A high-performance triboelectric-electromagnetic hybrid wind energy harvester based on rotational tapered rollers aiming at outdoor IoT applications

Fang, Yan; Tang, Tianyi; Li, Yunfei; Hou, Cheng; Wen, Feng; Yang, Zhan; Chen, Tao; Sun, Lining; Liu, Huicong; Lee, Chengkuo

doi:10.1016/j.isci.2021.102300

Cited by 68 publications

(29 citation statements)

References 66 publications

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“…Combining the wireless self-powered sensors and EHs, IoT systems with self-sustainability have been successfully achieved and applied in urban and natural environments [160][161][162]. Recent works include a wristband with self-sustained gas sensing, an armband for electrocardiography, and wearable textile for rehabilitation [163][164][165].…”

Section: Self-sustained Iot System and Emerged Approachesmentioning

confidence: 99%

Recent Progress in the Energy Harvesting Technology—From Self-Powered Sensors to Self-Sustained IoT, and New Applications

et al. 2021

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With the fast development of energy harvesting technology, micro-nano or scale-up energy harvesters have been proposed to allow sensors or internet of things (IoT) applications with self-powered or self-sustained capabilities. Facilitation within smart homes, manipulators in industries and monitoring systems in natural settings are all moving toward intellectually adaptable and energy-saving advances by converting distributed energies across diverse situations. The updated developments of major applications powered by improved energy harvesters are highlighted in this review. To begin, we study the evolution of energy harvesting technologies from fundamentals to various materials. Secondly, self-powered sensors and self-sustained IoT applications are discussed regarding current strategies for energy harvesting and sensing. Third, subdivided classifications investigate typical and new applications for smart homes, gas sensing, human monitoring, robotics, transportation, blue energy, aircraft, and aerospace. Lastly, the prospects of smart cities in the 5G era are discussed and summarized, along with research and application directions that have emerged.

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Section: Self-sustained Iot System and Emerged Approachesmentioning

confidence: 99%

Recent Progress in the Energy Harvesting Technology—From Self-Powered Sensors to Self-Sustained IoT, and New Applications

et al. 2021

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“…[18] Recently, several prototypes of triboelectric-electromagnetic hybrid nanogenerators have been developed to effectively harvest mechanical energy. [19][20][21][22][23][24][25][26][27] However, the output characteristics of the two generators were not systematically compared with each other. A common character is that their output characteristics were compared under a circumstance of non-rectification, and the outputs of EMG are higher than those of TENG.…”

Section: Introductionmentioning

confidence: 99%

Swing‐Structured Triboelectric–Electromagnetic Hybridized Nanogenerator for Breeze Wind Energy Harvesting

Pang

Ren

et al. 2021

Adv Materials Technologies

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Wind energy is one of the most promising renewable energy sources, but harvesting low frequency breeze wind energy is hardly achieved using traditional electromagnetic generators (EMGs). Triboelectric nanogenerators (TENGs) provide a new approach for large‐scale collection of distributed breeze wind energy (usually 3.4–5.4 m s−1). Herein, by coupling the TENG and EMG, a swing‐structured hybrid nanogenerator with improved performance and durability is designed. The dielectric brush and air gap designs can minimize the material wear and continuously supply the tribo‐charges. Under external triggering, systematic comparisons are made about the output characteristics of TENG and EMG. The rectified peak power and average power of TENG are respectively, 60 and 635 times higher than those of EMG at moderate coil turn numbers, showing that TENG is much more effective than EMG for harvesting low‐frequency distributed energy (high entropy energy). Furthermore, the hybrid nanogenerator and array device are hung on tree branches to demonstrate the effective harvesting of breeze wind energy, delivering total rectified peak power densities of 2.07 and 1.94 W m–3 for single and array devices, respectively. The applications of powering portable electronics reveal the huge prospects of hybrid nanogenerator in self‐powered environmental monitoring toward forest/park fire warning systems.

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“…Notably, relatively accurate perception of ocean motion Ocean waves are characterized by irregular motion, ultra-low frequency vibrations, and long periodicity, which poses great challenges to the development of ocean wave sensors. [10][11][12][13] Triboelectric nanogenerators (TENGs), [14][15][16][17][18][19][20] based on the triboelectrification effect and electrostatic induction, [21][22][23] have shown promise in ocean wave sensing. This is because TENGs have many advantages, including low cost, simple structure, lightweight, high power density, and random acquisition of low-frequency vibration energy.…”

Section: Introductionmentioning

confidence: 99%

A Self‐powered Triboelectric Coral‐Like Sensor Integrated Buoy for Irregular and Ultra‐Low Frequency Ocean Wave Monitoring

Wang

Liu

Wang

et al. 2021

Adv Materials Technologies

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remains a challenge, especially the perception of ocean waves motion. [1][2][3][4] Ocean wave sensing devices based on additional complex mechanical and hydraulic structures typically transform the multidirectional wave motion into linear reciprocation or rotation of these structures to generate electric signals. However, some such devices are restrained by several drawbacks, including lower accuracy and robustness and expensive maintenance costs. Furthermore, impeller-type sensors increase the risk of collision between marine animals, [5] remote radar sensors impact the lives of marine animals due to the generation of a strong electromagnetic field, [6] and the laying of large sensing equipment generates noises and disturbances to marine animals [7] and changes hydrodynamic conditions. Conventional signal processing strategies have been demonstrated to possibly provide insufficient information to estimate ocean wave cues, resulting in difficulty to meet the requirements of high accuracy (error range in the order of 1 m). [8,9] Moreover, most of these ocean wave sensors need an external power supply, and the high cost of power supply limits their development. Therefore, novel ocean wave sensing techniques are still an open research topic.The design of efficient ocean wave sensors for monitoring the marine environment and revealing dynamic changes has been a major challenge. In this study, a self-powered bionic coral wave sensor (BCWS) based on a triboelectric nanogenerator is proposed. The BCWS captures wave data, which are useful for marine engineering construction, marine resource development, and marine disaster warning. It is mainly composed of triboelectric perceiving units (60 mm in length, 10 mm in width, and 1.5 mm in thickness) encapsulated in coral tentacles, a fixation mechanism, a buoyancy tray, and a counterweight mechanism. With the help of its bio-inspired structural design, the BCWS effectively improves the signal response time and sensitivity in the 3D perception of wave information. In particular, the coral tentacles stimulated by a load cause contact-separation between fluorinated ethylene propylene and conductive ink electrodes, thereby generating electric signals. This analysis of the experimental data reveals that the BCWS perceives wave height, wave frequency, wave period, and wave direction with millimeter accuracy. To demonstrate the applicability and stability of the BCWS, several of its potential functions are illustrated, including controlling light emitting diodes, perceiving wave information in the ocean, and assisting overboard rescue. The results show that the BCWS provides an intelligent solution for modern marine monitoring.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/admt.202101098.

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A high-performance triboelectric-electromagnetic hybrid wind energy harvester based on rotational tapered rollers aiming at outdoor IoT applications

Cited by 68 publications

References 66 publications

Recent Progress in the Energy Harvesting Technology—From Self-Powered Sensors to Self-Sustained IoT, and New Applications

Recent Progress in the Energy Harvesting Technology—From Self-Powered Sensors to Self-Sustained IoT, and New Applications

Swing‐Structured Triboelectric–Electromagnetic Hybridized Nanogenerator for Breeze Wind Energy Harvesting

A Self‐powered Triboelectric Coral‐Like Sensor Integrated Buoy for Irregular and Ultra‐Low Frequency Ocean Wave Monitoring

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