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Nanoporous PVDF Hollow Fiber Employed Piezo–Tribo Nanogenerator for Effective Acoustic Harvesting
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-06-07 , DOI: 10.1021/acsami.1c04489 Zhaohan Yu 1 , Ming Chen 1 , Yunming Wang 1 , Jiaqi Zheng 1 , Yongkang Zhang 2 , Huamin Zhou 1 , Dequn Li 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-06-07 , DOI: 10.1021/acsami.1c04489 Zhaohan Yu 1 , Ming Chen 1 , Yunming Wang 1 , Jiaqi Zheng 1 , Yongkang Zhang 2 , Huamin Zhou 1 , Dequn Li 1
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Restricted by the inherent property of low power density, acoustic energy can hardly be effectively captured by conventional piezo- or triboelectric nanogenerators for powering miniature electronics. Herein, a novel piezo–tribo hybrid nanogenerator employing nanoporous polyvinylidene fluoride (PVDF) hollow fiber and polydimethylsiloxane (PDMS) valve, which can mimic the eardrum, has been advocated for efficient acoustic harvesting. The nanoporous, hollow, and valve structure design, together with the effective combination of piezo- and triboelectricity, make the nanoporous PVDF hollow fiber and PDMS valve based acoustic harvester (PHVAH) a promising candidate for acoustic–electric conversion. With an optimal output of 105.5 V and 16.7 μA and a power density of 0.92 W m–2 under the sound stimulation of 117.6 dB and 150 Hz, it can not only recognize audio signals but also convert the sound into electrical energy to light up seven LED bulbs in series. Exhibiting excellent durability and stability, the disruptive innovation proposed here is an effective method for hunting the ubiquitous sound energy in the environment, which provides great potential and impetus for using acoustic–electric conversion to power various low-power-consumption sensors.
中文翻译：
纳米多孔 PVDF 中空纤维采用压电摩擦纳米发电机进行有效的声学收集
受低功率密度固有特性的限制，传统的压电或摩擦纳米发电机很难有效地捕获声能，从而为微型电子设备供电。在此，人们提倡一种采用纳米多孔聚偏二氟乙烯 (PVDF) 中空纤维和聚二甲基硅氧烷 (PDMS) 阀的新型压电-摩擦混合纳米发电机，可以模拟鼓膜，用于有效的声学采集。纳米多孔、中空和阀门结构设计，加上压电和摩擦电的有效结合，使纳米多孔 PVDF 中空纤维和基于 PDMS 阀门的声收集器 (PHVAH) 成为声电转换的有希望的候选者。最佳输出为 105.5 V 和 16.7 μA，功率密度为 0.92 W m –2在117.6分贝和150赫兹的声音刺激下，它不仅能识别音频信号，还能将声音转化为电能，点亮串联的七个LED灯泡。具有出色的耐用性和稳定性，这里提出的颠覆性创新是一种有效的方法来捕捉环境中无处不在的声能，这为利用声电转换为各种低功耗传感器供电提供了巨大的潜力和动力。
更新日期：2021-06-16
中文翻译：
纳米多孔 PVDF 中空纤维采用压电摩擦纳米发电机进行有效的声学收集
受低功率密度固有特性的限制，传统的压电或摩擦纳米发电机很难有效地捕获声能，从而为微型电子设备供电。在此，人们提倡一种采用纳米多孔聚偏二氟乙烯 (PVDF) 中空纤维和聚二甲基硅氧烷 (PDMS) 阀的新型压电-摩擦混合纳米发电机，可以模拟鼓膜，用于有效的声学采集。纳米多孔、中空和阀门结构设计，加上压电和摩擦电的有效结合，使纳米多孔 PVDF 中空纤维和基于 PDMS 阀门的声收集器 (PHVAH) 成为声电转换的有希望的候选者。最佳输出为 105.5 V 和 16.7 μA，功率密度为 0.92 W m –2在117.6分贝和150赫兹的声音刺激下，它不仅能识别音频信号，还能将声音转化为电能，点亮串联的七个LED灯泡。具有出色的耐用性和稳定性，这里提出的颠覆性创新是一种有效的方法来捕捉环境中无处不在的声能，这为利用声电转换为各种低功耗传感器供电提供了巨大的潜力和动力。
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