POS6-1455

Interfacial Engineering of Ba1-xSrxTiO3/PDMS Nanohybrids for Efficient, Thermally Stable, and Skin-Adherent Triboelectric Nanogenerators

When and Where

Nov 30, -0001 00:00 - 00:00

Room 301 (Grand Ballroom)

Presenter(s)

Mirza Mahmood Baig (University of Ulsan,South Korea)

Co-Author(s)

No co-authors

Abstract

The increasing demand for sustainable energy technologies necessitates the development of flexible, lightweight, and durable self-powered systems for wearable and Internet of Things (IoT) devices. Triboelectric nanogenerator (TENG) can harvest ambient mechanical energy, but its performance is limited by the low dielectric constant of polymer matrices and the instability of conventional fillers. Herein, Ba_{_1-_x}Sr_{_x}TiO_₃ (BSTO) ceramics (x = 0.00–0.12) were synthesized via a composite hydroxide-mediated route combined with two-step sintering to tailor dielectric and ferroelectric properties. The optimized composition (x = 0.09) exhibited a recoverable energy density of 2.786 J cm⁻³, 91.7% efficiency, and a breakdown strength of 160 kV cm⁻¹. The optimized BSTO filler was incorporated into a PDMS matrix using Tween-80 as a surfactant–plasticizer to enhance filler dispersion, interfacial compatibility, and mechanical flexibility. At 3 wt.% filler loading, the composite-based TENG delivered an output voltage of 400 V and a short-circuit current of 10 µA, while maintaining stable performance under repeated mechanical loading and temperatures up to 300 °C. The device successfully powered LEDs, charged capacitors, and enabled skin-conformal motion sensing, demonstrating the potential of surfactant-assisted ceramic–polymer nanohybrids for flexible, thermally stable wearable energy harvesting.

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