Fig 1.
FTIR spectra of Gel/MWCNT nanocomposites for various amounts of MWCNT filler content.
Fig 2.
FESEM images of the Gel/MWCNT nanocomposites with (a) 0 wt%, (b) 0.005 wt%, (c) 0.01 wt%, (d) 0.02 wt% and (e) 0.05 wt% of MWCNT concentrations at ×5000 magnification (a-e). Fig (f) shows the FESEM images for the Gel/0.05 wt% MWCNT nanocomposite.
Fig 3.
The change in water contact angle of Gel/MWCNT nanocomposites for different concentration of MWCNTs.
Fig 4.
Variation of the DC resistivity of Gel/MWCNT nanocomposites as a function of MWCNT content.
Fig 5.
Cyclic voltammetry of (a) Gel, (b) Gel/0.005 wt% MWCNT, (c) Gel/0.01 wt% MWCNT, (d) Gel/0.02 wt% MWCNT, (e) Gel/0.05 wt% MWCNT at different voltage scan rates. (f) Comparison of cyclic voltammetry of all the samples at 5 mV/s scan rate.
Fig 6.
Galvanostatic charging-discharging of (a) Gel, (b) Gel/0.005 wt% MWCNT, (c) Gel/0.01 wt% MWCNT, (d) Gel/0.02 wt% MWCNT, (e) Gel/0.05 wt% MWCNT at different current densities. (f) Comparison of GCD curves of all the samples at a current density of 0.3 μA/cm2.
Fig 7.
Calculated specific capacitance from galvanostatic charging-discharging of Gel/MWCNT samples at different current densities.
Fig 8.
The complex impedance spectra of the nanocomposites with the fitting curves.
The inset image shows the higher frequency region, and the equivalent circuit for the best-fitted curves.
Table 1.
The different circuit components of the equivalent circuit used in simulation of the Gel/MWCNT nanocomposites.
Fig 9.
The capacitive retention for 5000 cycles of GCD for the Gel/0.05% MWCNT nanocomposite.
The inset shows the GCD curves for the 1st and the 5000th cycles.
Fig 10.
Biodegradability analysis of Gel/MWCNT nanocomposites in water as a function of time.