20.500.12556/DiRROS-25376 Enhancing the performance of ▫$BaTi_{0.89}S_{0.11}O_3$▫/ PVDF‑HFP composites through tailored functionalization of barium stannate titanate ▫$(BaTi_{0.89}S_{0.11}O_3)$▫ fillers Nanocomposites are currently attracting significant attention in the energy sector, particularly for storage applications. However, controlling interfacial compatibility remains a challenge. This work introduces a novel interfacial functionalization strategy that enables the achievement of exceptional dielectric properties and addresses the persistent issue of poor filler–matrix interaction in nanocomposites. A poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) matrix was filled with lead-free BaTi0.89Sn0.11O3 (BTS11) nanoparticles, which exhibit ultra-high piezoelectric performance near ambient temperature. These nanoparticles were functionalized with various modifying agents, including ethylenediamine (EDA), polyvinylpyrrolidone (PVP), polydopamine (PDA), and 3-aminopropyltriethoxysilane (APS). The study demonstrated that the functionalized HO-BTS11@modifier/PVDF-HFP nanocomposites exhibit distinct dielectric characteristics depending on the modifying agent. The HO-BTS11@EDA/PVDF-HFP nanocomposites, which included hydroxylated HO-BTS11 nanoparticles modified with EDA, outperformed other modified systems with the maximum energy storage efficiency (~ 77%) and a dielectric permittivity of 70 at 1 kHz. EDA with small molecular size, low polarity, and ability to form hydrogen bonds enable improved interfacial adhesion with the hydrophobic PVDF-HFP matrix making the composite suitable for enhancing energy storage performance. This selective functionalization strategy not only provides new insights into interface engineering but also offers a promising pathway for the development of high-performance materials for energy storage and harvesting devices, embedded capacitors, flexible electronics, and next-generation dielectric systems. nanocomposites interfacial functionalization piezoelectric properties dielectric properties nanokompoziti piezoelektrične lastnosti dielektrične lastnosti true false true Springer Nature ZDA Angleški jezik Slovenski jezik Neznano 2026-01-19 11:22:58 2026-01-19 11:22:59 2026-01-20 04:06:15 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Soavtorji iz Slovenije: Hana Uršič, Ivana Goričan, Brigita Kmet, Zdravko Kutnjak; Opis vira z dne 1. 9. 2025; str. 1-18 Vol. 36, article no. 1509 25 Aug. 2025 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 2025-05-23 2025-08-17 2025-08-25 2026-08-25 621.7+621.9 1573-482X 10.1007/s10854-025-15623-z 247203075 https://link.springer.com/article/10.1007/s10854-025-15623-z 1 d79fe25c-f520-11f0-a15d-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=38411 RAZ_Zahid_Marwa_2025.pdf RAZ_Zahid_Marwa_2025.pdf 1 0653CE6D2A616CD933A775B1E8749E7F 640093d09e632e7c1d9c90c80b9340007eb9a20db48a7036d7d6a0d6a57d138f 23b293a4-f522-11f0-a15d-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=38412 Institut Jožef Stefan 0 0 0