Enhancing Performance of Triboelectric Nanogenerator by Filling High Dielectric Nanoparticles into Sponge PDMS Film

Chen, Jie; Guo, Hengyu; He, Xianming; Liu, Guanlin; Xi, Yunfei; Shi, Haofei; Hu, Chenguo

doi:10.1021/acsami.5b09907

Cited by 538 publications

(385 citation statements)

References 44 publications

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“…The enhancement in output power due to grafting was analyzed in many ways because there are many factors influencing the output power, such as the surface roughness of the contact layers, the compressibility of the triboelectric materials, the dielectric properties, and the surface potentials ( 16 , 17 , 23 , 31 ). Furthermore, these factors may be interrelated to each other, meaning that the main reason for the enhancement was not easy to find.…”

Section: Resultsmentioning

confidence: 99%

“…However, greater output performance is essential for the implementation of TENG in practical applications. Although various strategies to enhance the output performance have been reported, an effective dielectric for creating the device with high performance should be developed because the output power is critically dependent on the density of the charges transferred ( 16 , 17 ). To date, various dielectric materials, such as polydimethylsiloxane (PDMS) ( 18 ), poly(methyl methacrylate) (PMMA) ( 19 ), polyimide (PI) ( 20 ), polyvinylidene difluoride (PVDF) ( 21 ), and polytetrafluoroethylene (PTFE) ( 22 ), have been used without any modifications, and the resulting electrical signals were extremely weak.…”

Section: Introductionmentioning

confidence: 99%

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Robust nanogenerators based on graft copolymers via control of dielectrics for remarkable output power enhancement

et al. 2017

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Robust nanogenerators based on graft copolymers via control of dielectrics for remarkable output power enhancement

et al. 2017

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“…Both might result in a high surface charge density on the PDMS/GO composite, and low dissipation rate of surface charge. [ 33,34 ] Figure 2 d displayed the surface structure of PDMS/GO coating, which revealed a smooth surface and uniformly dispersed GO nanoparticles in PDMS matrix. The cross-sectional view shown in Figure 2 e revealed that the PDMS/GO coating was well deposited on the surface of the conducting fabric.…”

Section: Methodsmentioning

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

182

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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 ...

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“…[24] Of all the above mentioned methods, the selection of the material is the most effective way to fundamentally improve the performance of the TENG via the increase of the surface charge density, but it is usually confined to some conventional materials from triboelectric series. [25] In addition, for the TENG-based energy harvesting and self-powered applications in open environment, environmental factors, such as humidity, have a great influence on the performance of TENG. [25] In addition, for the TENG-based energy harvesting and self-powered applications in open environment, environmental factors, such as humidity, have a great influence on the performance of TENG.…”

mentioning

confidence: 99%

Humidity‐Resistive Triboelectric Nanogenerator Fabricated Using Metal Organic Framework Composite

Wen

Guo

et al. 2019

Adv Funct Materials

228

181

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(1 of 9)triboelectric nanogenerator (TENG), based on the coupling of triboelectrification and electrostatic induction, [5][6][7][8][9][10] has been proved as a cost-effective, simple, and efficient technique, which can directly convert mechanical energy such as wind flows, ocean waves and human motions into electric energy. [11][12][13][14][15][16][17][18][19][20] Recently, various strategies have been reported to improve the performance of TENG, such as selection of suitable triboelectric materials, [21] charge injection, [22] control of morphology, [23] and structural optimization. [24] Of all the above mentioned methods, the selection of the material is the most effective way to fundamentally improve the performance of the TENG via the increase of the surface charge density, but it is usually confined to some conventional materials from triboelectric series. Hu's group had demonstrated that the output performance has a close relationship with the dielectric constant of the tribomaterial. [25] In addition, for the TENG-based energy harvesting and self-powered applications in open environment, environmental factors, such as humidity, have a great influence on the performance of TENG. [20,26] The output performance of TENG would be drastically degraded by humidity due to formation of a water layer on the surface of the triboelectric materials which deplete the induced charges. Thus, it is still a challenge to design a novel TENG material with excellent performance under varying environments, such as high humidity.Metal organic frameworks (MOFs) are an intriguing class of crystalline materials that comprises inorganic metal ions (components of nodes) and organic ligands (structural linkers) via coordination chemistry. [27,28] Owing to large internal surface areas and extended nanoscale porosity, MOFs have been widely studied as candidate materials for applications in chemical separations, [29] gas storage, [30] catalysis, [31] sensing, [32] and drug delivery. [33] HKUST-1 (Cu 3 (BTC) 2 , (BTC = 1,3,5-benzenetricarboxylate or trimesate)) is a very well-studied and stable MOF, which consists of Cu ions and benzene tricarboxylate (BTC) as a linker. Recently, experimental results have shown that the dielectric property of HKUST-1 film is highly dependent on the relative humidity (RH). [34] Till now, no experimental reports on the triboelectric property based on MOF matericals have been reported yet.In this paper, we designed a novel humidity-resistive TENG based on nanocomposite film made of HKUST-1 and polydimethylsiloxane (PDMS). HKUST-1 has poor conductivity due to the insulating nature of organic ligands along with d-orbital participation of metal ions in coordination bonds With its light weight, low cost, and high efficiency, the triboelectric nanogenerator (TENG) is considered a sustainable and renewable energy source for selfpowered or mobile electronics. However, the performance of TENG is seriously affected by humid environment. Here, for the first time, TENG with improved performance under high humidity is o...

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Enhancing Performance of Triboelectric Nanogenerator by Filling High Dielectric Nanoparticles into Sponge PDMS Film

Cited by 538 publications

References 44 publications

Robust nanogenerators based on graft copolymers via control of dielectrics for remarkable output power enhancement

Robust nanogenerators based on graft copolymers via control of dielectrics for remarkable output power enhancement

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

Humidity‐Resistive Triboelectric Nanogenerator Fabricated Using Metal Organic Framework Composite

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