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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Tailoring frequency-insensitive large field-induced strain and energy storage properties in (Ba0.85Ca0.15)(Zr0.1Ti0.9)O-3-modified (Bi0.5Na0.5)TiO3 lead-free ceramics
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Tailoring frequency-insensitive large field-induced strain and energy storage properties in (Ba0.85Ca0.15)(Zr0.1Ti0.9)O-3-modified (Bi0.5Na0.5)TiO3 lead-free ceramics

机译：（BA0.85CA0.15）（ZR0.1TI0.9）O-3改性（Bi0.5NA0.5）TiO3无铅陶瓷（BA0.1TI0.9）剪裁频率不敏感的大型场诱导的应变和能量储存性能

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摘要

Lead-free (Bi0.5Na0.5)TiO3-based relaxor ferroelectrics are attracting growing research interest due to their very large field-induced strain response and excellent energy storage performance. While extensive explorations have been made of these performances separately, being able to optimize both field-induced strain and energy storage performance of polycrystalline materials together, and hence achieve a synergistic result, would also be highly desirable for their practical applications. Herein, lead-free relaxor-ferroelectric (Ba0.85Ca0.15)(Zr0.1Ti0.9)O-3-modified (Bi0.5Na0.5)TiO3 (BNT-BCZT) ceramics were designed and demonstrated to be feasible candidates for both actuator and pulsed power capacitors. Optimal field-induced strain performances were realized in 0.92BNT-0.08BCZT ceramics with not only a high strain of 0.46% but also an impressive frequency stability (0.5 Hz-100 Hz), superior to those of other reported BNT-based materials under a similar frequency range. Moreover, the 0.5BNT-0.5BCZT compositions in the complete ER region delivered a relatively high W-rec of 0.95 J cm(-3) and eta of 69%, while still remaining insensitive to changes in temperature, frequency, and cycle number. More importantly, a short discharge time (of similar to 0.41 mu s) was also measured for this composition. Introducing BCZT into the composition was found to promote a non-ergodic-to-ergodic relaxor (NR-ER) phase transition and the formation of dynamic polar nanoregions (PNRs), generating the high strain responses and superior energy storage performances of the given compositions. These features may offer a new strategy to simultaneously tailor lead-free relaxor ferroelectrics toward high field-induced strain and superior energy storage performance for ceramics actuators and capacitor applications.
机译：无铅（BI0.5NA0.5）TiO3的松弛剂铁电器由于其非常大的现场诱导的应变响应和优质的能量存储性能而引起了日益增长的研究兴趣。虽然广泛的探索是分开的，但能够优化多晶体材料的场诱导的菌株和能量存储性能，因此实现协同结果，也是它们的实际应用的能量。在此，设计并证明了无铅松弛剂 - 铁电（Ba0.85Ca0.15）（Zr0.1Ti0.9）O-3改性（Bi0.5Na0.5）TiO3（BNT-BCZT）陶瓷是可行的候选者致动器和脉冲电力电容器。在0.92bnt-0.08bczt陶瓷中实现了最佳场诱导的应变性能，不仅具有0.46％的高应变，还具有令人印象深刻的频率稳定性（0.5Hz-100Hz），优于其他报告的基于BNT的基础材料类似的频率范围。此外，完整ER区域中的0.5bnt-0.5bczt组合物在0.95J厘米（-3）和ETA的相对高的W-REC中递送69％，同时仍然仍然对温度，频率和循环数的变化不敏感。更重要的是，还测量该组合物的短放电时间（类似于0.41μs）。将BCZT引入组合物中，促进非遍历〜ergodic弛豫（NR-ER）相转变和动态极性纳米导板（PNR）的形成，产生高应变响应和给定组合物的卓越能量储存性能。这些特征可以提供一种新的策略，可以同时定制无铅松弛剂铁路朝向高场诱导的应变和卓越的储能性能，以及用于陶瓷执行器和电容器应用。

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  • 作者

    Bai Wangfeng; Wang Leijie; Zhao Xinyu; Zheng Peng; Wen Fei; Li Lili; Zhai Jiwei; Ji Zhenguo;

  • 作者单位

    Hangzhou Dianzi Univ Coll Mat &

    Environm Engn Hangzhou 310018 Zhejiang Peoples R China;

    Hangzhou Dianzi Univ Coll Mat &

    Environm Engn Hangzhou 310018 Zhejiang Peoples R China;

    Hangzhou Dianzi Univ Coll Mat &

    Environm Engn Hangzhou 310018 Zhejiang Peoples R China;

    Hangzhou Dianzi Univ Coll Mat &

    Environm Engn Hangzhou 310018 Zhejiang Peoples R China;

    Hangzhou Dianzi Univ Coll Mat &

    Environm Engn Hangzhou 310018 Zhejiang Peoples R China;

    Hangzhou Dianzi Univ Coll Mat &

    Environm Engn Hangzhou 310018 Zhejiang Peoples R China;

    Tongji Univ Sch Mat Sci &

    Engn Funct Mat Res Lab 4800 Caoan Highway Shanghai 201804 Peoples R China;

    Hangzhou Dianzi Univ Coll Mat &

    Environm Engn Hangzhou 310018 Zhejiang Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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