1.6 V Nanogenerator for Mechanical Energy Harvesting Using PZT Nanofibers
1.6 V Nanogenerator for Mechanical Energy Harvesting Using PZT Nanofibers
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DOI：
10.1021/nl100812k
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发表时间：
2010-06-01
期刊：
影响因子：
10.8
通讯作者：
Shi, Yong
中科院分区：
文献类型：
--
作者：
Chen, Xi;Xu, Shiyou;Shi, Yong
人们迫切需要能量收集技术，这些技术被设计成微型尺寸，同时还能增加输送给无线电子设备、（1,2）便携式设备、可拉伸电子设备、（3）以及可植入生物传感器（4,5）的功率。基于压电纳米线和纳米纤维的发电机有可能通过将机械能转化为电能来为这类设备供电。然而，在近期报道的压电纳米发电机（7 - 12）中，半导体压电纳米线的压电电压常数低于锆钛酸铅（PZT）纳米材料的压电电压常数。在此我们报道一种基于PZT纳米纤维的压电纳米发电机。PZT纳米纤维的直径和长度分别约为60纳米和500微米，它们排列在铂细线的叉指电极上，并在硅衬底上用一种软聚合物封装。在对软聚合物施加周期性应力时，测得的输出电压和功率分别为1.63伏和0.03微瓦。
Energy harvesting technologies that are engineered to miniature sizes, while still increasing the power delivered to wireless electronics,(1,2) portable devices, stretchable electronics,(3) and implantable biosensors,(4,5) are strongly desired. Piezoelectric nanowire- and nanofiber-based generators have potential uses for powering such devices through a conversion of mechanical energy into electrical energy. However, the piezoelectric voltage constant of the semiconductor piezoelectric nanowires in the recently reported piezoelectric nanogenerators(7-12) is lower than that of lead zirconate titanate (PZT) nanomaterials. Here we report a piezoelectric nanogenerator based on PZT nanofibers. The PZT nanofibers, with a diameter and length of approximately 60 nm and 500 mu m, were aligned on interdigitated electrodes of platinum fine wires and packaged using a soft polymer on a silicon substrate. The measured output voltage and power under periodic stress application to the soft polymer was 1.63 V and 0.03 mu W, respectively.