The increasing demand for energy in the past two decades intensified the development of efficient and sustainable energy storage systems. In this context, the use of polymer-based composites is a promising approach as dielectric materials for next generation capacitors as a quick and burst energy source. A blend of polyvinyl alcohol (PVA) and chitosan (CS) was used as the matrix, while CuO particles acted as fillers. This work reports, for the first time, the synergistic interaction between PVA and chitosan matrices with CuO nanoparticles for dielectric investigations for advanced energy storage applications. The successful formation of the composite was confirmed by UV–visible and FTIR analyses. SEM images revealed a textured surface due to CuO incorporation, while TGA demonstrated improved thermal stability, highlighting the reinforcing effect of CuO in the composite. The dielectric constant as a function of frequency has also been measured for a series of composites, with a maximum increase of 270 % in dielectric constant at 300Hz against a loading of 7 wt% CuO. The results of this study demonstrate that ternary composites are promising dielectric materials for use in efficient and flexible capacitors, offering a sustainable solution for the development of efficient energy storage systems.
Rahmat Ullah, Tajamal Hussain, Adnan Mujahid, Ahsan Sharif and Ejaz Ahmed
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