Supercapacitor performance gains from structural modification of carbon electrodes using gamma radiations

The performance of supercapacitors (SC) strongly depends on how their activated carbon (AC) electrodes were synthesized from precursor materials and pretreatments applied to them. This study investigates the effect direct filtered gamma radiations as AC. exposure doses used 0.1 kGy 6 kGy. high gamma-energy dose pretreatment broke randomly orientated graphitic crystal lattices inside AC particles disturbed existing functional group populations. radiation at 1 kGy, which contains a higher composition secondary electrons than pretreatment, yields with best overall SC performance. cell made showed specific capacitance 73.1 % (218.58 F g-1), energy 73.54 (10.96 W h kg-1) power 8.36 (155.67 compared sample without any pretreatment. explicitly shows benefit in field, produce decisively defect sites for gains