A simple and low-cost triboelectric nanogenerator based on two dimensional ZnO nanosheets and its application in portable electronics

Supraja, P.; Kumar, Rajeev; Mishra, Siju; Haranath, D.; Sankar, Raman; Prakash, K.; Jayarambabu, N.; Rao, T. Venkatappa; Kumar, K. Uday

doi:10.1016/j.sna.2022.113368

Cited by 50 publications

(28 citation statements)

References 56 publications

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“…The V o and I s of the TENG device are ∼150 V and ∼34.5 μA, respectively. The observed values are significantly higher than the previously reported values for the ZnO-PET-based TENG by our group . This enhancement is due to the pre-charged nature of the OHP sheets compared to the normal PET sheets.…”

Section: Resultscontrasting

confidence: 72%

“…The observed values are significantly higher than the previously reported values for the ZnO-PET-based TENG by our group. 42 This enhancement is due to the pre-charged nature of the OHP sheets compared to the normal PET sheets. We have verified the V o and I s of the six TENG devices fabricated under identical conditions and found the same response.…”

Section: Resultsmentioning

confidence: 99%

“…The simple and low-cost hot plate-assisted hydrothermal method was adopted to obtain ZnO nanosheets, similar to our previous reports. , First, the ZnO precursor solution was prepared by dissolving a 1:1 ratio of zinc nitrate hexahydrate and HMTA precursors in 100 mL of DI water. A clean aluminum substrate (6 cm × 6 cm) was kept vertically in the growth solution beaker and placed on a hot plate for 4 h at 85 °C growth solution temperature.…”

Section: Methodsmentioning

confidence: 99%

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High-Performance and Low-Cost Overhead Projector Sheet-Based Triboelectric Nanogenerator for Self-Powered Cholesteric Liquid Crystal, Electroluminescence, and Portable Electronic Devices

Potu

Navaneeth

Rajaboina

et al. 2022

ACS Appl. Energy Mater.

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Low output power, intricate device designs, limitation on scalability, limited production capability, and higher fabrication cost are the major hurdles to use triboelectric nanogenerators (TENGs) as a power source in self-powered device applications. This work reports a highperformance, simple design, and inexpensive TENG using overhead projector (OHP) sheets and ZnO nanosheet array films. The fabricated TENG produced a maximum output voltage, current, and power density of ∼292 V, ∼55 μA, and ∼424.8 mW/m 2 for each hand slapping force, respectively. The charged nature of one side of the OHP sheet is responsible for obtaining the high-power density reported in this communication. Further, the TENG has shown excellent stability over a period of 6 months and more than 10,000 test cycles. The stability of ZnO nanosheets is excellent even the after 10,000 test cycles. The TENG's AC output is utilized to control the optical characteristics of the cholesteric liquid crystal (CLC) devices. CLC devices are demonstrated for mobile security, optical switch, webcam security, and self-powered smart windows or e-paper displays. Further, we have demonstrated self-powered electroluminescence and portable electronic devices. The current work has potential applications in portable, wearable, and self-powered electronic devices due to its high power density, simple design, minimal cost, and scalability.

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Section: Resultscontrasting

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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High-Performance and Low-Cost Overhead Projector Sheet-Based Triboelectric Nanogenerator for Self-Powered Cholesteric Liquid Crystal, Electroluminescence, and Portable Electronic Devices

Potu

Navaneeth

Rajaboina

et al. 2022

ACS Appl. Energy Mater.

Self Cite

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“…[19][20][21][22][23] To date, various morphologies of ZnO have been incorporated into polymer-based H-P/TENGs for enhanced power outputs. These include ZnS/ZnO nanoflakes in PDMS, [24] ZnO nanorods@conductive black nanocomposite coated with nickel foam, [16] ZnO nanosheets on aluminium substrate, [25] and ZnO nanowires in nylon. [26] Although different ZnO nanostructures have been utilized in H-P/TENGs, there is a lacking of in-depth studies regarding the relationship between the ZnO growth structures and the output performances of H-P/TENGs, which needs to be clarified and optimized.…”

Section: Introductionmentioning

confidence: 99%

Modulating ZnO Growth Structures for Maximum Power Output of Hybrid Piezo/Triboelectric Nanogenerator

Lim

Koay

Zhao

et al. 2022

Adv Funct Materials

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Hybrid piezo/triboelectric nanogenerators (H-P/TENGs) are developed to compensate the drawbacks of a single nanogenerator by synergizing high triboelectric output voltage and piezoelectric output current in continuous contact-separation cycles. In particular, piezoelectric zinc oxide (ZnO) has been widely used due to its excellent orientation along the c-axis and tunable growth structures. Herein, various growth structures of ZnO, unoriented, oriented, and hierarchical structures, are incorporated in H-P/TENGs, enhancing their power densities from 6 to 17 times. Particularly, oriented ZnO nanorod/ PVA (ZnR) achieves a maximum power density of 15.9 W m −2 (≈17-fold increment compared to pristine PVA). The highly oriented ZnO growth along the c-axis enables large deformation upon a vertical compression, subsequently generating a large piezoelectric polarization. Moreover, the enhancement mechanism via piezoelectric polarization is elucidated using a modified overlapped electron cloud model supported with Kelvin probe force microscopy measurements. The polarization of ZnO nanocomposites enlarges the difference in the highest electron energies (ΔE) between the two triboelectric layers, driving more electrons to transfer during contact electrification, thereby enriching their surface charge densities. This study highlights the significance of growth structure control in maximizing the piezoelectric responses of ZnO, consequently improving the output performances of H-P/TENGs.

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“…Owing to their properties like simplicity, low cost, light weight, and high performance, − TENGs not only have demonstrated great potential as a sustainable power source in various smart, flexible, and wearable electronic systems but also are instrumental in several applications like self-powered motion sensors, , voice sensors, blue energy, − wind energy harvesting, − health monitoring, − human–machine interaction, , and smart cities . Roots of their versatility lie in their uncomplicated structure , and vast range of tribomaterials with varying degrees of electropositivity/negativity . Widely studied tribopositive materials include nylon, dry skin, silk, and aluminum, whereas the most researched tribonegative materials include elastomers like PDMS and PU, and polymers like PTFE, PVDF, and polyimide .…”

Section: Introductionmentioning

confidence: 99%

Polystyrene-Based Triboelectric Nanogenerators for Self-Powered Multifunctional Human Activity Monitoring

Mudgal

Tiwari

Bharti

2022

ACS Appl. Energy Mater.

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Polystyrene (PS)-based triboelectric nanogenerators (PS-TENGs) with PS as the primary friction layer have been reported. PS-TENGs were developed by a simple drop-cast method and arranged in vertical contact-separation mode with aluminum as the other triboelectric layer. The PS-TENG (area: ∼15 cm 2 ) prepared with 40 mg/mL PS solution generated an open-circuit voltage of ∼140 V, short-circuit current of ∼6 μA, and instantaneous power of ∼120 μW (power density of ∼80 mW/m 2 ) when subjected to a force of ∼12 N. The PS-TENG also powered 120 green light-emitting diodes and low-power electronic systems like a calculator and digital clock. The PS-TENG was further explored as a self-powered human motion monitoring device where it effectively detected trivial human motions like hand tapping, walking, running, jumping, and various joint movements. In addition, small-scale motions like that of fingers and coughing impulses and throat-clearing vibrations in the throat, nasal breath, and mouth air blows were also precisely captured by the PS-TENG. These results signified huge capabilities of PS as a triboelectric material, which remains widely unexplored despite its suitable position in the triboelectric series.

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A simple and low-cost triboelectric nanogenerator based on two dimensional ZnO nanosheets and its application in portable electronics

Cited by 50 publications

References 56 publications

High-Performance and Low-Cost Overhead Projector Sheet-Based Triboelectric Nanogenerator for Self-Powered Cholesteric Liquid Crystal, Electroluminescence, and Portable Electronic Devices

High-Performance and Low-Cost Overhead Projector Sheet-Based Triboelectric Nanogenerator for Self-Powered Cholesteric Liquid Crystal, Electroluminescence, and Portable Electronic Devices

Modulating ZnO Growth Structures for Maximum Power Output of Hybrid Piezo/Triboelectric Nanogenerator

Polystyrene-Based Triboelectric Nanogenerators for Self-Powered Multifunctional Human Activity Monitoring

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