The Experts below are selected from a list of 148200 Experts worldwide ranked by ideXlab platform
Zhong Lin Wang - One of the best experts on this subject based on the ideXlab platform.
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spherical triboelectric nanogenerator based on spring assisted swing structure for effective Water Wave energy harvesting
Nano Energy, 2021Co-Authors: Xi Liang, Tao Jiang, Yawei Feng, Zhirong Liu, Jiajia Han, Pengfei Chen, Zhong Lin WangAbstract:Abstract Ocean Wave energy is one of the most promising clean and renewable energy sources, so developing effective methods to collect such ‘random’ and ultra-low frequency energy is indispensable. The invention of triboelectric nanogenerators (TENGs) provides new prospects for large-scale blue energy harvesting. In this work, a new spherical TENG based on the coupling of spring-assisted structure and swing structure, integrated with a charge excitation circuit (CEC), was constructed to scavenge Water Wave energy. The particular structure can transform low-frequency Water Wave vibrations to high-frequency motions, elevating the frequencies of electrical outputs. Moreover, a TENG array consisting of four TENGs with CECs was fabricated, exhibiting a maximum output power of 16.6 mW and a 205 times enhanced output current of 23.3 mA. The charge excitation TENG array was demonstrated to successfully power a digital thermometer and a wireless signal transmission and reception system without any external power supply. Our study not only provides a new type of TENG with improved performance, but also offers a strategy for constructing maritime internet of things (IoTs) system.
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cylindrical triboelectric nanogenerator based on swing structure for efficient harvesting of ultra low frequency Water Wave energy
Applied physics reviews, 2020Co-Authors: Yawei Feng, Tao Jiang, Zhong Lin Wang, Xi LiangAbstract:Ocean Wave energy is a promising energy source for large-scale exploitation owing to its abundant reserve and renewability. An effort is underway to develop a generator that can adapt to the ultra-low frequency of ocean Wave vibration. Here, we designed a cylindrical triboelectric nanogenerator with an internal swing structure for effective Water Wave energy harvesting. Based on the supporting effect of the bearing component, the rotary dielectric films can be suspended over the stator electrodes, rather than coming into direct contact with them. Benefiting from the largely reduced resistance and continuous swing of an internal rotary component, the fabricated triboelectric nanogenerator can operate for about 85 s and produce over one thousand current pulses after one Water Wave excitation. Being agitated by a 0.033 Hz Water Wave (during a period of 30 s), the optimized cylindrical triboelectric nanogenerator can produce a peak power density of 231.6 mW·m−3 and an average one of 39.8 mW·m−3. Successful demonstrations of powering portable electronic devices and iron material corrosion inhibition under such simulated excitation indicate the robust capability for ultra-low-frequency Water Wave energy conversion. This triboelectric nanogenerator offers a new vision for efficient ultra-low-frequency Wave energy harvesting with the possibility of large-scale blue energy.
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spherical triboelectric nanogenerator integrated with power management module for harvesting multidirectional Water Wave energy
Energy and Environmental Science, 2020Co-Authors: Xi Liang, Tao Jiang, Guoxu Liu, Yawei Feng, Zhong Lin WangAbstract:With the increasing deterioration of the natural environment, exploiting clean and renewable energy has become the top priority of scientific research today. One of the most prospective routes is to harvest Water Wave energy using triboelectric nanogenerator (TENG). In this work, a spherical TENG based on spring-assisted multilayered structure was fabricated to collect multidirectional Water Wave energy, and a power management module (PMM) was integrated to manage the output energy. The output performance of the TENG device was found to be controlled by the Water Wave frequency, amplitude, and orientation angle between the triggering direction and middle plane. Furthermore, with the PMM, the spherical TENG could output a steady direct current (DC) voltage on a resistance, and the charging speed to a supercapacitor was improved by 100 times. The power-managed performance of the whole TENG was also influenced by the circuit connection configurations among multilayered TENGs. A digital thermometer and a Water level detection/alarm system were successfully driven by the power-managed TENG as the demonstrated applications. This work not only provides a type of spherical TENG capable of harvesting multidirectional Water Wave energy, but also effectively manages the output energy for practical applications toward blue energy. Our study demonstrates a typical example of how to build a self-charging power pack that can effectively use random energy in a regulated manner.
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stacked pendulum structured triboelectric nanogenerators for effectively harvesting low frequency Water Wave energy
Nano Energy, 2019Co-Authors: Wei Zhong, Ding Li, Haiming Wang, Liang Xu, Zhong Lin WangAbstract:Abstract The invention of triboelectric nanogenerators (TENGs) provides an effective approach for harvesting Water Wave energy that is clean and renewable. Here, stacked pendulum-structured triboelectric nanogenerators for harvesting low-frequency Water Wave energy is proposed. The device works based on a pendulum-like principle through a compact disk-track structure that enables area contact instead of point contact while maintaining the susceptible rolling motion. Thus the tribo-electrification and the output are greatly enhanced in slow Water Waves. While only considering the volume of the TENG units, charge output density of 4622 μC m−3 can be achieved, which is more than 13.2 times of a typical ball-shell structured device. A peak power density of 14.71 W m−3 and an average power density of 1.05 W m−3 are obtained in low-frequency Water Waves below 0.5 Hz. The device shows great potential of the rolling area-contact design to enhance the output of TENG-based Wave energy harvester with excellent low-frequency performance, which is crucial to the development of TENGs for effectively exploiting abundant Water Wave energy.
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macroscopic self assembly network of encapsulated high performance triboelectric nanogenerators for Water Wave energy harvesting
Nano Energy, 2019Co-Authors: Xiaodan Yang, Liang Xu, Jian Chen, Zhong Lin Wang, Wei ZhongAbstract:Abstract Water Wave energy is one of the tremendous clean energy reserves on earth. The utilization of Wave power has long been focused but at limited scope due to challenges such as cost and durability in severe ocean environment. Here, a macroscopic self-assembly network of encapsulated triboelectric nanogenerators (TENGs) is proposed for the first time for Water Wave energy harvesting. By a rationally designed self-adaptive magnetic joints, the network demonstrated capabilities of self-assembly, self-healing and facile reconfiguration, greatly improving the autonomy and robustness of the system. A three-dimensional electrode structure boosts the output of the TENG unit, with an average power density of 8.69 W m−3 under ideal agitations and 2.05 W m−3 in Water Waves, which is more than 18 times of the power of the reported ball-shell structured device despite lower agitation frequency here. The self-assembly TENG network as a robust and high-performance structure should provide a reliable route towards large-scale utilization of the Water Wave energy, enabling self-powered systems in ocean.
Tao Jiang - One of the best experts on this subject based on the ideXlab platform.
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spherical triboelectric nanogenerator based on spring assisted swing structure for effective Water Wave energy harvesting
Nano Energy, 2021Co-Authors: Xi Liang, Tao Jiang, Yawei Feng, Zhirong Liu, Jiajia Han, Pengfei Chen, Zhong Lin WangAbstract:Abstract Ocean Wave energy is one of the most promising clean and renewable energy sources, so developing effective methods to collect such ‘random’ and ultra-low frequency energy is indispensable. The invention of triboelectric nanogenerators (TENGs) provides new prospects for large-scale blue energy harvesting. In this work, a new spherical TENG based on the coupling of spring-assisted structure and swing structure, integrated with a charge excitation circuit (CEC), was constructed to scavenge Water Wave energy. The particular structure can transform low-frequency Water Wave vibrations to high-frequency motions, elevating the frequencies of electrical outputs. Moreover, a TENG array consisting of four TENGs with CECs was fabricated, exhibiting a maximum output power of 16.6 mW and a 205 times enhanced output current of 23.3 mA. The charge excitation TENG array was demonstrated to successfully power a digital thermometer and a wireless signal transmission and reception system without any external power supply. Our study not only provides a new type of TENG with improved performance, but also offers a strategy for constructing maritime internet of things (IoTs) system.
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soft contact cylindrical triboelectric electromagnetic hybrid nanogenerator based on swing structure for ultra low frequency Water Wave energy harvesting
Nano Energy, 2021Co-Authors: Yawei Feng, Xi Liang, Tao JiangAbstract:Abstract Ocean Waves are promising green sources for energy exploitation, but harvesting such energy is quite challenging due to the apparent drawbacks of ultra-low vibration frequency and low efficiency. Here, a hybrid nanogenerator containing soft-contact cylindrical triboelectric nanogenerator and electromagnetic generator with swing structure was designed for ultra-low frequency Wave energy converting. Brushes made of flexible rabbit hairs were introduced to separate stator-rotor pairs, with the function of charge pumping onto dielectric surface, which can reduce the operation resistance and improve the device durability. Based on the swing motion of rotor, over 60 current pulses can be generated within 15 s from either module by one external triggering, implying the output frequency multiplication and operation time extension. The optimized hybrid nanogenerator exhibits the best output response at 0.1 Hz of Water Wave agitation, delivering a peak power density of 10.16 W·m−3 and an average power density of 0.23 W·m−3. Furthermore, self-powered temperature mapping and wireless transmitting were successfully realized by a hybrid nanogenerator array to demonstrate its capability in collecting ultra-low frequency Water Wave energy. The distinctive structure and operation mechanism prompt the proposed hybrid nanogenerator to be a good candidate for large-scale blue energy harvesting.
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cylindrical triboelectric nanogenerator based on swing structure for efficient harvesting of ultra low frequency Water Wave energy
Applied physics reviews, 2020Co-Authors: Yawei Feng, Tao Jiang, Zhong Lin Wang, Xi LiangAbstract:Ocean Wave energy is a promising energy source for large-scale exploitation owing to its abundant reserve and renewability. An effort is underway to develop a generator that can adapt to the ultra-low frequency of ocean Wave vibration. Here, we designed a cylindrical triboelectric nanogenerator with an internal swing structure for effective Water Wave energy harvesting. Based on the supporting effect of the bearing component, the rotary dielectric films can be suspended over the stator electrodes, rather than coming into direct contact with them. Benefiting from the largely reduced resistance and continuous swing of an internal rotary component, the fabricated triboelectric nanogenerator can operate for about 85 s and produce over one thousand current pulses after one Water Wave excitation. Being agitated by a 0.033 Hz Water Wave (during a period of 30 s), the optimized cylindrical triboelectric nanogenerator can produce a peak power density of 231.6 mW·m−3 and an average one of 39.8 mW·m−3. Successful demonstrations of powering portable electronic devices and iron material corrosion inhibition under such simulated excitation indicate the robust capability for ultra-low-frequency Water Wave energy conversion. This triboelectric nanogenerator offers a new vision for efficient ultra-low-frequency Wave energy harvesting with the possibility of large-scale blue energy.
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spherical triboelectric nanogenerator integrated with power management module for harvesting multidirectional Water Wave energy
Energy and Environmental Science, 2020Co-Authors: Xi Liang, Tao Jiang, Guoxu Liu, Yawei Feng, Zhong Lin WangAbstract:With the increasing deterioration of the natural environment, exploiting clean and renewable energy has become the top priority of scientific research today. One of the most prospective routes is to harvest Water Wave energy using triboelectric nanogenerator (TENG). In this work, a spherical TENG based on spring-assisted multilayered structure was fabricated to collect multidirectional Water Wave energy, and a power management module (PMM) was integrated to manage the output energy. The output performance of the TENG device was found to be controlled by the Water Wave frequency, amplitude, and orientation angle between the triggering direction and middle plane. Furthermore, with the PMM, the spherical TENG could output a steady direct current (DC) voltage on a resistance, and the charging speed to a supercapacitor was improved by 100 times. The power-managed performance of the whole TENG was also influenced by the circuit connection configurations among multilayered TENGs. A digital thermometer and a Water level detection/alarm system were successfully driven by the power-managed TENG as the demonstrated applications. This work not only provides a type of spherical TENG capable of harvesting multidirectional Water Wave energy, but also effectively manages the output energy for practical applications toward blue energy. Our study demonstrates a typical example of how to build a self-charging power pack that can effectively use random energy in a regulated manner.
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coupled triboelectric nanogenerator networks for efficient Water Wave energy harvesting
ACS Nano, 2018Co-Authors: Liang Xu, Chuan He, Xiangyu Chen, Tao Jiang, Wei Zhong, Zhong Lin WangAbstract:Water Wave energy is a promising clean energy source, which is abundant but hard to scavenge economically. Triboelectric nanogenerator (TENG) networks provide an effective approach toward massive harvesting of Water Wave energy in oceans. In this work, a coupling design in TENG networks for such purposes is reported. The charge output of the rationally linked units is over 10 times of that without linkage. TENG networks of three different connecting methods are fabricated and show better performance for the ones with flexible connections. The network is based on an optimized ball-shell structured TENG unit with high responsivity to small agitations. The dynamic behavior of single and multiple TENG units is also investigated comprehensively to fully understand their performance in Water. The study shows that a rational design on the linkage among the units could be an effective strategy for TENG clusters to operate collaboratively for reaching a higher performance.
Liang Xu - One of the best experts on this subject based on the ideXlab platform.
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stacked pendulum structured triboelectric nanogenerators for effectively harvesting low frequency Water Wave energy
Nano Energy, 2019Co-Authors: Wei Zhong, Ding Li, Haiming Wang, Liang Xu, Zhong Lin WangAbstract:Abstract The invention of triboelectric nanogenerators (TENGs) provides an effective approach for harvesting Water Wave energy that is clean and renewable. Here, stacked pendulum-structured triboelectric nanogenerators for harvesting low-frequency Water Wave energy is proposed. The device works based on a pendulum-like principle through a compact disk-track structure that enables area contact instead of point contact while maintaining the susceptible rolling motion. Thus the tribo-electrification and the output are greatly enhanced in slow Water Waves. While only considering the volume of the TENG units, charge output density of 4622 μC m−3 can be achieved, which is more than 13.2 times of a typical ball-shell structured device. A peak power density of 14.71 W m−3 and an average power density of 1.05 W m−3 are obtained in low-frequency Water Waves below 0.5 Hz. The device shows great potential of the rolling area-contact design to enhance the output of TENG-based Wave energy harvester with excellent low-frequency performance, which is crucial to the development of TENGs for effectively exploiting abundant Water Wave energy.
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macroscopic self assembly network of encapsulated high performance triboelectric nanogenerators for Water Wave energy harvesting
Nano Energy, 2019Co-Authors: Xiaodan Yang, Liang Xu, Jian Chen, Zhong Lin Wang, Wei ZhongAbstract:Abstract Water Wave energy is one of the tremendous clean energy reserves on earth. The utilization of Wave power has long been focused but at limited scope due to challenges such as cost and durability in severe ocean environment. Here, a macroscopic self-assembly network of encapsulated triboelectric nanogenerators (TENGs) is proposed for the first time for Water Wave energy harvesting. By a rationally designed self-adaptive magnetic joints, the network demonstrated capabilities of self-assembly, self-healing and facile reconfiguration, greatly improving the autonomy and robustness of the system. A three-dimensional electrode structure boosts the output of the TENG unit, with an average power density of 8.69 W m−3 under ideal agitations and 2.05 W m−3 in Water Waves, which is more than 18 times of the power of the reported ball-shell structured device despite lower agitation frequency here. The self-assembly TENG network as a robust and high-performance structure should provide a reliable route towards large-scale utilization of the Water Wave energy, enabling self-powered systems in ocean.
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coupled triboelectric nanogenerator networks for efficient Water Wave energy harvesting
ACS Nano, 2018Co-Authors: Liang Xu, Chuan He, Xiangyu Chen, Tao Jiang, Wei Zhong, Zhong Lin WangAbstract:Water Wave energy is a promising clean energy source, which is abundant but hard to scavenge economically. Triboelectric nanogenerator (TENG) networks provide an effective approach toward massive harvesting of Water Wave energy in oceans. In this work, a coupling design in TENG networks for such purposes is reported. The charge output of the rationally linked units is over 10 times of that without linkage. TENG networks of three different connecting methods are fabricated and show better performance for the ones with flexible connections. The network is based on an optimized ball-shell structured TENG unit with high responsivity to small agitations. The dynamic behavior of single and multiple TENG units is also investigated comprehensively to fully understand their performance in Water. The study shows that a rational design on the linkage among the units could be an effective strategy for TENG clusters to operate collaboratively for reaching a higher performance.
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silicone based triboelectric nanogenerator for Water Wave energy harvesting
ACS Applied Materials & Interfaces, 2018Co-Authors: Tianxiao Xiao, Chunlei Zhang, Liang Xu, Tao Jiang, J Wang, Xi Liang, Jiajia Shao, Zhong Lin WangAbstract:Triboelectric nanogenerator (TENG) has been proven to be efficient for harvesting Water Wave energy, which is one of the most promising renewable energy sources. In this work, a TENG with a silicone rubber/carbon black composite electrode was designed for converting the Water Wave energy into electricity. The silicone-based electrode with a soft texture provides a better contact with the dielectric film. Furthermore, a spring structure is introduced to transform low-frequency Water Wave motions into high-frequency vibrations. They together improve the output performance and efficiency of TENG. The output performances of TENGs are further enhanced by optimizing the triboelectric material pair and tribo-surface area. A spring-assisted TENG device with the segmented silicone rubber-based electrode structure was sealed into a Waterproof box, which delivers a maximum power density of 2.40 W m–3, as triggered by the Water Waves. The present work provides a new strategy for fabricating high-performance TENG devi...
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Spring-assisted triboelectric nanogenerator for efficiently harvesting Water Wave energy
Nano Energy, 2017Co-Authors: Tao Jiang, Tianxiao Xiao, Yanyan Yao, Liang Xu, Limin Zhang, Zhong Lin WangAbstract:Ocean Waves are one of the most promising renewable energy sources for large-scope applications. Triboelectric nanogenerator (TENG) has been demonstrated to effectively harvest Water Wave energy possibly toward large-scale blue energy. In this work, a kind of spring-assisted TENG was designed and investigated for harvesting Water Wave energy. The idea of introducing spring is to store the potential energy built during mechanical triggering for multiple cycles of conversion into electricity afterward, and transform a low frequency motion into a high frequency oscillation for improving the energy harvesting efficiency. The output performance of the basic unit was optimized by adjusting the motor acceleration and spring parameters including the rigidity and length. There exists an optimized spring rigidity or spring length to produce the highest performance. By using the spring, the accumulated charge of the TENG can be increased by 113.0%, and the translated electric energy or efficiency can be improved by 150.3%. Then four optimized basic units were connected in parallel and packaged into a sealed box to harvest the Water Wave energy. The present work could provide an approach to improving the output performance and efficiency of TENGs in harvesting low-frequency Water Wave energy.
Xi Liang - One of the best experts on this subject based on the ideXlab platform.
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spherical triboelectric nanogenerator based on spring assisted swing structure for effective Water Wave energy harvesting
Nano Energy, 2021Co-Authors: Xi Liang, Tao Jiang, Yawei Feng, Zhirong Liu, Jiajia Han, Pengfei Chen, Zhong Lin WangAbstract:Abstract Ocean Wave energy is one of the most promising clean and renewable energy sources, so developing effective methods to collect such ‘random’ and ultra-low frequency energy is indispensable. The invention of triboelectric nanogenerators (TENGs) provides new prospects for large-scale blue energy harvesting. In this work, a new spherical TENG based on the coupling of spring-assisted structure and swing structure, integrated with a charge excitation circuit (CEC), was constructed to scavenge Water Wave energy. The particular structure can transform low-frequency Water Wave vibrations to high-frequency motions, elevating the frequencies of electrical outputs. Moreover, a TENG array consisting of four TENGs with CECs was fabricated, exhibiting a maximum output power of 16.6 mW and a 205 times enhanced output current of 23.3 mA. The charge excitation TENG array was demonstrated to successfully power a digital thermometer and a wireless signal transmission and reception system without any external power supply. Our study not only provides a new type of TENG with improved performance, but also offers a strategy for constructing maritime internet of things (IoTs) system.
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soft contact cylindrical triboelectric electromagnetic hybrid nanogenerator based on swing structure for ultra low frequency Water Wave energy harvesting
Nano Energy, 2021Co-Authors: Yawei Feng, Xi Liang, Tao JiangAbstract:Abstract Ocean Waves are promising green sources for energy exploitation, but harvesting such energy is quite challenging due to the apparent drawbacks of ultra-low vibration frequency and low efficiency. Here, a hybrid nanogenerator containing soft-contact cylindrical triboelectric nanogenerator and electromagnetic generator with swing structure was designed for ultra-low frequency Wave energy converting. Brushes made of flexible rabbit hairs were introduced to separate stator-rotor pairs, with the function of charge pumping onto dielectric surface, which can reduce the operation resistance and improve the device durability. Based on the swing motion of rotor, over 60 current pulses can be generated within 15 s from either module by one external triggering, implying the output frequency multiplication and operation time extension. The optimized hybrid nanogenerator exhibits the best output response at 0.1 Hz of Water Wave agitation, delivering a peak power density of 10.16 W·m−3 and an average power density of 0.23 W·m−3. Furthermore, self-powered temperature mapping and wireless transmitting were successfully realized by a hybrid nanogenerator array to demonstrate its capability in collecting ultra-low frequency Water Wave energy. The distinctive structure and operation mechanism prompt the proposed hybrid nanogenerator to be a good candidate for large-scale blue energy harvesting.
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cylindrical triboelectric nanogenerator based on swing structure for efficient harvesting of ultra low frequency Water Wave energy
Applied physics reviews, 2020Co-Authors: Yawei Feng, Tao Jiang, Zhong Lin Wang, Xi LiangAbstract:Ocean Wave energy is a promising energy source for large-scale exploitation owing to its abundant reserve and renewability. An effort is underway to develop a generator that can adapt to the ultra-low frequency of ocean Wave vibration. Here, we designed a cylindrical triboelectric nanogenerator with an internal swing structure for effective Water Wave energy harvesting. Based on the supporting effect of the bearing component, the rotary dielectric films can be suspended over the stator electrodes, rather than coming into direct contact with them. Benefiting from the largely reduced resistance and continuous swing of an internal rotary component, the fabricated triboelectric nanogenerator can operate for about 85 s and produce over one thousand current pulses after one Water Wave excitation. Being agitated by a 0.033 Hz Water Wave (during a period of 30 s), the optimized cylindrical triboelectric nanogenerator can produce a peak power density of 231.6 mW·m−3 and an average one of 39.8 mW·m−3. Successful demonstrations of powering portable electronic devices and iron material corrosion inhibition under such simulated excitation indicate the robust capability for ultra-low-frequency Water Wave energy conversion. This triboelectric nanogenerator offers a new vision for efficient ultra-low-frequency Wave energy harvesting with the possibility of large-scale blue energy.
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spherical triboelectric nanogenerator integrated with power management module for harvesting multidirectional Water Wave energy
Energy and Environmental Science, 2020Co-Authors: Xi Liang, Tao Jiang, Guoxu Liu, Yawei Feng, Zhong Lin WangAbstract:With the increasing deterioration of the natural environment, exploiting clean and renewable energy has become the top priority of scientific research today. One of the most prospective routes is to harvest Water Wave energy using triboelectric nanogenerator (TENG). In this work, a spherical TENG based on spring-assisted multilayered structure was fabricated to collect multidirectional Water Wave energy, and a power management module (PMM) was integrated to manage the output energy. The output performance of the TENG device was found to be controlled by the Water Wave frequency, amplitude, and orientation angle between the triggering direction and middle plane. Furthermore, with the PMM, the spherical TENG could output a steady direct current (DC) voltage on a resistance, and the charging speed to a supercapacitor was improved by 100 times. The power-managed performance of the whole TENG was also influenced by the circuit connection configurations among multilayered TENGs. A digital thermometer and a Water level detection/alarm system were successfully driven by the power-managed TENG as the demonstrated applications. This work not only provides a type of spherical TENG capable of harvesting multidirectional Water Wave energy, but also effectively manages the output energy for practical applications toward blue energy. Our study demonstrates a typical example of how to build a self-charging power pack that can effectively use random energy in a regulated manner.
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silicone based triboelectric nanogenerator for Water Wave energy harvesting
ACS Applied Materials & Interfaces, 2018Co-Authors: Tianxiao Xiao, Chunlei Zhang, Liang Xu, Tao Jiang, J Wang, Xi Liang, Jiajia Shao, Zhong Lin WangAbstract:Triboelectric nanogenerator (TENG) has been proven to be efficient for harvesting Water Wave energy, which is one of the most promising renewable energy sources. In this work, a TENG with a silicone rubber/carbon black composite electrode was designed for converting the Water Wave energy into electricity. The silicone-based electrode with a soft texture provides a better contact with the dielectric film. Furthermore, a spring structure is introduced to transform low-frequency Water Wave motions into high-frequency vibrations. They together improve the output performance and efficiency of TENG. The output performances of TENGs are further enhanced by optimizing the triboelectric material pair and tribo-surface area. A spring-assisted TENG device with the segmented silicone rubber-based electrode structure was sealed into a Waterproof box, which delivers a maximum power density of 2.40 W m–3, as triggered by the Water Waves. The present work provides a new strategy for fabricating high-performance TENG devi...
Yawei Feng - One of the best experts on this subject based on the ideXlab platform.
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spherical triboelectric nanogenerator based on spring assisted swing structure for effective Water Wave energy harvesting
Nano Energy, 2021Co-Authors: Xi Liang, Tao Jiang, Yawei Feng, Zhirong Liu, Jiajia Han, Pengfei Chen, Zhong Lin WangAbstract:Abstract Ocean Wave energy is one of the most promising clean and renewable energy sources, so developing effective methods to collect such ‘random’ and ultra-low frequency energy is indispensable. The invention of triboelectric nanogenerators (TENGs) provides new prospects for large-scale blue energy harvesting. In this work, a new spherical TENG based on the coupling of spring-assisted structure and swing structure, integrated with a charge excitation circuit (CEC), was constructed to scavenge Water Wave energy. The particular structure can transform low-frequency Water Wave vibrations to high-frequency motions, elevating the frequencies of electrical outputs. Moreover, a TENG array consisting of four TENGs with CECs was fabricated, exhibiting a maximum output power of 16.6 mW and a 205 times enhanced output current of 23.3 mA. The charge excitation TENG array was demonstrated to successfully power a digital thermometer and a wireless signal transmission and reception system without any external power supply. Our study not only provides a new type of TENG with improved performance, but also offers a strategy for constructing maritime internet of things (IoTs) system.
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soft contact cylindrical triboelectric electromagnetic hybrid nanogenerator based on swing structure for ultra low frequency Water Wave energy harvesting
Nano Energy, 2021Co-Authors: Yawei Feng, Xi Liang, Tao JiangAbstract:Abstract Ocean Waves are promising green sources for energy exploitation, but harvesting such energy is quite challenging due to the apparent drawbacks of ultra-low vibration frequency and low efficiency. Here, a hybrid nanogenerator containing soft-contact cylindrical triboelectric nanogenerator and electromagnetic generator with swing structure was designed for ultra-low frequency Wave energy converting. Brushes made of flexible rabbit hairs were introduced to separate stator-rotor pairs, with the function of charge pumping onto dielectric surface, which can reduce the operation resistance and improve the device durability. Based on the swing motion of rotor, over 60 current pulses can be generated within 15 s from either module by one external triggering, implying the output frequency multiplication and operation time extension. The optimized hybrid nanogenerator exhibits the best output response at 0.1 Hz of Water Wave agitation, delivering a peak power density of 10.16 W·m−3 and an average power density of 0.23 W·m−3. Furthermore, self-powered temperature mapping and wireless transmitting were successfully realized by a hybrid nanogenerator array to demonstrate its capability in collecting ultra-low frequency Water Wave energy. The distinctive structure and operation mechanism prompt the proposed hybrid nanogenerator to be a good candidate for large-scale blue energy harvesting.
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cylindrical triboelectric nanogenerator based on swing structure for efficient harvesting of ultra low frequency Water Wave energy
Applied physics reviews, 2020Co-Authors: Yawei Feng, Tao Jiang, Zhong Lin Wang, Xi LiangAbstract:Ocean Wave energy is a promising energy source for large-scale exploitation owing to its abundant reserve and renewability. An effort is underway to develop a generator that can adapt to the ultra-low frequency of ocean Wave vibration. Here, we designed a cylindrical triboelectric nanogenerator with an internal swing structure for effective Water Wave energy harvesting. Based on the supporting effect of the bearing component, the rotary dielectric films can be suspended over the stator electrodes, rather than coming into direct contact with them. Benefiting from the largely reduced resistance and continuous swing of an internal rotary component, the fabricated triboelectric nanogenerator can operate for about 85 s and produce over one thousand current pulses after one Water Wave excitation. Being agitated by a 0.033 Hz Water Wave (during a period of 30 s), the optimized cylindrical triboelectric nanogenerator can produce a peak power density of 231.6 mW·m−3 and an average one of 39.8 mW·m−3. Successful demonstrations of powering portable electronic devices and iron material corrosion inhibition under such simulated excitation indicate the robust capability for ultra-low-frequency Water Wave energy conversion. This triboelectric nanogenerator offers a new vision for efficient ultra-low-frequency Wave energy harvesting with the possibility of large-scale blue energy.
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spherical triboelectric nanogenerator integrated with power management module for harvesting multidirectional Water Wave energy
Energy and Environmental Science, 2020Co-Authors: Xi Liang, Tao Jiang, Guoxu Liu, Yawei Feng, Zhong Lin WangAbstract:With the increasing deterioration of the natural environment, exploiting clean and renewable energy has become the top priority of scientific research today. One of the most prospective routes is to harvest Water Wave energy using triboelectric nanogenerator (TENG). In this work, a spherical TENG based on spring-assisted multilayered structure was fabricated to collect multidirectional Water Wave energy, and a power management module (PMM) was integrated to manage the output energy. The output performance of the TENG device was found to be controlled by the Water Wave frequency, amplitude, and orientation angle between the triggering direction and middle plane. Furthermore, with the PMM, the spherical TENG could output a steady direct current (DC) voltage on a resistance, and the charging speed to a supercapacitor was improved by 100 times. The power-managed performance of the whole TENG was also influenced by the circuit connection configurations among multilayered TENGs. A digital thermometer and a Water level detection/alarm system were successfully driven by the power-managed TENG as the demonstrated applications. This work not only provides a type of spherical TENG capable of harvesting multidirectional Water Wave energy, but also effectively manages the output energy for practical applications toward blue energy. Our study demonstrates a typical example of how to build a self-charging power pack that can effectively use random energy in a regulated manner.
