Abstract
SnO2-doped (Bi0.5Na0.5)0.93Ba0.07TiO3 (BNT7BT) ceramics were prepared via a conventional solid-state reaction method. Their phase structures, microstructures, and electrical properties were characterized in detail. SnO2 doping increased the lattice parameters and the average grain sizes. A certain amount of SnO2 could improve the dielectric properties, and tune the relaxor behavior of the BNT7BT; in this manner, low energy loss and high energy storage density were achieved. In particular, the BNT7BT sample with 0.2 mol% SnO2 exhibited a high recoverable energy density of 1.27 J cm−3 and energy efficiency of 79.15%, which was mainly attributed to a large electric-field of 150 kV cm−1 and a small remnant polarization of 1.15 μC cm−2. The results indicate that (Bi0.5Na0.5)0.93Ba0.07SnxTi1−xO3 ceramics can be a promising lead-free candidate for energy storage capacitors.
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Acknowledgements
This work was supported by the Major Program for Science and Technology of Inner Mongolia Autonomous Region (Grant No. 2019ZD12), the Program for “Grassland Talents” Innovation Team of Inner Mongolia (Rare Earth Modified Lead-free Ferroelectric Multilayer Ceramic Capacitors Innovative Talent Team) and the Scientific and Technological Development Foundation OF the Central Guidance Local (2021ZY0008). We thank Alan Burns, PhD, from the Liwen Bianji (Edanz) (www.liwenbianji.cn) for editing the English text of a draft of this manuscript.
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XL: sample preparation, data analysis, writing. XH: project administration, data analysis. SA: writing, reviewing and editing. YL: XRD analysis, dielectric properties analysis. QZ: XPS analysis, data collection. All authors have read and agreed to the published version of the manuscript.
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Li, X., Hao, X., An, S. et al. Enhanced energy storage in Sn-doped sodium bismuth titanate lead-free relaxor ferroelectric ceramics. J Mater Sci: Mater Electron 33, 5265–5272 (2022). https://doi.org/10.1007/s10854-022-07714-y
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DOI: https://doi.org/10.1007/s10854-022-07714-y