Electrochemical reversibility of the polyaniline/organodisulfide composite cathode containing an organomonothiol

Organomonothiol compounds with thiol group attaching to a conjugated ring were used to make a polyaniline/2,5-dimercapto-1,3,4-thiadiazole (PAn/DMcT) composite cathode. Cell charge-discharge studied showed that the reversibility and capacity were improved greatly owing to the addition of these organomonothiols. A possible reason is that the organomonothiols can control the extent of polymerization of DMcT during the charge process. The compatibility and the interaction between PAn and DMcT or poly-DMcT were the main factors influencing the catalytic effect of PAn on the DMcT redox reaction.