Mesoporous surface control of PVDF thin films for enhanced piezoelectric energy generation
Mesoporous surface control of PVDF thin films for enhanced piezoelectric energy generation
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DOI：
10.1016/j.sna.2014.05.027
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发表时间：
2014-09-01
影响因子：
4.6
通讯作者：
Zhang, John X. J.
中科院分区：
文献类型：
--
作者：
Chen, Dajing;Sharma, Tushar;Zhang, John X. J.
我们表明，纳米结构薄膜在紧凑的能量收集聚偏氟乙烯（PVDF）纳米发电机中发挥着重要作用。在这项工作中，我们介绍了一种表面控制技术，制备介孔PVDF薄膜向高压电输出。我们证明了薄膜的形态可以通过改变溶剂蒸发速率来控制。通过X射线衍射（XRD）和差示扫描量热仪（DSC）测试证实了材料的结晶性。多层PVDF结构的多孔表面显着增加了压缩性和电荷收集面积，这有助于显着提高输出。压电输出增加了100%与改性介孔层。与相同厚度的固体PVDF膜相比，充电容量提高了107%。(C)2014爱思唯尔有限公司版权所有。
We demonstrate that nanostructured thin films play a significant role in compact energy harvesting polyvinylidene fluoride (PVDF) nanogenerators. In this work, we introduced a surface control technique for preparing mesoporous PVDF thin films toward high piezoelectric output. We demonstrated that the morphology of the film could be controlled by varying the solvent evaporation rate. The material crystallinity was experimentally confirmed by X-ray diffraction (XRD) and differential scanning calorimeter (DSC) measurement. The multilayer PVDF structure with porous surface significantly increased the compressibility and charge collecting area which contributes to the significant output enhancement. The piezoelectric output increased 100% with the modified mesoporous layer. The charging capacity increased 107% compared with the same thickness solid PVDF film. (C) 2014 Elsevier B.V. All rights reserved.