Structural and energy storage properties of LiTa0.97Nb0.03O3 modulated (Ba0.5Na0.5)0.7Ba0.3TiO3-based ceramics

IF 2.8 4区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Materials Science: Materials in Electronics Pub Date : 2024-09-09 DOI:10.1007/s10854-024-13456-w

Chen Chen, Qiyi Yin, Fei Lin, Zhongrui Du, Fan Si, Yulin Zhang, Mengjun Zhang, Xiangyu Zhu, Hui Zhang, Hao Zu, Kunhong Hu, Fulin Zhang, Zhifeng Li, Hongqian Guo

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Abstract

Lead-free dielectric energy storage ceramics have attracted much attention in the fields of medicine, electronic components and military because of their ultra-high efficiency and high energy storage density. In this study, (1-x)(Bi_0.5Na_0.5)_0.7Ba_0.3TiO₃-xLiTa_0.97Nb_0.03O₃ (BNBT-xLTN) lead-free relaxation energy storage ceramics have been prepared by solid-phase high-temperature sintering.XRD analysis confirms that all the components of BNBT-xLTN ceramics are in a single-phase chalcocite structure, and no heterogeneous phases are detected. With the increase of LTN doping, the relaxation and energy storage properties of the ceramics were significantly improved, while the microscopic morphology showed a dense state with uniform particle size and no pores, which improved the breakdown strength (E_b) of the ceramics. Analysis of the experimental results 0p showed that the LTN-doped ceramics displayed finer electric hysteresis return lines (P-E) as compared to the undoped BNBT (x = 0).The electrical performance of the ceramics is significantly enhanced at 30 kV/mm field strength when LTN doping x = 0.10. Its recoverable energy storage density is as high as W_rec = 4.95 J/cm³ and η = 93.2% with ultra-high energy storage efficiency. The ceramic also has an ultra-short discharge time of t_0.9 = 0.38 μs. This study demonstrates the great potential of this ceramic system for practical applications.

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LiTa0.97Nb0.03O3 调制 (Ba0.5Na0.5)0.7Ba0.3TiO3 基陶瓷的结构和储能特性

无铅介质储能陶瓷因其超高效率和高储能密度而在医药、电子元件和军事领域备受关注。本研究采用固相高温烧结法制备了 (1-x)(Bi0.5Na0.5)0.7Ba0.3TiO3-xLiTa0.97Nb0.03O3（BNBT-xLTN）无铅弛豫储能陶瓷。随着 LTN 掺杂量的增加，陶瓷的弛豫和储能性能得到显著改善，而微观形貌则呈现出粒径均匀、无孔隙的致密状态，从而提高了陶瓷的击穿强度（Eb）。实验结果分析表明，与未掺杂的 BNBT（x = 0）相比，掺杂 LTN 的陶瓷显示出更细的电滞回线（P-E）。它的可恢复储能密度高达 Wrec = 4.95 J/cm3，η = 93.2%，具有超高的储能效率。这种陶瓷还具有 t0.9 = 0.38 μs 的超短放电时间。这项研究证明了这种陶瓷系统在实际应用中的巨大潜力。

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来源期刊

Journal of Materials Science: Materials in Electronics 工程技术-材料科学：综合

CiteScore

5.00

自引率

7.10%

发文量

1931

审稿时长

2 months

期刊介绍： The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.