A new protocol toward high output TENG with polyimide as charge storage layer

Feng, Yange; Zheng, Youbin; Zhang, Ga; Wang, Daoai; Zhou, Feng; Liu, Weimin

doi:10.1016/j.nanoen.2017.06.017

Cited by 136 publications

(85 citation statements)

References 42 publications

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“…However, after introducing a PS dielectric layer between PVDF and the bottom electrode, the decay time of the TENG increased to 44 h. The dramatically enhanced decay time clearly demonstrates that the massive traps in the PS sublayer can powerfully restrain and efficiently store the flowing electrons. Most likely, the polyimide (PI) dielectric layer reported by Feng et al also functioned as a charge storage layer and improved the device outputs by one order of magnitude, as elucidated in Figure d . In this work, the authors also selected PET and paper as the control groups to test charge storage capability.…”

Section: Materials Optimization For High Triboelectric Performancementioning

confidence: 96%

“…In addition to surface engineering, modulating the properties of bulk friction materials to enhance TENG performance has drawn extensive interest from researchers, and the methods for achieving this objective mainly include doping nanomaterials and inserting sublayers . Both of these approaches and their influence on the output performance of TENGs will be presented in this part.…”

Section: Materials Optimization For High Triboelectric Performancementioning

confidence: 99%

Section: Materials Optimization For High Triboelectric Performancementioning

confidence: 99%

See 2 more Smart Citations

Progress in Triboelectric Materials: Toward High Performance and Widespread Applications

Zhu

Wang

et al. 2019

Adv Funct Materials

191

128

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Triboelectric phenomena can be observed everywhere; however, they are consistently omitted from applications. Although almost all substances exhibit a triboelectrification effect in daily life, chemists as well as materials scientists have performed extensive investigations in both the aspects of basic science and practical applications to promote the development of triboelectric nanogenerators (TENGs). Here, a detailed survey of materials engineering for high triboelectric performance and multifunctional materials toward specific applications is summarized, including constructing micro/ nanostructures, chemically modifying the frication surface, modulating bulk friction materials, the mechanism for improved performance, and preparing materials for implantable medical devices, bionic skin, and wearable electronic devices. Moreover, an in depth discussion of the current challenges and future efforts for strengthening the performance of TENGs is elaborated in detail, which will better guide new researchers toward a deeper understanding of and explorations about TENGs.urgently needed to alleviate a more severe energy crisis, which has diverted extensive attention toward renewable energy (solar energy, geothermal energy, etc.) by virtue of its large quantity and ubiquitous existence in our environment. [1][2][3][4][5][6][7][8][9] In addition, the rapid development of science and technology has also suggested higher requirements for energy delivery. In the past few decades, large numbers of mobile communication electronics, smart wearable devices, and internet of things (IoT) devices based on tens of thousands of sensors have appeared in every corner of the globe. These electronic devices are usually characterized by requiring a small amount of power, only on the microwatt or even the milliwatt level, whereas they hold a relatively large shape to facilitate frequent charging or battery replacement for embedded traditional solid-state power sources. It is, therefore, desirable to integrate an energy harvester together with a battery to form a self-powered system that could be recharged by absorbing and transferring external fragmental energy. Furthermore, considering that a majority of these electronic devices are closely contacting the human body, the individualization of the energy-supply mode related to the person itself remains to be studied in depth.To tackle energy shortages and content-specific power supply requirements, researchers have designed a diversity of energyconversion devices derived from assorted working principles to collect energy, such as solar cells, electromagnetic generators, thermoelectric generators, piezoelectric nanogenerators, and triboelectric nanogenerators (TENGs). [10][11][12][13][14][15][16][17][18][19][20][21] Primarily benefiting from their light weight, low cost, multiple structures, extensive material selection, and even great efficiency at low operating frequencies, the novel TENGs have been proven as up-and-coming candidates to complementarily solve the energy-deficiency issue. T...

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Section: Materials Optimization For High Triboelectric Performancementioning

confidence: 96%

Section: Materials Optimization For High Triboelectric Performancementioning

confidence: 99%

See 1 more Smart Citation

Progress in Triboelectric Materials: Toward High Performance and Widespread Applications

Zhu

Wang

et al. 2019

Adv Funct Materials

191

128

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“…行控制. Feng等 [40] 图 6 (a) Pdop-F的合成制备以及修饰过程; (b) PFTS在样品表面的修饰过程; (c) 摩擦起电电压信号; (d) 摩擦起电电荷密度 [40] (网络版彩图) [45] (网络版彩图) 图 7 (a) 多巴胺的修饰对表面润湿性的影响; (b) 多巴胺表面修饰对固液界面摩擦起电电压的影响 [41] (网络版彩图) 图 10 湿度对不同摩擦副表面摩擦电荷的影响 [46] (网络版彩图) (c) 不同湿度下固-液界面摩擦起电电压和(d)固-固界面摩擦起电电压 [47] (网络版彩图) 图 12 温度 [48] (a)、低真空 [49] (b)和高真空(c, d)对摩擦起电的影响(网络版彩图) (e) PVDF和Nylon接触前3 s的电荷积累测试 [50] (网络版彩图)…”

Section: 的组分会发生变化从而能够对材料摩擦起电性能进unclassified

Investigation on the interface control and utilization oftriboelectrification

Zheng

Feng

et al. 2018

Sci. Sin.-Chim

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Triboelectrification is one of the most common effects in our daily life. When two materials come into frictional contact, they become electrically charged through triboelectric charging. Static electricity generated by triboelectrification, which has proven useful in many areas such as xerography, electrostatic air cleaning and electrostatic painting, on the other hand, can generate electric discharge, which is a hidden danger for petroleum transport and industrial production and may result in heavy casualties and economic losses. It is very important to reveal the mechanism of triboelectric charge generation and realize effective control of triboelectric charge quantity at the interface. Here we summarize the recent progress in the studies of interface control and utilization of triboelectrification. The challenge and prospective investigation trends of interface control and utilization of triboelectrification are also proposed and discussed.

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“…[15][16][17][18] Strategies to enhance the output performance of TENGs are generally based on increasing of the transferred charge density between two contacted surfaces, as the electric potential is critically dependent on it. [19][20][21][22] Although the principle of contact-electrification has long been studied, [23][24][25] but whose mechanisms are still unclear. Recently, surface-states and electron cloud/potential models have been employed to explain the contact electrification mechanism.…”

mentioning

confidence: 99%

High‐Output Triboelectric Nanogenerator Based on Dual Inductive and Resonance Effects‐Controlled Highly Transparent Polyimide for Self‐Powered Sensor Network Systems

Lee

Jung

Lee

et al. 2019

Advanced Energy Materials

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Internet of things (IoT), has triggered considerable interest in triboelectric nanogenerators (TENGs) as renewable and sustainable power sources, [1][2][3][4] owing to their high output power, [5,6] cost-effectiveness, [7] and high energy conversion efficiency. [8][9][10] The wide-availability and high functionality of TENGs offers itself to several practical applications. [11][12][13][14] Crucial to the successful implementation of TENGs in practical applications is to generate sufficient output power, usually stored in a capacitor or a battery, to operate the devices. [15][16][17][18] Strategies to enhance the output performance of TENGs are generally based on increasing of the transferred charge density between two contacted surfaces, as the electric potential is critically dependent on it. [19][20][21][22] Although the principle of contact-electrification has long been studied, [23][24][25] but whose mechanisms are still unclear. Recently, surface-states and electron cloud/potential models have been employed to explain the contact electrification mechanism. However, these models are limited to metal-semiconductors and metal-insulators, i.e., they may be not currently compatible with metal-polymers. [26,27] Other strategies have relied on the choice of materials in the triboelectric series with electronic and structural modifications, [28] such as a large work-function difference, [29,30] high porosity, [31,32] large dielectric constant, [33][34][35] and large surface roughness. [36][37][38] The maximum charge density of these TENGs in practical environments, however, requires additional processes, such as charges injection and poling process under high electric field. [35,[39][40][41] In particular, the injection process was quite efficient in increasing the charge density because it was considered to be limited by air breakdown. [38] Actually, the dielectric strengths of the polymers are larger than that of the air. The charge density was reached to 260 and 283 µC m −2 in TENGs with single-layered film and multilayered film, respectively. [40,41] Recently, several modifications to amplify the current flowing through the external circuit have been successfully demonstrated. [6,20,42] Metal-dielectric-metal structures or metal-metal contacts have been introduced, proven to increase the charge density of the TENG by several times.Since TENGs are driven by vibrations in the environment and human kinetics, the frequencies of the mechanical forces High-output triboelectric nanogenerators (TENGs) are demonstrated based on polyimide (PI)-based polymers by introducing functionalities (e.g., electronwithdrawing and electron-donating groups) into the backbone. The TENG based on 6FDA-APS PI, possessing the most negative electrostatic potential and the low-lying lowest unoccupied molecular orbital level, produces the highest effective charge density of about 860 µC m −2 in practical working conditions with the ion injection process. This may be ascribed to the excellent charge-retention characteristics as well as the enh...

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A new protocol toward high output TENG with polyimide as charge storage layer

Cited by 136 publications

References 42 publications

Progress in Triboelectric Materials: Toward High Performance and Widespread Applications

Progress in Triboelectric Materials: Toward High Performance and Widespread Applications

Investigation on the interface control and utilization oftriboelectrification

High‐Output Triboelectric Nanogenerator Based on Dual Inductive and Resonance Effects‐Controlled Highly Transparent Polyimide for Self‐Powered Sensor Network Systems

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