Ferroelectric dipole electrets for output power enhancement in electrostatic vibration energy harvesters
Ferroelectric dipole electrets for output power enhancement in electrostatic vibration energy harvesters
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DOI：
10.1063/1.4824831
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发表时间：
2013-10-14
影响因子：
4
通讯作者：
Kuwano, Hiroki
中科院分区：
文献类型：
--
作者：
Asanuma, Haruhiko;Oguchi, Hiroyuki;Kuwano, Hiroki
提出了一种由极化锆钛酸铅组成的铁电偶极子驻极体。对平行板电容器背后的物理的深入了解从理论上预测，我们可以通过增加其表面电荷密度和厚度来提取铁电偶极子驻极体表面附近的大电场。铁电偶极子驻极体的实验结果与理论分析符合得很好。使用铁电偶极子驻极体的静电振动能量采集器的最大输出功率密度为78 μ W/cm（3），比传统的聚合物驻极体增加了三倍。我们的研究结果将为铁电体作为驻极体的应用铺平道路。(C)2013 AIP Publishing LLC.
We propose a ferroelectric dipole electret composed of polarized lead zirconate titanate. Deep insight into the physics behind the parallel plate capacitor theoretically predicts that we can extract large electric field near the surface of the ferroelectric dipole electret by increasing its surface charge density and thickness. Experiment for ferroelectric dipole electret shows good agreement with the theory. The maximum output power density of electrostatic vibration energy harvesters using the ferroelectric dipole electret was 78 mu W/cm(3), a three-fold increase over a conventional polymer electret. Our results will pave the way for use of ferroelectrics as electrets. (C) 2013 AIP Publishing LLC.