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Integrating hydrovoltaic device with triboelectric nanogenerator to achieve simultaneous energy harvesting from water droplet and vapor
Nano Energy ( IF 17.6 ) Pub Date : 2022-06-11 , DOI: 10.1016/j.nanoen.2022.107495
Xin Chen, Conghui Jiang, Yuhang Song, Beibei Shao, Yanfei Wu, Zheheng Song, Tao Song, Yusheng Wang, Baoquan Sun

Extensive efforts have been made to collect energy from water to generate electricity. However, producing a high density of electrical power for small mobile electronics is challenging. Triboelectric nanogenerator (TENG), which can convert droplet water into electricity, provides sustainable electrical power for small electronics. In addition, hydrovoltaic device (HD) can harvest energy from water evaporation into electricity for small electronics. Herein, an integrated device aimed at collecting energy from both impinging water droplets and evaporation is proposed by combining a TENG with an HD. An architecture that comprises a fluorinated ethylene propylene (FEP) film as a triboelectric layer with an aluminum electrode is used to collect energy from impinging water droplets. A silicon-based HD with an asymmetrical structure where nanostructured silicon plus hierarchical nanofabric carbon electrode is used to harvest energy from vaporizing water droplets. Silver is used as a mutual electrode to integrate the TENG and the HD to generate electricity by fully using falling water droplet energy. The microstructure is built on the FEP film surface to enlarge the contact area between the droplets and FEP, greatly boosting the output of the TENG with an open-circuit voltage of 200 V and a short circuit current of 60 μA in pulsed mode, respectively. Meanwhile, the HD device yields a consistent open-circuit voltage of 550 mV and a short circuit current density of 30 μA/cm2. This integrated device provides a smart strategy to generate electricity by fully collecting energy from impinging water droplets and evaporation, paving an alternative way to efficiently harvest water energy.



中文翻译:

将水电装置与摩擦纳米发电机相结合,实现水滴和蒸汽的同时能量收集

已经做出了广泛的努力来从水中收集能量来发电。然而,为小型移动电子产品生产高密度的电力具有挑战性。摩擦纳米发电机(TENG)可以将水滴转化为电能,为小型电子产品提供可持续的电力。此外,水力发电装置 (HD) 可以将水蒸发产生的能量转化为小型电子设备的电能。在此,通过将 TENG 与 HD 相结合,提出了一种旨在从撞击水滴和蒸发中收集能量的集成装置。一种包含氟化乙烯丙烯 (FEP) 薄膜作为带有铝电极的摩擦电层的结构用于收集撞击水滴的能量。具有不对称结构的硅基 HD,其中纳米结构硅和分层纳米纤维碳电极用于从蒸发的水滴中收集能量。以银为互电极,将TENG与HD结合,充分利用落下的水滴能量发电。在 FEP 薄膜表面构建微结构以扩大液滴与 FEP 之间的接触面积,从而在脉冲模式下分别以 200 V 的开路电压和 60 μA 的短路电流极大地提高了 TENG 的输出。同时,HD 器件产生 550 mV 的一致开路电压和 30 μA/cm 的短路电流密度 以银为互电极,将TENG与HD结合,充分利用落下的水滴能量发电。在 FEP 薄膜表面构建微结构以扩大液滴与 FEP 之间的接触面积,从而在脉冲模式下分别以 200 V 的开路电压和 60 μA 的短路电流极大地提高了 TENG 的输出。同时,HD 器件产生 550 mV 的一致开路电压和 30 μA/cm 的短路电流密度 以银为互电极,将TENG与HD结合,充分利用落下的水滴能量发电。在 FEP 薄膜表面构建微结构以扩大液滴与 FEP 之间的接触面积,从而在脉冲模式下分别以 200 V 的开路电压和 60 μA 的短路电流极大地提高了 TENG 的输出。同时,HD 器件产生 550 mV 的一致开路电压和 30 μA/cm 的短路电流密度 分别。同时,HD 器件产生 550 mV 的一致开路电压和 30 μA/cm 的短路电流密度 分别。同时,HD 器件产生 550 mV 的一致开路电压和 30 μA/cm 的短路电流密度2 . 这种集成设备提供了一种智能策略,通过从撞击的水滴和蒸发中充分收集能量来发电,为高效收集水能铺平了道路。

更新日期:2022-06-14
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