Nanopillar-array architectured PDMS-based triboelectric nanogenerator integrated with a windmill model for effective wind energy harvesting

Self Cite

111

Triboelectric nanogenerators (TENGs) are gaining much research interest recently owing to their facile and cost-effective device structure. However, the effect of relative humidity (in moisture atmosphere) on the output performance still needs to be resolved. Herein, a pouch-type TENG is proposed to significantly reduce the effect of relative humidity on its electrical output and a stable performance is also attained in a humid environment. In this regard, a dielectric and dielectric materials-based TENG (DD-TENG) is first developed using nanoarchitecture polydimethylsiloxane (NA-PDMS) and multiwalled carbon nanotube/nylon composite layers as a triboelectric material with the negative and positive tendencies, respectively. The NA-PDMS and nylon composite layers play a key role in increasing the surface contact area and surface charge density between the dielectric/triboelectric materials as well as the output performance of DD-TENG. However, the DD-TENG device exhibits a stable and high output performance with the effective output power density of ≈25.35 W m −2 . Additionally, the performance of the pouch-type DD-TENG device is not almost affected even though the relative humidity is increased from 35 to 81%, while it is dramatically decreased for the nonpouchtype device. Finally, the pouch-type DD-TENG is employed as a wearable device to effectively harvest the mechanical energy from daily human activities.

Section: Introductionmentioning

confidence: 99%

Humidity Sustained Wearable Pouch‐Type Triboelectric Nanogenerator for Harvesting Mechanical Energy from Human Activities

Mule

Dudem

Graham

et al. 2019

Self Cite

111

“…Different from conventional electromagnetic generators, TENGs originating from the Maxwell's displacement current are based on the varying polarization field induced by surface polarization charges rather than the varying magnetic field to generate electricity . Since its birth, different TENGs have been designed and utilized to harvest low frequency energies, such as energies from human motion, wind, and water waves . Moreover, rolling spherical TENGs and coupled TENG networks have been demonstrated to harness the water wave energy, because of the advantages of light‐weight, small‐resistance under the water wave motions, and easy to be integrated, etc .…”

Section: Introductionmentioning

confidence: 99%

Spherical Triboelectric Nanogenerators Based on Spring‐Assisted Multilayered Structure for Efficient Water Wave Energy Harvesting

Xiao

Ling

Jiang

et al. 2018

194

113

Making use of water wave energy at large is one of the most attractive, low-carbon, and renewable ways to generate electric power. The emergence of triboelectric nanogenerator (TENG) provides a new approach for effectively harvesting such low-frequency, irregular, and "random" energy. In this work, a TENG array consisting of spherical TENG units based on springassisted multilayered structure is devised to scavenge water wave energy. The introduction of spring structure enhances the output performance of the spherical TENG by transforming low-frequency water wave motions into high-frequency vibrations, while the multilayered structure increases the space utilization, leading to a higher output of a spherical unit. Owing to its unique structure, the output current of one spherical TENG unit could reach 120 µA, which is two orders of magnitude larger than that of previous rolling spherical TENG, and a maximum output power up to 7.96 mW is realized as triggered by the water waves. The TENG array fabricated by integrating four units is demonstrated to successfully drive dozens of light-emitting diodes and power an electronic thermometer. This study provides a new type of TENG device with improved performance toward large-scale blue energy harvesting from the water waves.

“…Among various mechanical energies, wind energy is absolutely abundant in our surrounding environment, foreseeing an important role in the future electricity market . As compared to the wind‐turbine‐based wind energy generator, the recently developed wind‐driven triboelectric nanogenerators have advantages such as simple structure, small and light, and easy manufacturing and installation . As shown in Figure a, the effective vibration of Kapton film for triboelectrification mainly happens at the end of the acrylic tube .…”

Section: Hybridized Nanogenerator For Scavenging Wind Energymentioning

confidence: 99%

Structure Design and Performance of Hybridized Nanogenerators

Zhang

Wang

Yang

2018

Intelligent energy generation from ambient environment by various nanogenerators is desirable to realize self-powered operation of electronics. By integrating two or more kinds of nanogenerators, a hybridized nanogenerator provides a possible solution to largely increase the total electric power, and thus has been considered as one of the most significant energy-related technologies. Here, emerging advancements in hybridized nanogenerators are summarized in terms of their structures, principles, and potential applications. In particular, one-structure-based coupled nanogenerators based on multifunctional energy-scavenging materials and the interface regulation of solar cells by inner nanogenerators are discussed. For potential applications in wearable electronics, the new progress on flexible hybridized nanogenerators is presented on the basis of stretchable and mechanically durable materials, substrates, and electrodes. With the advances highlighted here and the ongoing research efforts, the continuous breakthrough in hybridized nanogenerators for multiple energy scavenging and their extensive applications is foreseeable in the future.The electromagnetic effect and the triboelectric effect are two promising approaches for scavenging mechanical energy (e.g., wind energy, [14] biomechanical energy, [15] rotational energy, [16] and water wave energy [17] ). By integrating electromagnetic and triboelectric effects in one device, a mechanical motion can generate more electricity, showing potential in powering electronics with large power requirement, [14,[18][19][20] as shown in Figure 1. The fundamental of electromagnetic effect is the Faraday's law of electromagnetic induction with the relative movement between the magnet and the coil, while the triboelectric effect is based on the coupling of triboelectrification and electrostatic induction during the periodic contact/separation