Multifunctional triboelectric nanogenerator based on porous micro-nickel foam to harvest mechanical energy

Zhang, Lei; Jin, Long; Zhang, Binbin; Deng, Weili; Pan, Hong; Tang, Junfeng; Zhu, Minhao; Yang, Weiqing

doi:10.1016/j.nanoen.2015.06.012

Cited by 96 publications

(58 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They generate positive and negative charges on two dissimilar surfaces when the two layers contact and separate each other. Various types materials are deployed as dissimilar surfaces such as Polydimethylsiloxance (PDMS)1718, Kapton19, ethylene-vinyl acetate copolymer (EVA)20, Polyethylene terephthalate (PET)21, Perfluoroalkoxy (PFA)22, Nylon23, Polyvinylchloride24, Polytetrafluoroethylene (PTFE)252627282930 and metal materials31. According to the triboelectric series, the larger affinity difference between two different materials contributes to the higher output performance32.…”

mentioning

confidence: 99%

A flexible triboelectric-piezoelectric hybrid nanogenerator based on P(VDF-TrFE) nanofibers and PDMS/MWCNT for wearable devices

Wang

Yang

Liu

et al. 2016

Sci Rep

202

119

View full text Add to dashboard Cite

This paper studied and realized a flexible nanogenerator based on P(VDF-TrFE) nanofibers and PDMS/MWCNT thin composite membrane, which worked under triboelectric and piezoelectric hybrid mechanisms. The P(VDF-TrFE) nanofibers as a piezoelectric functional layer and a triboelectric friction layer are formed by electrospinning process. In order to improve the performance of triboelectric nanogenerator, the multiwall carbon nanotubes (MWCNT) is doped into PDMS patterned films as the other flexible friction layer to increase the initial capacitance. The flexible nanogenerator is fabricated by low cost MEMS processes. Its output performance is characterized in detail and structural optimization is performed. The device’s output peak-peak voltage, power and power density under triboelectric mechanism are 25 V, 98.56 μW and 1.98 mW/cm3 under the pressure force of 5 N, respectively. The output peak-peak voltage, power and power density under piezoelectric working principle are 2.5 V, 9.74 μW, and 0.689 mW/cm3 under the same condition, respectively. We believe that the proposed flexible, biocompatible, lightweight, low cost nanogenerator will supply effective power energy sustainably for wearable devices in practical applications.

show abstract

mentioning

confidence: 99%

A flexible triboelectric-piezoelectric hybrid nanogenerator based on P(VDF-TrFE) nanofibers and PDMS/MWCNT for wearable devices

Wang

Yang

Liu

et al. 2016

Sci Rep

202

119

View full text Add to dashboard Cite

show abstract

“…[6][7][8][9][10][11][12][13][14][15][16][17][18] To improve the performance and broaden the applications of TENGs, numerous efforts have been made with focus on both enhancement of the surface charge density and development of new structures/modes. [ 2,4,7,9,13,[19][20][21][22][23][24][25] So far, the electric power output of TENGs has been improved up to ≈500 W m −2 by sophisticated design of device structure. [ 18,[26][27][28] Demonstrated TENGs have been working in four modes, that is, the contact-separation or contact mode in short, sliding mode, single-electrode mode, and free-standing triboelectric-layer mode.…”

mentioning

confidence: 99%

A Fully Verified Theoretical Analysis of Contact‐Mode Triboelectric Nanogenerators as a Wearable Power Source

Bao

Zeng

Peng

et al. 2016

Advanced Energy Materials

178

View full text Add to dashboard Cite

cost, environmental friendliness, and universal availability. [6][7][8][9][10][11][12][13][14][15][16][17][18] To improve the performance and broaden the applications of TENGs, numerous efforts have been made with focus on both enhancement of the surface charge density and development of new structures/modes. [ 2,4,7,9,13,[19][20][21][22][23][24][25] So far, the electric power output of TENGs has been improved up to ≈500 W m −2 by sophisticated design of device structure. [ 18,[26][27][28] Demonstrated TENGs have been working in four modes, that is, the contact-separation or contact mode in short, sliding mode, single-electrode mode, and free-standing triboelectric-layer mode. The performance of the TENGs in contact-mode is better than that of TENGs in the sliding mode, because a much higher maximum displacement of TENGs in the sliding mode is required than that of TENGs working in the contact-mode, in order to achieve the same level of open circuit voltage. [ 29 ] The TENGs working in the contact-mode are particularly interesting for applications like foot-mounted wearable electronic systems because of the short vertical displacement involved and ease of integration.The fundamental principle of TENGs is based on the coupled effects of triboelectrifi cation and electrostatic induction. A theoretical model has been proposed for the TENGs working in the contact mode by Wang and co-workers. By utilizing the derived governing equation, the real-time output characteristics and the relationship between the optimum external resistance and TENG para meters were numerically simulated. [ 30 ] However, the model was not validated by corresponding experiments with measured real-time output characteristics. Furthermore, it is known that the real-time output characteristics would be affected by the materials, device structural parameters, operation conditions, and equivalent resistance. Assumptions made on simple profi les of working velocity may infl uence the model's validity in real situations. For instance, during real human walking, the previous wearing trials of an intelligent footwear system illustrated that the velocity profi le was complex and varied signifi cantly with time for a foot-mounted device. [ 31,32 ] Therefore, it is highly desirable to develop a theoretical model that is fully verifi ed by corresponding experiments. Such an experimentally verifi ed model is essential for designing and optimizing TENGs for intended applications.In this paper, based on conservation of charges and zerovoltage for close-loop circuits, a theoretical model is presented Harvesting mechanical energy from human activities by triboelectric nanogenerators (TENGs) is an effective approach for sustainable, maintenance-free, and green power source for wireless, portable, and wearable electronics. A theoretical model for contact-mode triboelectric nanogenerators based on the principles of charge conservation and zero loop-voltage is illustrated. Explicit expressions for the output current, voltage, and power are presented for the TENGs ...

show abstract

“…ii) The performance of TENG for harvesting vibrational energy of human footfall. a) Open‐circuit voltage and b) short circuit current of TENG at footfall force of 500 N. Reproduced with permission . Copyright (2015), Elsevier.…”

Section: Modes Of Operationmentioning

confidence: 99%

“…[35] Copyright (2016), Elsevier;( vi)Reproduced with permission. [27] Copyright (2015), Elsevier;( vii)Reproduced with permission. [25] Copyright( 2015), Nature Publishing Group;( viii)Reproducedw ith permission.…”

Section: Key Challengesmentioning

confidence: 99%

Triboelectric Nanogenerators for Mechanical Energy Harvesting

Kaur

Pal

2018

Energy Tech

View full text Add to dashboard Cite

Energy is the essential requirement of daily life. Due to the diminution of the energy sources, it is necessary develop devices that can harvest the wasted energy that exists in the ambient environment. To address this, triboelectric nanogenerators (TENGs) have been developed as an innovative paradigm for energy harvesting. They can harvest the various forms of mechanical energy, including vibrations, walking, ocean waves, human motion, rain drops, flowing water, the motion of an automobile, wind, rotational energy, and mechanical triggering. TENGs can combine the contact electrification and electrostatic induction for energy conversion and operate on four fundamental modes for conversion of mechanical energy into electrical energy to power small‐scale electronics including mobile phones and sensors. The electrical outputs obtained from TENGs depend on the friction of materials that are selected from the triboelectric series on the basis of their electronegativity and electropositivity. Here, a comprehensive overview of the fundamentals of nanogenerators, various operating modes of TENGs and the design of devices that include them, and the performance improvement of this recently emerged technology is presented.

show abstract

Multifunctional triboelectric nanogenerator based on porous micro-nickel foam to harvest mechanical energy

Cited by 96 publications

References 43 publications

A flexible triboelectric-piezoelectric hybrid nanogenerator based on P(VDF-TrFE) nanofibers and PDMS/MWCNT for wearable devices

A flexible triboelectric-piezoelectric hybrid nanogenerator based on P(VDF-TrFE) nanofibers and PDMS/MWCNT for wearable devices

A Fully Verified Theoretical Analysis of Contact‐Mode Triboelectric Nanogenerators as a Wearable Power Source

Triboelectric Nanogenerators for Mechanical Energy Harvesting

Contact Info

Product

Resources

About