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).