Paper Details

Effects of acid dopants on polymer gel electrolytes for Electric double layer capacitors or super capacitorsare reported in this work. Flouroboric Acid (HBF4), Para-toluene sulphonic acid (PTS) and perchloric acid (HClO4) aredoped in the polymer network of Acrylamide and thin films which are made by solution casting technique. The physicalcharacterization of the gel is done using FT-IR, SEM and thermal analysis while the electrochemical parameters of thesuper capacitor are evaluated by A.C. Impedance spectroscopy, Cyclic voltammetry and Galvanostatic charge dischargetest in the potential range of 0 to 1 V. The conductance of the gel is found to be in the order of 10-3to 10-4S/cm. TheEDLC with HClO4 dopant has better electrochemical stability than the EDLC comprising poly (AAm – HBF4) gel andpoly (AAm - PTS). This is due to the enhanced ability of trapping HClO4 in its matrix and this system can be a bettersystem of EDLC with high specific capacitance, high rate capability, cycling life upto a maximum of 103cycles with goodcoulombic efficiency and minimum IR losses. The EDLC with PAAm – HClO4exhibits highest power density (181 W/Kg)and energy density (2 Wh/Kg) compared to other HBF4 and PTS doped polymer gel electrolytes.This clearlydemonstrates that HClO4 doped gel electrolyte is a better candidate for supercapacitor applications.

B.V.Bhuvaneswari, D.Kalpana, S.Rajendran, “Investigations on Acid Doped Poly Acrylamide Based Gel Electrolytes for Supercapacitor Applications”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 5, Issue 19, pp. -, January 2018.