Mirghni, A.A. et al. 2019, 'Examination of high porosity activated carbon obtained from dehydration of white sugar for electrochemical capacitor applications', ACS Sustainable Chemistry and Engineering, vol. 7, no. 1, pp. 537-546.2168-0485 (online)10.1021/acssuschemeng.8b04080http://hdl.handle.net/2263/68642In this research study, we have presented a simple two-step synthesis path to producing a cost-effective, high-porosity carbon material via acidic dehydration of white sugar. The electrochemical behavior of the activated sugar-based carbon material (ASC), activated at 400 °C (ASC 400) and adopted as a supercapacitor electrode in a symmetric device, demonstrated a limit specific capacitance of 242.67 F g–1 at 1 A g–1. The device also demonstrated a good efficacy as an established material for supercapacitors suitable for high-power applications with a satisfactory energy density of 19 Wh kg–1 and a power density of 750 W kg–1 at a gravimetric specific current of 1 A g–1. The results obtained provide a potential route to converting cheap refined biomass sources into highly porous nanostructured materials for energy-storage device applications.en© 2018 American Chemical SocietyCarbonizationSupercapacitor (SC)Activated sugar-based carbon material (ASC)H2SO4Na2SO4Specific capacitanceSpecific surface areaWhite sugarPostprint Article