LiOH) and their combination (1 M 1: 1 v/v LiOH+ KOH, NaOH+ KOH and LiOH+ NaOH) in
contact with ZnFe2O4 nano-flake based electrodes is used as an empirical diagnostic tool to
pre-evaluate the performance of a supercapacitor prior to actual fabrication of the device.