An Ultra-Durable Windmill-Like Hybrid Nanogenerator for Steady and Efficient Harvesting of Low-Speed Wind Energy

Zhang, Ying; Zeng, Qixuan; Wu, Yan; Wu, Jun; Yuan, Songlei; Tan, Dujuan; Hu, Chenguo; Wang, Xue

doi:10.1007/s40820-020-00513-2

Cited by 79 publications

(51 citation statements)

References 52 publications

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“…With the development of flexible human–machine interface devices, intensive progress has been realized by utilizing deformable conductors [ 25 , 26 ], stretchable sensors [ 27 , 28 ], or flexible films [ 29 – 31 ]. However, polymer substrates, such as polyethylene terephthalate (PET), polyimide (PI), and polydimethylsiloxane (PDMS), were used for most flexible human–machine interface devices [ 32 , 33 ], have the disadvantage of low fit and unsatisfying comfort for human body. Textiles, due to their merits of hygroscopic, soft, breathable, and comfortable to human, are considered as ideal vehicles to design flexible human–machine interfacing devices, especially for wearable electronics with personal healthcare/biomedical monitoring or biometrics [ 10 , 34 – 36 ].…”

Section: Introductionmentioning

confidence: 99%

Fully Fabric-Based Triboelectric Nanogenerators as Self-Powered Human–Machine Interactive Keyboards

et al. 2021

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Combination flexible and stretchable textiles with self-powered sensors bring a novel insight into wearable functional electronics and cyber security in the era of Internet of Things. This work presents a highly flexible and self-powered fully fabric-based triboelectric nanogenerator (F-TENG) with sandwiched structure for biomechanical energy harvesting and real-time biometric authentication. The prepared F-TENG can power a digital watch by low-frequency motion and respond to the pressure change by the fall of leaves. A self-powered wearable keyboard (SPWK) is also fabricated by integrating large-area F-TENG sensor arrays, which not only can trace and record electrophysiological signals, but also can identify individuals' typing characteristics by means of the Haar wavelet. Based on these merits, the SPWK has promising applications in the realm of wearable electronics, self-powered sensors, cyber security, and artificial intelligences.

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Section: Introductionmentioning

confidence: 99%

Fully Fabric-Based Triboelectric Nanogenerators as Self-Powered Human–Machine Interactive Keyboards

et al. 2021

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“…Although the friction of the TENG part has been reduced by using the contact-separation mode, friction still exists at the rotational EMG which requires the slowest driving wind speed to exceed 4 m s −1 , greatly limiting its application for low-speed breeze energy harvesting. Thus, Zhang et al reported a windmill-like hybrid generator applicable to low-speed wind as illustrated in Figure 3(e) [ 104 ]. The spring steel sheet and the magnets mounted on the fan can effectively reduce the rotation resistance.…”

Section: Teng-based Hybrid Generators For Outdoor Applicationsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Triboelectric Nanogenerators and Hybridized Systems for Enabling Next-Generation IoT Applications

et al. 2021

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In the past few years, triboelectric nanogenerator-based (TENG-based) hybrid generators and systems have experienced a widespread and flourishing development, ranging among almost every aspect of our lives, e.g., from industry to consumer, outdoor to indoor, and wearable to implantable applications. Although TENG technology has been extensively investigated for mechanical energy harvesting, most developed TENGs still have limitations of small output current, unstable power generation, and low energy utilization rate of multisource energies. To harvest the ubiquitous/coexisted energy forms including mechanical, thermal, and solar energy simultaneously, a promising direction is to integrate TENG with other transducing mechanisms, e.g., electromagnetic generator, piezoelectric nanogenerator, pyroelectric nanogenerator, thermoelectric generator, and solar cell, forming the hybrid generator for synergetic single-source and multisource energy harvesting. The resultant TENG-based hybrid generators utilizing integrated transducing mechanisms are able to compensate for the shortcomings of each mechanism and overcome the above limitations, toward achieving a maximum, reliable, and stable output generation. Hence, in this review, we systematically introduce the key technologies of the TENG-based hybrid generators and hybridized systems, in the aspects of operation principles, structure designs, optimization strategies, power management, and system integration. The recent progress of TENG-based hybrid generators and hybridized systems for the outdoor, indoor, wearable, and implantable applications is also provided. Lastly, we discuss our perspectives on the future development trend of hybrid generators and hybridized systems in environmental monitoring, human activity sensation, human-machine interaction, smart home, healthcare, wearables, implants, robotics, Internet of things (IoT), and many other fields.

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“…There are four major transduction mechanisms for converting mechanical energy into electrical energy, namely piezoelectric [11][12][13], electromagnetic/magnetostrictive [14][15][16][17][18][19], electrostatic [20][21][22][23] and triboelectric [24][25][26][27][28][29][30]. Triboelectric nanogenerators (TENGs) were first proposed by Professor Zhonglin Wang's group in 2012.…”

Section: Introductionmentioning

confidence: 99%

“…Piezoelectric harvesters usually operate on stretching or compressing piezoelectric materials, such as piezoelectric polymers and piezoelectric ceramics, thus transforming mechanical strain or stress into electricity due to the piezoelectric effect [31][32][33][34][35]. Among these mechanisms, the triboelectric nanogenerator presents numerous advantages in terms of high output voltage and efficiency, ease of structural design and fabrication, diverse material selection, low-cost and broad low-frequency application scenarios such as human motion and aircraft morphing wing oscillation [25,26,[36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Honeycomb-Structured Electret/Triboelectric Nanogenerator for Biomechanical and Morphing Wing Energy Harvesting

Tao

Chen

et al. 2021

Nano-Micro Lett.

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Flexible, compact, lightweight and sustainable power sources are indispensable for modern wearable and personal electronics and small-unmanned aerial vehicles (UAVs). Hierarchical honeycomb has the unique merits of compact mesostructures, excellent energy absorption properties and considerable weight to strength ratios. Herein, a honeycomb-inspired triboelectric nanogenerator (h-TENG) is proposed for biomechanical and UAV morphing wing energy harvesting based on contact triboelectrification wavy surface of cellular honeycomb structure. The wavy surface comprises a multilayered thin film structure (combining polyethylene terephthalate, silver nanowires and fluorinated ethylene propylene) fabricated through high-temperature thermoplastic molding and wafer-level bonding process. With superior synchronization of large amounts of energy generation units with honeycomb cells, the manufactured h-TENG prototype produces the maximum instantaneous open-circuit voltage, short-circuit current and output power of 1207 V, 68.5 μA and 12.4 mW, respectively, corresponding to a remarkable peak power density of 0.275 mW cm−3 (or 2.48 mW g−1) under hand pressing excitations. Attributed to the excellent elastic property of self-rebounding honeycomb structure, the flexible and transparent h-TENG can be easily pressed, bent and integrated into shoes for real-time insole plantar pressure mapping. The lightweight and compact h-TENG is further installed into a morphing wing of small UAVs for efficiently converting the flapping energy of ailerons into electricity for the first time. This research demonstrates this new conceptualizing single h-TENG device's versatility and viability for broad-range real-world application scenarios.

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An Ultra-Durable Windmill-Like Hybrid Nanogenerator for Steady and Efficient Harvesting of Low-Speed Wind Energy

Cited by 79 publications

References 52 publications

Fully Fabric-Based Triboelectric Nanogenerators as Self-Powered Human–Machine Interactive Keyboards

Fully Fabric-Based Triboelectric Nanogenerators as Self-Powered Human–Machine Interactive Keyboards

Triboelectric Nanogenerators and Hybridized Systems for Enabling Next-Generation IoT Applications

Hierarchical Honeycomb-Structured Electret/Triboelectric Nanogenerator for Biomechanical and Morphing Wing Energy Harvesting

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