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Improvements of microstructures and energy storage properties of Sr0.8(Na0.5Bi0.5)0.2TiO3 ceramics via microwave sintering

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Abstract

The Sr0.8(Na0.5Bi0.5)0.2TiO3 (SNBT) ceramics were prepared by different methods as conventional sintering (CS) and microwave sintering (MS), which showed different performance. The impact of MS method on the microstructure and energy storage properties of SNBT ceramics were investigated in this study. The MS SNBT ceramics showed smaller average grain size (G), homogeneous grain size distribution and denser microstructure. Compared with CS SNBT ceramics (1.7 μm), the G of MS SNBT ceramics was smaller (0.55 μm). The MS SNBT ceramics showed much improved energy storage properties over the CS SNBT ceramics. The higher breakdown strength (Eb) and energy density (Jd) of MS SNBT ceramic were 26.12 kV/mm and 2.28 J/cm3, respectively, which were higher than that (21.01 kV/mm of Eb, 1.48 J/cm3 of Jd) of CS SNBT ceramic, while energy storage efficiency (ƞ) of MS SNBT ceramic was 74.77%, which was higher than that (73.21%) of CS SNBT ceramic.

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Acknowledgements

This work was financed by the National Natural Science Foundation of China (51872175), the International Cooperation Projects of Shaanxi Province (2018KW-027).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi’an, 710021, P. R. China

    Bo Wang, Yongping Pu, Qibin Yuan, Chenwei Cui & Guodong Shen

  2. Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi’an, 710021, P. R. China

    Bo Wang, Yongping Pu, Qibin Yuan, Chenwei Cui & Guodong Shen

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  1. Bo Wang
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  2. Yongping Pu
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  3. Qibin Yuan
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Correspondence to Yongping Pu.

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Wang, B., Pu, Y., Yuan, Q. et al. Improvements of microstructures and energy storage properties of Sr0.8(Na0.5Bi0.5)0.2TiO3 ceramics via microwave sintering. J Mater Sci: Mater Electron 30, 12950–12955 (2019). https://doi.org/10.1007/s10854-019-01657-7

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  • DOI: https://doi.org/10.1007/s10854-019-01657-7

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