Journal
BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA
Volume 30, Issue 1, Pages 153-160Publisher
CHEM SOC ETHIOPIA
DOI: 10.4314/bcse.v30i1.15
Keywords
Supercapacitors; Conducting polymers; Lignin
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Funding
- Knut and Alice Wallenberg Foundation
- International Science Program (ISP), Sweden
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Using simple electrosynthesis methods a single and bilayer of conducting polymers, polypyrrole and poly(o-aminophenol) with biopolymer lignin hybrid composites were formed on gold electrodes. The specific capacitance of the single polymer-lignin composite value of 400 F/g obtained from galvanostatic charge-discharge experiment at 1 A/g is improved to a value of 514 F/g in the bilayer polymer-lignin composite systems. The charge capacity is also improved from 61 mAh/g to 121 mAh/g by forming a bilayer of conducting polymers. Moreover, the charge retention during self-discharge is improved in the bilayer system.
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