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缺陷工程与合理的补充剂调制,用于在无压陶中高温收集能量

Kaibiao Xi¹, Jianzhe Guo¹, Mupeng Zheng¹

¹Key Laboratory of Advanced Functional Materials, Ministry of Education, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.

Nano-micro letters

|November 4, 2024

概括

这项研究开发了用于高温压电能收获器 (HT-PEHs) 的先进无压陶器. 这种新材料可以为在250°C工作的无线传感器提供可靠的电源.

科学领域:

材料科学材料科学材料科学
收集能源收集能源
陶工程陶工程陶工程

背景情况:

高温压电能量收获器 (HT-PEH) 对于在苛刻的环境中为无线传感器供电至关重要,为电池提供可持续的替代品.
现有的无压陶努力实现必要的高功率 (FOM),绝缘电阻率 (ρ) 和脱极化温度 (T_d) 以在250°C等温度下可靠运行.

研究的目的:

设计无BiFeO₃-BaTiO₃ (BF-BT) 压陶,同时具有出色的高温性能特性.
为了证明这些材料在实际的高温压电能收获应用中的可行性.

主要方法:

在BF-BT陶中使用受控兴奋剂的创新缺陷工程.
优化极化配置,并通过缺陷二极管稳定域定向.
电气性质的表征,包括T_d, ρ和FOM在高温下.

主要成果:

在-化BF-BT陶中实现了均衡的性能,T_d = 340°C, ρ_250°C > 10⁷ Ω cm,FOM_250°C = 4905 × 10^{-15 m² N^-1.}
用开发的压陶组装的HT-PEHs的高能量转换效率 (η = 11.43%) 已被证明,可使电容在250°C时快速充电.

结论:

通过兴奋剂对BF-BT进行缺陷工程是一种有效的策略,以满足对高端HT-PEHs的严格要求.
开发的压陶为自动供电的无线传感器铺平了道路,在高温环境中可靠运行.

关键词:

缺陷工程是什么?缺陷工程是什么?补充剂调节剂的调节.在高温的高温.没有的压陶.压电式能源收获机压电式能源收获机

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