부산대학교 도서관

Chitosan (CH): poly(2-oxazoline) (POZ): ammonium thiocyanate (NH4SCN): glycerol electrolytes withdeveloped conductivity are organized using solution casting technique. The loading of 50 wt. % glycerolmaximized the conductivity to 1.58 103 S/cm. The simulations of electrochemical impedance spectroscopy(EIS) data with the electrical equivalent circuit (EEC) method are used to determine fundamentalion transport parameters. The diffusion coefficient (D) of 4.67 10-7 cm2 s1, mobility (l) of 1.82 10-5 cm2 V1 s, and carrier density (n) of 5.42 1020 cm3 are measured successfully for the highest ion conductingsystem. Dielectric properties such as dielectric constant, dielectric loss and electric modulus arestudied as a function of frequency. Conductivity and dielectric analysis are found to follow the sametrend. There are observable peaks in both e‘‘ and tand spectra. Various electrochemical tests are measuredfor the highest ion conducting sample. Transference numbers of ion (tion) and electron (te) for theCSPZNHSN5 are measured to be 0.8 and 0.2, respectively, which show that ions are the majority chargecarriers. The electrochemical stability of the CSPZNHSN5 which is measured by linear sweep voltammetry(LSV) was found to be 2.2 V. The electric double layer capacitor (EDLC) internal resistance is between68 X and 82 X. Using the GCD measurement, the capacitance, energy, and power density of the EDLC are100F/g, 14.5 Wh/kg, and 1500 W/kg.