Self-powered wireless smart sensor based on maglev porous nanogenerator for train monitoring system

Jin, Long; Deng, Weili; Su, Yu-Chen; Xu, Zhong; Meng, Huan; Wang, Bin; Zhang, Hepeng; Zhang, Binbin; Zhang, Lei; Xiao, Xinbiao; Zhu, Minhao; Yang, Weiqing

doi:10.1016/j.nanoen.2017.05.018

Cited by 170 publications

(77 citation statements)

References 52 publications

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“…[1][2][3][4][5] During last 5-7 years, we witnessed the rapid improvement of unconventional supercapacitors including high-performance (especially the areal and volumetric properties) supercapacitors, [6][7][8][9] novel structured micro-supercapacitors, [10][11][12] ultrathin and transparent devices, [13,14] flexible all-solid-state supercapacitors, [15][16][17][18][19] and on-chip and large-scale integrated micro-supercapacitors. [1][2][3][4][5] During last 5-7 years, we witnessed the rapid improvement of unconventional supercapacitors including high-performance (especially the areal and volumetric properties) supercapacitors, [6][7][8][9] novel structured micro-supercapacitors, [10][11][12] ultrathin and transparent devices, [13,14] flexible all-solid-state supercapacitors, [15][16][17][18][19] and on-chip and large-scale integrated micro-supercapacitors.…”

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confidence: 99%

Extraordinary Areal and Volumetric Performance of Flexible Solid‐State Micro‐Supercapacitors Based on Highly Conductive Freestanding Ti₃C₂T_x Films

Huang

Zhang

et al. 2018

Adv Elect Materials

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108

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as well as light-weight, remarkable flexibility, and security. [1][2][3][4][5] During last 5-7 years, we witnessed the rapid improvement of unconventional supercapacitors including high-performance (especially the areal and volumetric properties) supercapacitors, [6][7][8][9] novel structured micro-supercapacitors, [10][11][12] ultrathin and transparent devices, [13,14] flexible all-solid-state supercapacitors, [15][16][17][18][19] and on-chip and large-scale integrated micro-supercapacitors. [20][21][22] Although these breakthroughs were made, development of MSCs is still in its infancy. And lots of importance and challenges such as 3D architecture design, highconductive leakage-free electrolytes, low self-discharge effect, large-scale on-chip integration at microscale, high mechanical reliability, and outstanding performances in areal and volumetric need to be further addressed. Similar to conventional supercapacitors with inflexibility and liquid electrolytes, the intrinsic properties of the electrode materials, which are critical to high-performance supercapacitors and the method of electrode fabrication, evidently play the most important role in developing state-of-the-art MSCs. In this respect, it is the key to find one material that possesses both outstanding mechanical flexibility and electrochemical performance.MXenes, one kind of novel 2D materials, are promising candidates for developing state-of-the-art MSCs because of their outstanding electrical conductivity, superior areal and Approaching state-of-the-art areal and volumetric capacitances while maintaining high-power characteristic is a big challenge that promotes practical application of flexible solid-state micro-supercapacitors (MSCs), which have recently attracted great attention with the rapid development of flexible microelectronics. Herein, it is reported that freestanding extrahigh conductive Ti 3 C 2 T x (MXene) films with excellent flexibility and effectively controlled thickness ranging from 1-21 µm performed as excellently scalable and flexible solid-state MSCs owing to their ultrahigh underlying electrical conductivity (up to 1.25 × 10 5 S m −1 ) and self-functionalized surfaces (O, OH, and F terminations). Amazingly, freestanding conductive Ti 3 C 2 T x based flexible solid-state MSCs with interdigital electrodes and polyvinyl alcohol/sulfuric acid (PVA/H 2 SO 4 ) gel electrolyte display outstanding areal capacitances of 340 mF cm −2 at 0.25 mA cm −2 based on the two working electrodes. Moreover, the maximum corresponding volumetric capacitance and energy density of flexible solid-state MSCs reach up to 183 F cm −3 and 12.4 mWh cm −3 , which is on the topmost level among all the unconventional supercapacitors to date. Compared with materials currently used in MSCs, this freestanding conductive Ti 3 C 2 T x shows potential and scalability in increasing overall

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mentioning

confidence: 99%

Extraordinary Areal and Volumetric Performance of Flexible Solid‐State Micro‐Supercapacitors Based on Highly Conductive Freestanding Ti₃C₂T_x Films

Huang

Zhang

et al. 2018

Adv Elect Materials

Self Cite

108

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“…However, PENGs, with relatively lower output, are fabricated by using piezoelectric materials which are synthesized through a series of complex procedures, making the device construction low cost‐effective. In addition, the EMG is subject to its size, resulting in a quite low output voltage with a relatively high current when the device size is limited, while the TENG is characterized of a high voltage but low current compared to the EMG . Accordingly, the hybridization of multiple energy‐harvesting techniques is a necessary and promising approach to achieving harvesting mechanical energy efficiently.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the EMG is subject to its size, resulting in a quite low output voltage with a relatively high current when the device size is limited, 32,33 while the TENG is characterized of a high voltage but low current compared to the EMG. 34,35 Accordingly, the hybridization of multiple energy-harvesting techniques is a necessary and promising approach to achieving harvesting mechanical energy efficiently. Although some hybrid energy devices have been invented, [36][37][38][39][40] the accessibility and practicability still need to be improved.…”

Section: Introductionmentioning

confidence: 99%

Building self‐powered emergency electronics based on hybrid nanogenerators for field survival/rescue

Cui

Cao

Guo

et al. 2019

Energy Science & Engineering

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Harvesting energy from human body in multiple ways is pivotal for achieving powering emergency electronics effectively. Herein, we report a hybrid nanogenerator that is based on the coupling of a triboelectric nanogenerator (TENG) and electromagnetic generator (EMG). By utilizing a copper coil in multiroles, the energy grabbing units can operate independently without interfering, revealing a superior performance in scavenging biomechanical energy from human motions. The hybrid device by encapsulation exhibits an excellent environmental stability. When wearing the fabricated device, the TENG and EMG can generate the output voltage about 4 and 1.5 V, respectively, which can be directly stored into a capacitor. By integrating with a battery, the established self‐powered device can actively provide a geographic coordinate in real time in the wild where there is no power supply or network connectivity. Our work paves a way for the further exploration based on hybrid nanogenerators in self‐powered wearable/portable emergency electronics that can be applied in exploration, travel, work, as well as rescue in the wild without power apply and Internet.

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“…In the last five years, triboelectric nanogenerators (TENGs) are gaining a lot of popularity within the scientific community, which results in a considerable amount of research on the potential of triboelectric nanogenerators as energy harvesters [10][11][12][13] and self-powered active sensors for vibrations [14,15], accelerations [16,17], touches [18,19], pressures [20][21][22][23], magnetic fields [24,25], and environmental changes [26,27]. However, until now, there are almost no works to report about the potential of triboelectric nanogenerators for detection and evaluation of impacts [28].…”

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confidence: 99%

Real-time diagnosis of small energy impacts using a triboelectric nanosensor

Garcia

Trendafilova

2019

Sensors and Actuators A: Physical

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Recently, triboelectric nanogenerators (TENGs) are generating increasing interest due to their important applications as energy harvesters and self-powered active sensors for pressures, vibrations and other mechanical motions. However, there is still little research within the research community on their potential as selfpowered impact sensors. This paper considers the development of a novel triboelectric nanogenerator, which is prepared using a simple and economic fabrication process based on electrospinning. Furthermore, the paper studies the changes in the generated electric response caused by small energy impacts. For the purpose, the TENG electric outputs generated by the impact of a free-falling ball dropped from different heights are investigated. The idea is to investigate the relation between the electric responses of the nanogenerator and the energy of the impact.The experimental results demonstrate that the voltage and current outputs increase linearly with the increase of the impact energy. Moreover, the electric responses of the triboelectric nanogenerator show a very high sensitivity (14 V/J) to the changes in the impact energy and good repeatability. The main achievements of this paper are in the development of novel triboelectric nanogenerator composed of polyvinylidene fluoride nanofibers and a thin film of polypropylene, and its successful application as an impact sensor for real-time assessment of small energy impacts. 2 1 Introduction An impact sensor plays a critical role in vehicle safety, fast medical assistance of elderlies and structural health monitoring. For example, in the event of a car crash an impact sensor detects the collision to release an air-bag for the protection of the passengers. In the case of falls in the elderly, an impact sensor can be used to inform about the accident and provide a fast-medical assistance. Other practical examples could be detection of impacts in hail storms, where impacts are responsible for a considerable number of accidents in aircrafts, wind turbines and other civil infrastructures. Therefore, the sensing and the quantification of impacts is of vital importance for a number of applications as impacts can seriously affect the health and safety of humans. Recently, various approaches have been developed and applied for detection and measurement of impacts in environment as for example piezoelectric sensors [1, 2], capacitive sensors [3], optical sensors [4], acoustic sensors [5] and vibration sensors [6]. Special attention deserves the works of Yang's group [7, 8] which investigates the applications of flexible piezoelectric sensors for detection and measurement of pressures, which can be used for important applications as sleeping monitoring, tactile measurements, or sensing of human heartbeats. Additionally, other authors as [9]investigated the potential of piezoelectric nanogenerators as acceleration sensors for real-time collision monitoring, which has important applications as vehicle safety monitoring. However, most of these technologies require...

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Self-powered wireless smart sensor based on maglev porous nanogenerator for train monitoring system

Cited by 170 publications

References 52 publications

Extraordinary Areal and Volumetric Performance of Flexible Solid‐State Micro‐Supercapacitors Based on Highly Conductive Freestanding Ti₃C₂T_x Films

Extraordinary Areal and Volumetric Performance of Flexible Solid‐State Micro‐Supercapacitors Based on Highly Conductive Freestanding Ti₃C₂T_x Films

Building self‐powered emergency electronics based on hybrid nanogenerators for field survival/rescue

Real-time diagnosis of small energy impacts using a triboelectric nanosensor

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Self-powered wireless smart sensor based on maglev porous nanogenerator for train monitoring system

Cited by 170 publications

References 52 publications

Extraordinary Areal and Volumetric Performance of Flexible Solid‐State Micro‐Supercapacitors Based on Highly Conductive Freestanding Ti3C2Tx Films

Extraordinary Areal and Volumetric Performance of Flexible Solid‐State Micro‐Supercapacitors Based on Highly Conductive Freestanding Ti3C2Tx Films

Building self‐powered emergency electronics based on hybrid nanogenerators for field survival/rescue

Real-time diagnosis of small energy impacts using a triboelectric nanosensor

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Extraordinary Areal and Volumetric Performance of Flexible Solid‐State Micro‐Supercapacitors Based on Highly Conductive Freestanding Ti₃C₂T_x Films

Extraordinary Areal and Volumetric Performance of Flexible Solid‐State Micro‐Supercapacitors Based on Highly Conductive Freestanding Ti₃C₂T_x Films