A novel manufacturing method and structural design of functionally graded piezoelectric composites for energy-harvesting
A novel manufacturing method and structural design of functionally graded piezoelectric composites for energy-harvesting
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DOI：
10.1016/j.matdes.2021.110371
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发表时间：
2022-01-04
影响因子：
8.4
通讯作者：
Narita, Fumio
中科院分区：
文献类型：
--
作者：
Wang, Zhenjin;Maruyama, Kohei;Narita, Fumio
随着物联网（IoT）的发展，传感器的电源变得越来越重要。因此，我们的目标是将日常生活中的周围环境能源转化为电能，然后为物联网传感器供电。在这项工作中，我们开发和制造的功能梯度压电复合材料使用聚（偏氟乙烯-共-三氟乙烯）[P（VDF-TrFE）]和钛酸钡（BaTiO 3，BTO）颗粒。功能梯度材料比均质复合材料具有更好的比强度、韧性和抗疲劳性，使其适合于能量收集。采用旋涂法和热压法制备了BTO/P（VDF-TrFE）复合材料。在确定最佳旋涂和热压条件后，使用电晕极化技术对复合材料进行极化。用扫描电镜、差示扫描量热仪和X射线衍射仪对复合材料的结构和性能进行了表征。然后，压电特性进行了测试，冲击和振动能量产生的测试设计和执行。本研究为功能梯度压电复合材料的制备提供了一种可行的方法，并探讨了材料的能量收集潜力。同时，为构造用于各种能量收集应用的功能梯度压电复合材料结构提供了指导。(c)2022作者由爱思唯尔有限公司出版。这是一篇在CC BY-NC-ND许可证下的开放获取文章（http：//creativecommons.org/licenses/by-nc-nd/4.0/）。
The power supply to the sensors becomes increasingly critical as the Internet of Things (IoT) evolves. Hence, our goal is to transform ambient environmental energy in our daily lives into electrical energy and then give power to IoT sensors. In this work, we developed and manufactured functionally-graded piezocomposite using poly(vinylidene fluoride-co-trifluoroethylene) [P(VDF-TrFE)] and barium titanate (BaTiO3, BTO) particles. Functionally graded materials offer better specific strength, toughness, and fatigue resistance than homogeneous composite materials, making them appropriate for energy-harvesting. Spin coating and hot-pressing methods were used to create BTO/P(VDF-TrFE) composites with varying BTO particle fractions and structures. After determining the optimal spin coating and hot-pressing conditions, the composites were polarized using the corona poling technique. The structure and properties of the composites were determined by scanning electron microscopy, differential scanning calorimetry, and X-ray diffraction. Then the piezoelectric characteristics were tested, and impact and vibration energy production tests were devised and carried out. This research provides a feasible manufacturing method for functionally graded piezocomposites and investigates the material energy-harvesting potential. Meanwhile, guidance is offered for the construction of functionally graded piezoelectric composites structures for use in various types of energy-harvesting applications. (c) 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).