Novel electrolyte for zinc–polyaniline batteries

Electrochemical behavior of zinc and polyaniline (PANI) electrode polymerized from 0.1 M HCl and 0.1 M aniline on graphite electrode, in 0.2 M ZnCl 2 and 0.50 M NH 4Cl (chloride electrolyte) and with addition of 0.33 M Na-citrate (chloride/citrate electrolyte) were investigated. In the chloride/citr...

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Bibliographic Details
Published in:Journal of power sources 2006-10, Vol.160 (2), p.1447-1450
Main Authors: Jugović, B.Z., Trišović, T.Lj, Stevanović, J., Maksimović, M., Grgur, B.N.
Format: Article
Language:English
Subjects:
Applied sciences
Batteries
Chloride
Citrates
Dendrites
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
Polyaniline
Zinc
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Summary:Electrochemical behavior of zinc and polyaniline (PANI) electrode polymerized from 0.1 M HCl and 0.1 M aniline on graphite electrode, in 0.2 M ZnCl 2 and 0.50 M NH 4Cl (chloride electrolyte) and with addition of 0.33 M Na-citrate (chloride/citrate electrolyte) were investigated. In the chloride/citrate comparing with chloride containing electrolyte for the zinc electrode negative shift of the open circuit potential of 150 mV, decreases of exchange current density for more than order of magnitude and increase of cathodic Tafel slope, due to the zinc ions complexation, were observed. In citrate/chloride electrolyte zinc dendrite formation were completely suppressed. PANI electrodes show better discharge characteristic in chloride/citrate electrolyte with determined maximum discharge capacity of 164 mAh g −1.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2006.02.096