ORGANIC-INORGANIC MATERIALS FOR FAST CHARGING-DISCHARGING PROCESSES IN ENERGY STORAGE DEVICES

摘要

The electrochemical properties of composite material consisting of poly(3,4-ethylenedioxythiophene) (Pedot) and iron hexa-cyanocobaltate (FehcCo) have been investigated for supercapacitors' application. The composite material Pedot/FehcCo was electrodeposited on titanium or carbon fabric substrate. Prepared electrodes were used in supercapacitors operating in nonaqueous electrolytes (1M KPF6, 1M LiPFg in ethylene carbonate with dimethyl carbonate mixture of solvents). The capacitance values were estimated by galvanostatic and cyclic voltammetry techniques. The material was investigated in symmetric two-electrode cell configuration. The material Pedot/FehcCo exhibits high capacitance values (~70 F cm"') and a good cycling performance with a high stability in the tested electrolytes.