Journal of Advanced Dielectrics, Volume. 13, Issue 1, 2242007(2023)

Dielectric temperature stability and energy storage performance of NBT-based lead-free ceramics for Y9P capacitors

Hongtian Li1,2, Shiyu Zhou1,3, Jianwei Zhao1, Tingnan Yan1, Yuxiao Du1, Huanfu Zhou2, Yongping Pu3, and Dawei Wang1,4、*
Author Affiliations
  • 1Shenzhen Institute of Advanced Electronic Materials, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, P. R. China
  • 2Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, P. R. China
  • 3School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi’an 710021, P. R. China
  • 4Functional Materials and Acousto-Optic Instruments Institute, School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin 150080, P. R. China
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    In this work, novel (1x)(0.75Na0.5Bi0.5TiO3)-0.25Sr(Zr0.2Sn0.2Hf0.2Ti0.2Nb0.2)O3-xNaNbO3 (NBT-SZSHTN-xNN,x = 0.1, 0.15, 0.2, 0.25) ceramics were fabricated. The influence of co-doping of NN and high entropy perovskite oxide (SZSHTN) on the phase structure, microstructure and dielectric properties of NBT-based lead-free ceramics was investigated. Dense microstructure with a grain size of5μm is observed. Whenx = 0.25, a wide dielectric temperature stable range of − 35.4–224.3C with a low temperature coefficient of capacitance of< 10% is achieved, fulfilling the industry standard of Y9P specification. Furthermore, excellent energy storage performance with recoverable energy density of 2.4 J/cm3, discharge efficiency of 71%, power density of 25.495 MW/cm3 and discharge rate< 200 ns are simultaneously obtained, which shows great potential for high temperature capacitor applications.In this work, novel (1x)(0.75Na0.5Bi0.5TiO3)-0.25Sr(Zr0.2Sn0.2Hf0.2Ti0.2Nb0.2)O3-xNaNbO3 (NBT-SZSHTN-xNN,x = 0.1, 0.15, 0.2, 0.25) ceramics were fabricated. The influence of co-doping of NN and high entropy perovskite oxide (SZSHTN) on the phase structure, microstructure and dielectric properties of NBT-based lead-free ceramics was investigated. Dense microstructure with a grain size of5μm is observed. Whenx = 0.25, a wide dielectric temperature stable range of − 35.4–224.3C with a low temperature coefficient of capacitance of< 10% is achieved, fulfilling the industry standard of Y9P specification. Furthermore, excellent energy storage performance with recoverable energy density of 2.4 J/cm3, discharge efficiency of 71%, power density of 25.495 MW/cm3 and discharge rate< 200 ns are simultaneously obtained, which shows great potential for high temperature capacitor applications.

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    Hongtian Li, Shiyu Zhou, Jianwei Zhao, Tingnan Yan, Yuxiao Du, Huanfu Zhou, Yongping Pu, Dawei Wang. Dielectric temperature stability and energy storage performance of NBT-based lead-free ceramics for Y9P capacitors[J]. Journal of Advanced Dielectrics, 2023, 13(1): 2242007

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    Paper Information

    Category: Research Articles

    Received: Sep. 23, 2022

    Accepted: Oct. 28, 2022

    Published Online: Mar. 20, 2023

    The Author Email: Wang Dawei (wangdawei102@gmail.com)

    DOI:10.1142/S2010135X22420073

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