Loading...
ENHANCING ENERGY STORAGE PERFORMANCE OF BaTiO3/PDMS COMPOSITES WITH CNT FILLERS
Author(s)
Date Issued
January 1, 2025
Type
Article
Abstract
This study explores the dielectric, energy storage, and piezoelectric properties of BaTiO3 (BT)/polydimethylsiloxane (PDMS) composites with varying BT concentrations (10-25 vol%) and an additional 1.5 vol% carbon nanotube (CNT) filler. Microstructural analysis confirmed the uniform distribution of BT nanoparticles, while phase characterization using XRD and FT-IR verified the presence of BT with no evidence of new bond formation. Dielectric measurements revealed a significant increase in the dielectric constant with higher BT content, reaching its peak in the 25 vol% BT/PDMS composite with CNTs. However, energy storage analysis showed that the 20 vol% BT/PDMS composite exhibited the highest energy density, indicating an optimal balance between dielectric constant and loss. The addition of CNTs did not significantly enhance energy storage performance due to their increased electrical conductivity, leakage currents, and agglomeration effects. Furthermore, piezoelectric measurements confirmed the piezoelectric behavior of the composites through an alternating voltage response under mechanical force. The CNT-filled composite exhibited a slightly lower voltage amplitude, likely due to charge dissipation and leakage. These results underscore the potential of BT/PDMS composites for flexible energy storage and piezoelectric applications, while also highlighting the limitations of CNT incorporation.
Citation
Suranaree Journal of Science and Technology, 32(2), 1-7, 2025