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  • Superior energy storage in Sn-doped BaTiO[sub]3 thin-film capacitors with a slush-like polar state
    Hanani, Zouhair ...
    Relaxor ferroelectrics are highly valued in energy storage for their high recoverable energy density and effi ciency. To address environmental concerns over lead-based materials, this study explores ... Sn-doped BaTiO3 (BaTi0.89Sn0.11O3, BTSn) thin films as a lead-free alternative. BTSn films, grown via pulsed laser deposition on a SrTiO3 substrate with a LaNiO3 electrode, achieve 105 J cm3 energy density and 80 % efficiency at 8.5 MV cm1, with a figure-of-merit of 1125 J cm3 at 6 MV cm1. They also demonstrate excellent thermal stability (0–140 ◦C) and durability through 1010 charge–discharge cycles. The high breakdown strength was attributed to the absence of Ti3+and the presence of nanodomains (1–3 nm) with slush-like polar structures. A correlation between the local Sn content and B-site displacement indicates that polar nanodomains, measuring 2–4 unit cells in size, exhibit large displacements and are Sn-deficient. These findings suggest that BTSn thin films offer a promising, reliable, and eco-friendly alternative for next-generation energy storage systems, contributing to global sustainability efforts by reducing reliance on hazardous lead-based materials
    Vir: Chemical engineering journal. - ISSN 1385-8947 (Vol. 510, Art. 161567, 2025, str. 1-10)
    Vrsta gradiva - članek, sestavni del
    Leto - 2025
    Jezik - angleški
    COBISS.SI-ID - 230326275
    DOI

vir: Chemical engineering journal. - ISSN 1385-8947 (Vol. 510, Art. 161567, 2025, str. 1-10)
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