Hybrid energy harvester with bi-functional nano-wrinkled anti-reflective PDMS film for enhancing energies conversion from sunlight and raindrops

Liu, Xiaolan; Cheng, Ke; Cui, Peng; Qi, Hui; Qin, Huaifang; Gu, Guangqin; Shang, Wanyu; Wang, Shujie; Cheng, Gang; Du, Zongliang

doi:10.1016/j.nanoen.2019.104188

Cited by 65 publications

(39 citation statements)

References 51 publications

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“…The incident angle of water dripping direction and the contact surface was settled at 45°as the optimal angle for the highest harvesting performance. 24 A series of liquids including deionized (DI) water, tap water, sodium chloride (NaCl) solution (0.1 M), and actual rainwater were selected for water energy-harvesting demonstration, and the output voltage and current of WH-TENG with respect to various liquids at a dripping volume of 40 μL and dripping height of 5 cm are shown in Figure 3c,d, respectively. It is found that the fluid types have an impact on the output voltage and current with the trend following rainwater > tap water > 0.1 M NaCl solution > DI water.…”

Section: Resultsmentioning

confidence: 99%

“…Third, it is beneficial if the TENG on the top can contribute to the PCE of the solar cell and thus boosts the overall performance of the whole system for energy harvesting. Accordingly, researchers have constructed a series of hybrid systems with the focus on improving the PCE of the solar cell by introducing an antireflective function, for example, imprinted PDMS, 23 nanowrinkled PDMS, 24 and Moth's eye mimicking quartz glass. 25 However, all the above endeavors were focusing on texturing the electrification layer of TENGs by applying highly specialized etching processes or imprinting techniques, which are expensive and/or not appropriate for the large-scale fabrication.…”

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confidence: 99%

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Carbon Dot-Based Composite Films for Simultaneously Harvesting Raindrop Energy and Boosting Solar Energy Conversion Efficiency in Hybrid Cells

Wang

et al. 2020

ACS Nano

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Energy harvesting has drawn worldwide attention as a sustainable technology, while combining several approaches in a single device to maximize the overall energy output holds great promise to offer valuable technologies able to alleviate the energy crisis. Here, we present a hybrid cell composed of a silicon solar cell and a water-droplet-harvesting triboelectric nanogenerator (WH-TENG) with the capacity of harvesting both solar and raindrop energies. A transparent and solution processable carbon dot-based composite film is introduced as a dual-functional layer, acting as the transmittance enhancement layer of the solar cell as well as an ionic conductor of the WH-TENG. At an optimal loading of carbon dots in the composite, the significant enhancement of transmittance in visible spectral range increases the short-circuit current density of the solar cell, which results in an increase of its power conversion efficiency from 13.6% to 14.6%. In addition, the transparent WH-TENG consisting of fluorinated ethylene propylene as a triboelectrification layer can generate a maximum power of 13.9 μW by collecting raindrop energy. This study provides a promising strategy to boost the energy conversion through multiple sources with the aid of a dual-functional layer for enhancing solar cell performance as well as harvesting raindrop energy.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Carbon Dot-Based Composite Films for Simultaneously Harvesting Raindrop Energy and Boosting Solar Energy Conversion Efficiency in Hybrid Cells

Wang

et al. 2020

ACS Nano

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“…And in previous studies, the contact electrification effect between water drops and the polymer surface has been confirmed. [16,12] When the falling water drops contact the m-FCB@PDMS, surface charge transfer occurs between the interfaces. In the process of water drops leaving m-FCB@PDMS film, a certain potential difference will be formed between the Cu electrode of m-FCB@PDMS film and ground.…”

Section: Working Principle and Performance Of The Dsr-sensormentioning

confidence: 99%

Dual‐Mode Self‐Powered Rainfall Sensor Based on Interfacial‐Polarization‐Enhanced and Nanocapacitor‐Embedded FCB@PDMS Composite Film

Song

Han

et al. 2022

Adv Materials Technologies

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The uneven time‐space distribution of rainfall can easily induce droughts and floods disasters. Meteorological sensor based on battery supply plays an important role to monitor and warn rainfall intensity, however it is limited by the frequent replacement of battery. In this paper, a dual mode self‐powered rainfall sensor (DSR‐Sensor) based on hybrid enhanced triboelectric nanogenerator (TENG) is first proposed. The DSR‐Sensor is fabricated with frictional layer of polydimethylsiloxane (PDMS) and the electrode layer of Cu. These layers are assembled into TENG composed of single electrode mode and contact separation mode. To increase the specific surface, the surface of PDMS film is modified by microimprint process. To accumulate more induced charges, the film is further doped with nanoparticles of fluorinated carbon black based on the effect of nanocapacitor interface polarization. The measured rainfall intensity ranges from 0.1 to 12 mm min−1, which has obvious advantage compared with the ordinary commercial sensor. The sensitivity and linearity are 5.5237 V mm min–1 and 0.9692, respectively. Also, the electrical output performances keep well in multiple tests of continuous 600 s within one month, which shows excellent stability. These results suggest great realistic potential of the self‐powered DSR‐Sensor in the field of meteorological environment monitoring.

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“…Moreover, the electronic devices in rain gauges are mainly powered by short-lived batteries, which greatly increases maintenance costs and environmental pollution. Therefore, harvesting raindrop energy 11,12 from the ambient environment to power rain gauges is an alternative method for realizing sustainable rainfall monitoring 13,14 .…”

Section: Introductionmentioning

confidence: 99%

Raindrop energy-powered autonomous wireless hyetometer based on liquid–solid contact electrification

et al. 2022

Microsyst Nanoeng

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Triboelectric nanogenerators (TENGs) can directly harvest energy via solid–liquid interface contact electrification, making them very suitable for harvesting raindrop energy and as active rainfall sensors. This technology is promising for realizing a fully self-powered system for autonomous rainfall monitoring combined with energy harvesting/sensing. Here, we report a raindrop energy-powered autonomous rainfall monitoring and wireless transmission system (R-RMS), in which a raindrop-TENG (R-TENG) array simultaneously serves as a raindrop energy harvester and rainfall sensor. At a rainfall intensity of 71 mm/min, the R-TENG array can generate an average short-circuit current, open-circuit voltage, and maximum output power of 15 μA, 1800 V, and 325 μW, respectively. The collected energy can be adjusted to act as a stable 2.5 V direct-current source for the whole system by a power management circuit. Meanwhile, the R-TENG array acts as a rainfall sensor, in which the output signal can be monitored and the measured data are wirelessly transmitted. Under a rainfall intensity of 71 mm/min, the R-RMS can be continuously powered and autonomously transmit rainfall data once every 4 min. This work has paved the way for raindrop energy-powered wireless hyetometers, which have exhibited broad prospects in unattended weather monitoring, field surveys, and the Internet of Things.

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Hybrid energy harvester with bi-functional nano-wrinkled anti-reflective PDMS film for enhancing energies conversion from sunlight and raindrops

Cited by 65 publications

References 51 publications

Carbon Dot-Based Composite Films for Simultaneously Harvesting Raindrop Energy and Boosting Solar Energy Conversion Efficiency in Hybrid Cells

Carbon Dot-Based Composite Films for Simultaneously Harvesting Raindrop Energy and Boosting Solar Energy Conversion Efficiency in Hybrid Cells

Dual‐Mode Self‐Powered Rainfall Sensor Based on Interfacial‐Polarization‐Enhanced and Nanocapacitor‐Embedded FCB@PDMS Composite Film

Raindrop energy-powered autonomous wireless hyetometer based on liquid–solid contact electrification

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