Processing and Energy-harvesting Ability of (Na,K)NbO3 Particle-dispersed Fibrous Polyvinylidene Fluoride Multilayer Composite
Processing and Energy-harvesting Ability of (Na,K)NbO3 Particle-dispersed Fibrous Polyvinylidene Fluoride Multilayer Composite
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(Na,K)NbO3 颗粒分散纤维状聚偏氟乙烯多层复合材料的加工和能量收集能力
DOI：
10.1016/j.matlet.2015.05.019
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
M. Kato and K. Kakimoto
中科院分区：
文献类型：
--
作者：
N. Matsubara;T. Fuchigami;K. Kakimoto;M. Kato and K. Kakimoto
压电振动能量采集器有望用作泛在网络中传感器的电源，并且采集器的材料和结构的改进正在进行中。我们生产了一种新型的振动能量采集器，其具有通过将无铅压电（Na0.5K0.5）NbO 3（NKN）陶瓷颗粒与通过静电纺丝形成的聚偏氟乙烯（PVDF）织物混合而获得的独特材料。PVDF/NKN织物显示出高柔性，并且在纵向方向上是可拉伸的。设计了一种PVDF/NKN织物与聚乙烯醇（PVA）片材交替多层结构的收割机，并通过热压成型。收割机的电功率输出结果表明，织物在纵向方向上的高柔性被有效地利用，并且通过将NKN粉末掺入PVDF织物中来提高电功率输出。该采集器在170 Hz下显示出每个振动周期145 nW/cm 2的最大功率输出。
Piezoelectric vibration energy harvesters are expected to be used as power sources for sensors in ubiquitous networks, and improvements in the materials and structures of harvesters are ongoing. We produced a novel vibration energy harvester with a unique material obtained by mixing lead-free piezoelectric (Na0.5K0.5)NbO3(NKN) ceramic particles with a polyvinylidene fluoride (PVDF) fabric formed by electrospinning. The PVDF/NKN fabric showed high flexibility and was stretchable in the longitudinal-direction. Furthermore, a harvester with a multilayer structure of alternating PVDF/NKN fabrics and polyvinyl alcohol (PVA) sheets was designed and then fabricated by hot pressing. Electric power output results for the harvester suggest that the high flexibility of the fabric in the longitudinal-direction was effectively utilized and the electric power output was enhanced by incorporating NKN powder into PVDF fabric. This harvester showed a maximum power output of 145 nW/cm2per vibration cycle at 170 Hz.