Enhancing the Structural, Optical, and Electrical Properties of Polymer Nanocomposites Doped With α‐ MoO 3 Nanoplates for Advanced Energy Storage Applications

• Published in: Polymer engineering and science
• Main Author: AlZaidy, Ghadah Abdulrahman
• Format: Journal Article
• Language: English
• Published: 21.07.2025
• ISSN: 0032-3888; 1548-2634
• DOI: 10.1002/pen.70051

Polymer based‐nanocomposites (PNCs) have attracted considerable industrial and research attention due to their outstanding applications in various areas, and it is expected to be one of the most useful functions for nanotechnology trends. This study reports the synthesis method for nanocomposites composed of PEO/HPMC/CMC polymer blends doped with α‐MoO 3 nanoplates using a solution‐casting method. The structural, optical, and electrical properties of the nanocomposites composed were characterized by XRD and FTIR analyses that confirmed successful integration of α‐MoO 3 into the polymer matrix, enhancing the amorphous content and facilitating charge mobility. Optical studies revealed a red shift in the absorption edge and a consistent decrease in both direct and indirect band gaps from 4.87 to 2.11 eV and from 3.22 to 1.99 eV, respectively, as the α‐MoO 3 content increased. Electrical measurements showed a significant increase in DC conductivity, reaching 1.02 × 10 −9 S/cm at 1.5 wt.% α‐MoO 3 , compared to 3.53 × 10 −11 S/cm for the pure polymer blend. Dielectric studies show significant improvements in real ( ε ′) and imaginary ( ε ′′) components, supporting better energy storage and retention properties. Impedance and modulus analyses further confirmed improved ionic mobility and reduced relaxation times. These findings reveal the significance of using PEO/HPMC/CMC‐α‐MoO 3 nanocomposites for advanced energy storage and electronic applications, such as dielectric capacitors and transistors.