Journal
PLASTICS RUBBER AND COMPOSITES
Volume 51, Issue 5, Pages 240-249Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14658011.2021.1981090
Keywords
Polyaniline; polyvinyl alcohol; supercapacitor; specific capacitance; electrode material
Categories
Funding
- Govt of Kerala through E-grants
Ask authors/readers for more resources
The composites of polyaniline and polyvinyl alcohol prepared through in-situ polymerization exhibit high electrical conductivity and superior electrochemical performance as supercapacitor electrode materials. SEM analysis confirms the growth of coral-like nanowires of polyaniline within the polyvinyl alcohol matrix, allowing efficient electrochemical reactions. These composites show excellent stability and specific capacitance, making them promising materials for energy storage applications.
Composites of polyaniline and polyvinyl alcohol were prepared through an in-situ polymerisation of aniline using ethanol as a coagulating agent and characterised for their applicability as supercapacitor electrode material. The thermally stable composites afford moderately high electrical conductivity. Composite with 0.03 mol aniline exhibited a high electrical conductivity of 0.371 x 10(-2) S/cm. The variation in electrical conductivity with an increase in aniline content is consistent with the band gap energies estimated from electronic spectra and IR drop. SEM analysis confirms coral-like nanowires of polyaniline (PANI) grown within the polyvinyl alcohol matrix. Cyclic voltametric studies revealed that the composites are highly electroactive as they allow easy diffusion of ions through the nanowires of PANI for efficient electrochemical reaction. The composite with 0.03 mol aniline has a superior specific capacitance of 302 Fg(-1) at a scan rate of 5 mV/s. The composite exhibited a maximum energy density of 41.94 Whkg(-1) and excellent stability even after storage of 18 months in ambient condition with 83.3% capacitance retention.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available