ENHANCING ENERGY STORAGE PERFORMANCE OF BaTiO3/PDMS COMPOSITES WITH CNT FILLERS: Enhancing Energy Storage Performance of BaTiO3/PDMS Composites with CNT Fillers

Apinya Sasipongpan; Nakulkarn Rerngroen; Wanwilai Vittayakorn

doi:10.55766/sujst9705

Authors

Apinya Sasipongpan Department of Nanoscience and Nanotechnology, School of Integrated Innovative Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand.
Nakulkarn Rerngroen Department of Nanoscience and Nanotechnology, School of Integrated Innovative Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand.
Wanwilai Vittayakorn Department of Nanoscience and Nanotechnology, School of Integrated Innovative Technology, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand.

DOI:

https://doi.org/10.55766/sujst9705

Keywords:

Barium Titanate, Dielectric Properties, Energy Storage, Polydimethylsiloxane

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.

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ENHANCING ENERGY STORAGE PERFORMANCE OF BaTiO3/PDMS COMPOSITES WITH CNT FILLERS