Overview of micro/nano-wind energy harvesters and sensors

Fu, Xianpeng; Bu, Tianzhao; Li, Chenglin; Liu, Guoxu; Zhang, Chi

doi:10.1039/d0nr06373h

Cited by 46 publications

(20 citation statements)

References 78 publications

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“…In addition, the power supply based on a mass of chemical batteries is not sustainable and will cause pollution to the environment [5]. In order to ensure the power supply for distributed sensor networks and communication electronic equipment, researchers have developed many methods to collect energy from sunlight [6], wind [7][8][9], and vibrational mechanical energy [10] based on electromagnetic induction effect [11], photovoltaic effect [12], thermoelectric effect [13] and piezoelectric effect [14], as well as lithiation thermodynamics [15].…”

Section: Introductionmentioning

confidence: 99%

Recent Progress of Switching Power Management for Triboelectric Nanogenerators

Zhou

Liu

Zeng

et al. 2022

Sensors

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Based on the coupling effect of contact electrification and electrostatic induction, the triboelectric nanogenerator (TENG) as an emerging energy technology can effectively harvest mechanical energy from the ambient environment. However, due to its inherent property of large impedance, the TENG shows high voltage, low current and limited output power, which cannot satisfy the stable power supply requirements of conventional electronics. As the interface unit between the TENG and load devices, the power management circuit can perform significant functions of voltage and impedance conversion for efficient energy supply and storage. Here, a review of the recent progress of switching power management for TENGs is introduced. Firstly, the fundamentals of the TENG are briefly introduced. Secondly, according to the switch types, the existing power management methods are summarized and divided into four categories: travel switch, voltage trigger switch, transistor switch of discrete components and integrated circuit switch. The switch structure and power management principle of each type are reviewed in detail. Finally, the advantages and drawbacks of various switching power management circuits for TENGs are systematically summarized, and the challenges and development of further research are prospected.

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Section: Introductionmentioning

confidence: 99%

Recent Progress of Switching Power Management for Triboelectric Nanogenerators

Zhou

Liu

Zeng

et al. 2022

Sensors

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“…[15,35] To the best of our knowledge, our work represents the first demonstration of piezoelectrically enhanced electrocatalysis of AA. The demonstrated piezo-electrocatalytic process could utilize the otherwise wasted environmental mechanical energy (e.g., wind energy, [36] wave energy, [37] tidal energy, [38] and biomechanical energy [39] ) to boost the electrocatalytic efficiency. The concept of piezo-electrocatalysis can be extended to numerous other catalytic processes of biomedical, [40] pharmaceutical, [41] and agricultural interest.…”

Section: Introductionmentioning

confidence: 99%

High‐Performance Piezo‐Electrocatalytic Sensing of Ascorbic Acid with Nanostructured Wurtzite Zinc Oxide

et al. 2021

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plays a vital role in biological metabolisms, for example, the digestion of amino acids, as well as the synthesis of adrenalin, certain hormones, and neurotransmitters. [2] AA has also been commonly used for the prevention and treatment of scurvy, [3] cancer, [4] common cold, [5] and AIDS, [6] etc. The design and implementation of cost-effective, high-performance electrochemical sensors for the rapid and accurate quantification of AA concentration in foods or biological fluids are important for many societally pervasive applications such as clinical diagnostics, [7] wearable health monitoring, [8] food safety, [9] and environmental monitoring. [10] However, the direct electrooxidation of AA on the surface of the bare electrodes is irreversible. [11] Moreover, the subsequent hydrolysis of the reaction will cause electrode fouling with large overpotential, poor selectivity, low sensitivity, and unsatisfactory reproducibility. [12] Nanostructured catalysts with large specific surfaces and abundant active sites appeal to highly sensitive electrochemical sensing of various chemicals. Various nanomaterials, such as conducting polymers, [13] carbon materials, [14] and metal oxides, [15] have been explored for modifying the electrodes to efficiently detect AA, Nanostructured piezoelectric semiconductors offer unprecedented opportunities for high-performance sensing in numerous catalytic processes of biomedical, pharmaceutical, and agricultural interests, leveraging piezocatalysis that enhances the catalytic efficiency with the strain-induced piezoelectric field. Here, a cost-efficient, high-performance piezo-electrocatalytic sensor for detecting l-ascorbic acid (AA), a critical chemical for many organisms, metabolic processes, and medical treatments, is designed and demonstrated. Zinc oxide (ZnO) nanorods and nanosheets are prepared to characterize and compare their efficacy for the piezo-electrocatalysis of AA. The electrocatalytic efficacy of AA is significantly boosted by the piezoelectric polarization induced in the nanostructured semiconducting ZnO catalysts. The charge transfer between the strained ZnO nanostructures and AA is elucidated to reveal the mechanism for the related piezo-electrocatalytic process. The lowtemperature synthesis of high-quality ZnO nanostructures allows low-cost, scalable production, and integration directly into wearable electrocatalytic sensors whose performance can be boosted by otherwise wasted mechanical energy from the working environment, for example, human-generated mechanical signals.

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“…[ 12 ] Originating from the second term of Maxwell's displacement current, [ 13,14 ] the TENG with appropriate power management strategy [ 15,16 ] has incomparable advantages in harvesting low frequency and micro‐amplitude mechanical energy [ 17 ] from environment on account of its flexible structure [ 18 ] and intrinsic electrical characteristics. Therefore, its applications in wind, [ 19–21 ] ocean wave, [ 22–24 ] raindrops, [ 25–27 ] mechanical vibration, [ 28–30 ] human body movements, [ 31–33 ] etc. have been reported during the past few years.…”

Section: Introductionmentioning

confidence: 99%

Dual Mode Rotary Triboelectric Nanogenerator for Collecting Kinetic Energy from Bicycle Brake

Zhou

Liu

Gao

et al. 2021

Adv Energy and Sustain Res

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Regenerative braking system is a promising technology for electrical vehicles, in which the excess kinetic energy can be effectively collected and utilized. As a new energy technology based on contact electrification, triboelectric nanogenerator (TENG) is suitable for harvesting dissipated kinetic energy in braking systems. Herein, a dual mode rotary TENG (DMR‐TENG) is reported, which is installed on the bicycle disc brake for collecting kinetic energy in riding mode and braking mode. First, the electric generation mechanism of DMR‐TENG is analyzed and then the characteristics in different structural and kinematic parameters by simulation and experiment are investigated. Furthermore, a linkage mechanism is designed for two modes switching by controlling the distance between two triboelectric layers of the DMR‐TENG. The results illustrate that the DMR‐TENG can simultaneously illuminate 156 serial LEDs as a warning signal while riding and braking. In addition, it can charge a 300 μF capacitor and act as a power source to drive a speedometer, which can measure the bicycle speed in real time. Herein, a considerable prospect in vehicle kinetic energy collecting is demonstrated and may have potential application in intelligent transportation.

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Overview of micro/nano-wind energy harvesters and sensors

Abstract: Wind energy has attracted more and more attention among researchers in both energy harvesting and sensing fields. Here, the micro/nano wind energy harvesters and sensors are systematically reviewed and prospected.

Cited by 46 publications

References 78 publications

Recent Progress of Switching Power Management for Triboelectric Nanogenerators

Recent Progress of Switching Power Management for Triboelectric Nanogenerators

High‐Performance Piezo‐Electrocatalytic Sensing of Ascorbic Acid with Nanostructured Wurtzite Zinc Oxide

Dual Mode Rotary Triboelectric Nanogenerator for Collecting Kinetic Energy from Bicycle Brake

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