Studies of surface morphology and electrode conductivity of polyindole nanocomposite with temperature variation
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Date
2019-06
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
A series of polyindole (PIn)/tungsten carbide (WC) with graphite (Gr) polymer nanocomposites (PNCs) electrodes were fabricated at different concentrations of WC (%, w/w) ranging from 5.0 to 15.0 over an iron plate. PNCs were characterized through various spectral, thermal and electrical methods. FT-IR spectra confirmed the formation of PNCs and SEM reveal the microstructure of surface of PNCs. Thermal haracterization revealed that thermal stability of PNCs increases with addition of WC. All PNCs show linear I/V characterization and their electrical conductivity increases with WC concentration and applied voltage. The control (PIn+Gr) shows lowest conductivity, whereas [III] indicate the highest conductivity in comparison to other PNCs. It was found that the conductivity of EM [III] increased with concentration of WC and maximum value obtained was 0.71 × 10-2 Scm-1 at 100 V. The effect of the baking temperature range 50-100°C and baking time range 6-12 hours on the conductivity of EM [III] was same. Conductivity also increases with baking time and baking temperature up to 6 hours and 50°C, then a gradual decreases in these parameters started. Present investigation reveals that the designed electrode can be utilize in electrochemical energy storage devices under optimize baking conditions.
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