Utilization of ketapang leaf (Terminalia Catappa L) waste as a supercapacitor electrode has been successfully carried out with variation concentration of ZnCl2 activator, namely 0,3 M, 0,5 M and 0,7 M. Carbon production was started from drying the ketapang leaves in the sun ray and a 110°C oven, pre-carbonization, ball-milling and mortar, sieving, chemical activation, molding, carbonizatio…