Figure 4: LSV of maximum conducting nanofiller doped polymer
electrolyte film
Optical Microscopy Analysis
Optical micrographs of optimized polymer-salt complex (PEO: NaI), rise
nanofiller doped polymer electrolytes, and pure polymer (PEO)
electrolytes are displayed in Figure 5. Figure 5(a) depicts the optical
micrograph of the pure polymer PEO. It has been found that pure PEO has
greater white patches (spherulite’s) than polymer salt complex films and
nanofiller-doped polymer electrolyte films. This illustrates the
material’s immense degree of crystallinity, which is suggestive of the
host polymer PEO’s semi-crystalline structure. Also, the PEO polymer
exhibits surface morphological roughness. The surface morphology has
changed as a result of the 12 wt % NaI addition to the PEO polymer
matrix. Due to the salt doping, spherulites crystalline size has
randomly decreased. The dark area seen in Figure 5(b) denotes an
increase in the matrix’s amorphous nature for the polymer salt complex.
The surface morphology of the PEO + 12 wt% NaI polymer matrixes
significantly change when 0.04 wt% MXene is added, as can be seen in
Fig. 5(c).