All-in-one energy harvesting and storage devices

Lee, Ju‐Hyuck; Kim, Jeonghun; Kim, Tae Yun; Hossain, Md. Shahriar A.; Kim, Sang Woo; Kim, Jung Ho

doi:10.1039/c6ta01229a

Cited by 251 publications

(147 citation statements)

References 231 publications

Supporting

Mentioning

145

Contrasting

Order By: Relevance

“…A serious of rationally designed MME generators with piezoelectric single crystals had shown great potential for scavenging weak and irregular magnetic energy. [1][2][3][4][5][6][7][8] The needs of the Internet of Things (IoTs) and the advent of lower-power consumption electronic modules are moving energy harvesting systems such as self-powered energy devices from niche applications to broad-scale practicality. [19] However, recent investigations have determined that FOM could not explain completely the output performance of such energy harvesters.…”

mentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8] The needs of the Internet of Things (IoTs) and the advent of lower-power consumption electronic modules are moving energy harvesting systems such as self-powered energy devices from niche applications to broad-scale practicality. [1][2][3][4][5][6][7][8] The needs of the Internet of Things (IoTs) and the advent of lower-power consumption electronic modules are moving energy harvesting systems such as self-powered energy devices from niche applications to broad-scale practicality.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Low‐Loss Piezoelectric Single‐Crystal Fibers for Enhanced Magnetic Energy Harvesting with Magnetoelectric Composite

Annapureddy

Kim

Palneedi

et al. 2016

Advanced Energy Materials

103

View full text Add to dashboard Cite

The concept of magneto-mechano-electric (MME) energy conversion has been demonstrated using a magnetoelectric (ME) composite, with cantilever structure working at resonating mode, to reliably covert low-frequency magnetic noise fields to electric power. [19,20] This process is the result of multiple energy transductions starting from magnetic energy to mechanical energy and then to electrical energy. An MME generator is known to be more efficient than an electromagnetic generator at a small scale in a low frequency magnetic field. A serious of rationally designed MME generators with piezoelectric single crystals had shown great potential for scavenging weak and irregular magnetic energy. [19][20][21][22] The harvesting performance of piezoelectric-based energy harvesters is directly related to the product of the piezoelectric strain constant, d ij and the piezoelectric voltage constant, g ij (the mathematical product of which is called the figure of merit: FOM = d ij × g ij ), under constant applied stress. [19] However, recent investigations have determined that FOM could not explain completely the output performance of such energy harvesters. [19,23] This is because the hysteresis (or non-linearity) of the piezoelectric materials is related to losses such as dielectric loss (inverse of electrical quality factor) and mechanical loss (inverse of mechanical quality factor); and consequently, performance degradation of the device. Therefore, to improve the harvesting performance, it is important to know how the loss factors affect the harvested output power in MME generators.To provide the answer, various piezoelectric PMN-PZT single crystal thin sheets; namely, high-loss PMN-PZT, medium-loss PMN-PZT, and low-loss PMN-PZT with the typical rhombohedral perovskite phase close to the morphotropic phase boundary (MPB), were grown using the solid-state-crystal growth (SSCG) method (see Data S1 in the Supporting information). This greatly improved the desired properties. In this study, we fabricated three MME generators using ME composites with these PMN-PZT single crystalline materials in macro-fibers form, and a magnetostrictive Ni plate. In this paper, the MME generators embedded with high-loss PMN-PZT, medium-loss PMN-PZT, and low-loss PMN-PZT, were identified as highloss, medium-loss, and low-loss (respectively) MME generators. Using them, we eventually succeeded in finding a way to extract significantly improved electric power sufficient to realize a self-powered energy device. Variation in the properties of the piezoelectric PMN-PZT single-crystal macro-fibers (SCMFs) results in a substantial change in the output voltage, the energy harvesting characteristics, and the power density of the device.We are entering an era when electrical energy scavenged from the irregular energy resources that are found ubiquitously in our living environment (e.g., light, vibrations, motion, heat, and magnetic fields) can be used to operate small electronic devices that do extraordinary tasks. [1][2][3][4][5][6][7][8] The needs of th...

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Low‐Loss Piezoelectric Single‐Crystal Fibers for Enhanced Magnetic Energy Harvesting with Magnetoelectric Composite

Annapureddy

Kim

Palneedi

et al. 2016

Advanced Energy Materials

103

View full text Add to dashboard Cite

show abstract

“…So, the electrodes could be directly connected in parallel to enhance the current output. [36][37][38] The wireless Bluetooth pedometer was attached to a pendulum and swung as the pendulum. The short-circuit current reached up to 150 µA when three TENGs were stacked on.…”

Section: Wwwadvmattechnoldementioning

confidence: 99%

Bladeless‐Turbine‐Based Triboelectric Nanogenerator for Fluid Energy Harvesting and Self‐Powered Fluid Gauge

Chen

Tang

Han

et al. 2018

Adv Materials Technologies

View full text Add to dashboard Cite

triboelectrification and electrostatic induction. [2][3][4] It can convert ambient mechanical energy from various sources, such as wind, [5] human body motion, [6] and ocean wave, [7,8] into useful electrical energy. The TENG shows a great potential as self-powered active sensors with applications including wearable electronics, [9,10] infrastructure monitoring, [11] and medical science. [12] There are also the advantages of cost-effective, simple fabrication, and high efficiency.The critical challenge for the practical applications of TENG is relatively low output power, which is determined by the surface charge density and the working frequency. Several methods have been developed to increase the charge density on the dielectric surface, such as corona charging and charge pump. [13][14][15][16][17] However, the surface charge density is limited to a relatively low value because of air breakdown. [18] On the other hand, increasing the working frequency of the TENG is found to be a feasible method for improving the current. [19][20][21][22] As a typical structure, the rotational disk-based TENG has been widely studied. Owing to the nonintermittent and ultrafast rotation-induced charge transfer, it achieves a very high sinusoidal current output performance. Driven by powerful electromotors and complicated gear system, the rotation speed of the TENG reaches several hundred rpm and even 1000 rpm. But it is hard to increase the frequency further, because of the structure and the material strength. [23,24] However, the bladeless turbine is reported to have advantages of very high rotation speed, simple fabrication, easy maintain, as well as wide selection of materials. [25][26][27][28] Here, we combine a bladeless turbine with triboelectric nanogenerator (BT-TENG), which transforms the fluid flow into rotation motion and generates electrical output. It can achieve high rotation speed without electromotors. When blown by compressed air at pressure of 48 kPa, the BT-TENG rotated at ≈7500 rpm, which is about eight times faster than those reported in previous literature. [29,30] Thanks to its high-frequency rotation, the short-circuit current reached 63 µA, and the output power was 3.6 mW. Due to the planar structure of both the turbine and TENG, it is very easy to integrate multiple layer TENG on the whole system. When six TENGs were integrated with the bladeless turbine coaxially, the total short-circuit current was up to 180 µA and the output power increased to 15 mW, which is Triboelectric nanogenerator (TENG) is attractive as an energy harvesting and self-powered sensing technology. The working frequency and surface charge density are the key factors that influence the output performance. To boosting the output of the TENG by improving the working frequency, a bladeless turbine-based triboelectric nanogenerator (BT-TENG) is designed, which transforms the fluid flow into a high rotation motion that drives the rotation TENG. When blown by compressed air, the BT-TENG rotates at an average speed of 7500 rpm. Owing to its...

show abstract

“…Recently, simple, highly efficient, and cost-effective triboelectric generators (TEGs) have been developed6789101112131415161718. Among them, fiber/textile-type TEG19202122232425262728 technologies provide an energy source for self-powered devices, e.g., wearable devices, electronic skin, bio-medical devices, and portable electronics, because of their lightweight, flexibility, and comfort. In principle, triboelectric energy-harvesting technologies operate by contact electrification and electrostatic induction6.…”

mentioning

confidence: 99%

Corrugated Textile based Triboelectric Generator for Wearable Energy Harvesting

Choi

Lee

Park

et al. 2017

Sci Rep

View full text Add to dashboard Cite

Triboelectric energy harvesting has been applied to various fields, from large-scale power generation to small electronics. Triboelectric energy is generated when certain materials come into frictional contact, e.g., static electricity from rubbing a shoe on a carpet. In particular, textile-based triboelectric energy-harvesting technologies are one of the most promising approaches because they are not only flexible, light, and comfortable but also wearable. Most previous textile-based triboelectric generators (TEGs) generate energy by vertically pressing and rubbing something. However, we propose a corrugated textile-based triboelectric generator (CT-TEG) that can generate energy by stretching. Moreover, the CT-TEG is sewn into a corrugated structure that contains an effective air gap without additional spacers. The resulting CT-TEG can generate considerable energy from various deformations, not only by pressing and rubbing but also by stretching. The maximum output performances of the CT-TEG can reach up to 28.13 V and 2.71 μA with stretching and releasing motions. Additionally, we demonstrate the generation of sufficient energy from various activities of a human body to power about 54 LEDs. These results demonstrate the potential application of CT-TEGs for self-powered systems.

show abstract

All-in-one energy harvesting and storage devices

Cited by 251 publications

References 231 publications

Low‐Loss Piezoelectric Single‐Crystal Fibers for Enhanced Magnetic Energy Harvesting with Magnetoelectric Composite

Low‐Loss Piezoelectric Single‐Crystal Fibers for Enhanced Magnetic Energy Harvesting with Magnetoelectric Composite

Bladeless‐Turbine‐Based Triboelectric Nanogenerator for Fluid Energy Harvesting and Self‐Powered Fluid Gauge

Corrugated Textile based Triboelectric Generator for Wearable Energy Harvesting

Contact Info

Product

Resources

About