Battery type hybrid supercapacitor based on polypyrrole and lead-lead sulfate

By Alguail, Alsadek A.; Al-Eggiely, Ali H.; Gvozdenovi?, Milica M.; Jugovi?, Branimir Z.; Grgur, Branimir N.
Published in Journal of Power Sources NULL 2016

Abstract

Abstract The electrochemically synthesized polypyrrole and lead-lead sulfate is examined as a potential electrodes for battery-type hybrid supercapacitors in acidic solution. The device exhibits battery-type behavior at low discharge rate, e.g. <0.5 A g?1, and supercapacitors-type behavior at a higher discharge rate. Discharge in the specific current range of ?0.6-2.27 A g?1 based on the active masses, can deliver capacity of 90-72 Ah kg?1, energy of 58-40 Wh kg?1 and power of 40-1350 W kg?1, with the specific capacitance of the cell in the range of 300-250 F g?1. The experimentally obtained values are compared with theoretical.

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