Article
Thermodynamics
R. S. Ajimsha, Abhinav Mahapatra, A. K. Das, V. K. Sahu, P. Misra
Summary: In this study, triboelectric nanogenerators (TENGs) were fabricated using different growth temperatures of zinc oxide (ZnO) and polydimethylsiloxane (PDMS). The results showed that the output voltage/current of the TENGs increased with increasing ZnO growth temperature in the range of 450℃ to 600℃, but decreased with further increase in growth temperature up to 750℃. The TENGs fabricated with ZnO grown at 600℃ exhibited the highest electrical output with peak to peak voltage of -210V, current of -95μA, and power density of -8.8mW/cm2 when a periodic force of -30N @ 6Hz was applied. This enhanced output power density can be attributed to the large effective work function difference between ZnO and PDMS.
Review
Engineering, Chemical
Wanli Wang, Dongfang Yang, Xiaoran Yan, Licheng Wang, Han Hu, Kai Wang
Summary: This article summarizes the main research results of TENG in harvesting blue energy, including the basic principle, working modes, and applications of TENG, as well as the strategies for collecting and storing blue energy. Additionally, the development potential of TENG in the field of blue energy and some urgent problems that need to be solved are briefly discussed.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2023)
Review
Chemistry, Physical
Di Liu, Yikui Gao, Linglin Zhou, Jie Wang, Zhong Lin Wang
Summary: The development of the Internet of Things and AI has led to the evolution of energy demand and structure, sparking worldwide interest in power sources for distributed electronics and sensors. Triboelectric nanogenerators (TENGs) have emerged as a promising alternative energy harvesting technology due to their small size, light weight, flexibility, low cost, and high efficiency. This review provides a comprehensive discussion on high-performance TENGs, covering topics such as triboelectric charge density, output voltage, energy density, limitations, optimization methods, and potential directions for improvement.
Article
Engineering, Environmental
Shoaib Anwer, Muhammad Umair Khan, Baker Mohammad, Moh 'd Rezeq, Wesley Cantwell, Dongming Gan, Lianxi Zheng
Summary: This article focuses on developing a durable triboelectric nanogenerator (TENG) with high-power density and improved cycling performance by utilizing advanced 2D nano-materials and an innovative design. The optimized TENG demonstrated an open-circuit voltage (V-oc) of 390 V, short-circuit current (I-sc) of 96 μA, and a power density of 6.66 W/m². The research also explores the potential applications of the TENG, including pressure sensors and powering electronic devices.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Fengjiao Huang, Peng Yang, Zhaoqi Liu, Dehong Yang, Ling Huang, Yuxiang Shi, Xinglin Tao, Yao Chen, Hexing Li, Xiangyu Chen, Zhenfeng Bian
Summary: In this paper, a novel hybrid nanogenerator is proposed based on a water-wave TENG and evaporation generator, which provides a more effective approach to utilize the energy from water. The hybrid nanogenerator solves the problem of insufficient output of water wave TENGs in calm water. The evaporation generator can continuously generate direct currents during the spontaneous evaporation of water, with high solar-vapor conversion efficiency and significant power density.
Article
Chemistry, Physical
Heng Ning, Weiyu Zhou, Liang Tuo, Chuangjian Liang, Chunjin Chen, Songying Li, Hang Qu, Lingyu Wan, Guanlin Liu
Summary: This study proposes a tensegrity structure to effectively organize high-density stacked TENG units, achieving orderly contact and separation. The T-TENG reduces the device's height, increases the friction layer surface area density, and allows for adjusting the response frequency. It demonstrates high output voltage and charge per unit time, and the customization of gas discharge tubes amplifies its output power. This work provides a foundational model for developing high-density friction layers and high-output TENGs.
Article
Chemistry, Physical
Yurui Shang, Chengyu Li, Gao Yu, Yuhan Yang, Wenting Zhao, Wei Tang
Summary: This study proposes a multilayer spring TENG with a cushion layer structure, which improves the output performance of the basic TENG structure. The energy harvesting circuit is optimized based on the electrical performance parameters of the generator, and suitable electronic components are selected for the actual circuit. The small-size TENG (2 cm(3)) achieved a high storable power density (5.45 mW m(-2)). The fabrication method of the small-size TENG and the selection of electronic components based on the intrinsic electrical parameters of the TENG are summarized. This work provides valuable guidance for designing and fabricating self-powered IoT node devices.
Article
Chemistry, Physical
Xin Liu, Jinyang Zhang, Xuejiao Wang, Shiquan Lin, Zhong Lin Wang
Summary: Contact electrification and charge transfer occur at a liquid-solid interface when continuous droplets slide on the dielectric surface. We investigated the accumulation of static charges on the surface of dielectric solid materials during this process from the perspective of liquid chemistry at the atomic level. Our experiments showed that the rate of charge accumulation on the solid surface in liquid-solid systems depends on the liquid chemistry, particularly the ionic diameters of cations, concentration, and pH. This suggests that chemical factors play a significant role in charge transfer at a liquid-solid interface.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Peng Qian, Bo Feng, Huishen Wen, Xi Jiang, You Ying, Yulin Si, Dahai Zhang
Summary: The main challenge in wave energy utilization is improving the low energy conversion efficiency. This paper reports a novel triboelectric nanogenerator (TENG) based wave energy converter (WEC) control system that can significantly increase the energy harvesting efficiency through pressure control.
Article
Nanoscience & Nanotechnology
Dujuan Tan, Qixuan Zeng, Xue Wang, Songlei Yuan, Yanlin Luo, Xiaofang Zhang, Liming Tan, Chenguo Hu, Guanlin Liu
Summary: In this study, a fully symmetrical triboelectric nanogenerator based on an elliptical cylindrical structure (EC-TENG) is proposed for all-weather blue energy harvesting. The EC-TENG demonstrates advantages in energy harvesting and stability, and it can generate energy normally even under rough sea conditions. Additionally, the EC-TENG can be used to light up LEDs, drive small electronics, and monitor water level in real-time.
NANO-MICRO LETTERS
(2022)
Article
Chemistry, Physical
Shaoshi Dai, Yuanchao Chai, Hengxu Liu, Dan Yu, Keyi Wang, Fankai Kong, Hailong Chen
Summary: This article introduces a triboelectric nanogenerator based on liquid mercury (M-TENG) for low-cost and high-power harvesting, which contributes to the development of wave energy conversion technologies. The startup performance, kinematic inputs, structural parameters, and materials aspects of the M-TENG unit at low operating frequencies are analyzed. The sloshing characteristics of mercury in a rectangular unit are calculated, and the matching law between mercury volume and electrical output is derived. Furthermore, an 18-unit integrated M-TENG produces a peak power output of 4.57 mW, with sufficient transferred charge density to light 270 commercial LEDs.
Article
Chemistry, Multidisciplinary
Chuguo Zhang, Wei Yuan, Baofeng Zhang, Jiayi Yang, Yuexiao Hu, Lixia He, Xuejiao Zhao, Xiuhan Li, Zhong Lin Wang, Jie Wang
Summary: The floating water wave energy harvesting devices have economic advantages, and the self-adaptive rotating triboelectric nanogenerator (SR-TENG) provides a new approach for wave energy harvesting. The SR-TENG has achieved an average mass power density of 45.18 mW kg(-1) under low frequency driving conditions, which is about 10 times higher than the reference electromagnetic generator.
Article
Chemistry, Physical
Yuxue Duan, Hongxuan Xu, Shijie Liu, Pengfei Chen, Xiangyi Wang, Liang Xu, Tao Jiang, Zhong Lin Wang
Summary: Rolling-structured TENGs provide an efficient way to harvest water wave energy, offering new possibilities for achieving carbon neutrality.
Article
Chemistry, Multidisciplinary
Renwei Cheng, Kai Dong, Pengfei Chen, Chuan Ning, Xiao Peng, Yihan Zhang, Di Liu, Zhong Lin Wang
Summary: This study developed a lightweight, highly flexible fabric-based direct current TENG with high power output, by coating two electrodes on a polyester-cotton fabric. Various structural parameters and environmental factors were explored to enhance the understanding of the fabric-based TENG, which can efficiently harvest surface charges induced by triboelectrification. This innovation presents a potential shift in the development of high output direct current power fabrics for wearable electronics.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Yuanzheng Luo, Buyin Li, Lianghao Mo, Zhicheng Ye, Haonan Shen, Yuan Lu, Shufa Li
Summary: Developing clean and renewable ocean wave energy is essential for achieving carbon neutrality. This study focuses on designing a low-cost spherical TENG to efficiently harvest low-frequency wave energy. Experimental results demonstrate that the spherical TENG shows high output performance in water waves.
Review
Nanoscience & Nanotechnology
Yizhu Shan, Xi Cui, Xun Chen, Zhou Li
Summary: This review provides an overview of the development and application of neural electrodes, with a focus on the indirect neuromodulation based on piezoelectric materials. The field aims to develop more flexible, miniaturized, biocompatible, and multifunctional neural interfaces for the treatment of various diseases. The review also discusses the challenges of implementing these new interfaces in clinical practice and offers perspectives on future developments in practical electroactive neural interfaces.
WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY
(2023)
Article
Engineering, Chemical
Jingang Yang, Liguo Song, Chengqi Deng, Hao Sui, Dionysios D. Dionysiou, Zhitao Han, Minyi Xu, Xinxiang Pan
Summary: This study proposes a novel non-circulation cleaning method using combined hydrodynamic cavitation and chlorine dioxide for simultaneous desulfurization and denitration of ship exhaust. The results show that hydrodynamic cavitation effectively removes sulfur dioxide, and the combined method performs better than hydrodynamic cavitation alone. Further experiments reveal that the denitration efficiency can reach around 95.0% with the optimized parameters.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Zhe Li, Cong Li, Wei Sun, Yuan Bai, Zhou Li, Yulin Deng
Summary: Implantable and wearable transient electronics based on PEGDA/Lap nanocomposite hydrogel have been developed, which exhibit enhanced flexibility, mechanical and electrical performance, and good biocompatibility. These devices can serve as self-powered devices to light an LED and monitor breath and human movements in real-time. Moreover, they can degrade controllably without causing harm, making them important in biomedical science.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Changxin Liu, Nanxi Chen, Guangyi Xing, Runhe Chen, Tong Shao, Baichuan Shan, Yilin Pan, Minyi Xu
Summary: In this research, an underwater flow direction sensing method based on the thermal tactility of the micro thermoelectric generator (MTEG) is proposed and verified through experiments. The prototype can accurately identify the flow direction within 2 seconds in a flow velocity range of 0 to 5 m/s and a flow direction variation range of 0 to 90 degrees. This method is cheaper and easier to be applied on underwater vehicles than traditional methods, and has great application prospects.
Article
Engineering, Electrical & Electronic
Linan Guo, Guitao Wu, Qunyi Wang, Tong Li, Bohan Yao, Yongjiu Zou, Minyi Xu
Summary: Pressure sensors are widely used in industrial automatic-control environments, and with the development of IoT technology, the demand for environmental adaptability and reliability of pressure sensors is increasing. Triboelectric pressure sensors, with their self-powered characteristic, are highly sensitive and environmentally adaptable, making them suitable for IoT applications.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Review
Chemistry, Multidisciplinary
Taili Du, Fangyang Dong, Ziyue Xi, Meixian Zhu, Yongjiu Zou, Peiting Sun, Minyi Xu
Summary: With the development of autonomous/smart technologies and the Internet of Things, wireless sensor nodes play a vital role in intelligent mechanical engineering. However, traditional power supply methods face challenges such as layout difficulties and environmental pollution. Therefore, it is crucial to harvest mechanical vibration energy using technologies like the triboelectric nanogenerator to provide in situ power supply for these nodes. This review systematically reviews recent achievements and discusses challenges and development orientation for mechanical vibration energy harvesting based on TENG, which will contribute to the future development of intelligent mechanical engineering in the era of IoT.
Article
Chemistry, Multidisciplinary
Xiu Xiao, Ling Liu, Ziyue Xi, Hongyong Yu, Wenxiang Li, Qunyi Wang, Cong Zhao, Yue Huang, Minyi Xu
Summary: This paper proposes a novel acoustic triboelectric nanogenerator (QWR-TENG) for efficient low-frequency acoustic energy harvesting, aiming to provide power for the distributed nodes of the rapidly developing Internet of Things technology. Simulation and experimental studies show that the optimized QWR-TENG has excellent electrical output performance with a maximum output voltage of 255 V, a short-circuit current of 67 muA, and a transferred charge of 153 nC under the acoustic frequency of 90 Hz and sound pressure level of 100 dB. Furthermore, a conical energy concentrator is introduced, and a composite quarter-wavelength resonator-based triboelectric nanogenerator (CQWR-TENG) is designed to enhance the electrical output. The results demonstrate that the maximum output power and power density per unit pressure of CQWR-TENG reach 13.47 mW and 2.27 WPa(-1)m(-2), respectively. Application demonstrations indicate that QWR/CQWR-TENG has good capacitor charging performance and is expected to provide power supply for distributed sensor nodes and other small electrical devices.
Review
Materials Science, Multidisciplinary
Yongjiu Zou, Junpeng Wang, Zhiyuan Hu, Minzheng Sun, Jianhua Liu, Taili Du, Peiting Sun, Minyi Xu
Summary: With the rapid development of advanced materials and manufacturing technologies, flow sensors have made significant progress in the field of mechanical engineering, which can cater to the development trend of the Internet of Things (IoT) and the ongoing Fourth Industrial Revolution. Triboelectric nanogenerators (TENGs), based on the coupling effect of contact electrification and electrostatic induction, have been demonstrated to convert mechanical movements of the fluid into electrical signals with various features such as flexibility, conformability, and user-friendliness. This review systematically summarizes the fundamental working mechanism, rational structural design, and analysis of practical application scenarios of triboelectric flow sensors as an emerging technology for flow monitoring of the Industrial IoT.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Engineering, Marine
Xiu Xiao, Qunyi Wang, Bohan Yao, Linan Guo, Chuanqing Zhu, Cong Zhao, Ling Liu, Minyi Xu
Summary: This paper presents a low-frequency vibration sensor (LV-TENG) based on a cantilever-beam-structured triboelectric nanogenerator, which can perform high-precision vibration sensing while effectively collecting vibration energy. The structure of the LV-TENG was optimized through theoretical analysis and experimental investigations to enhance its electrical output performance. The results show that the LV-TENG can accurately sense structure vibration and has potential applications in structural health monitoring analysis in marine engineering.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Analytical
Wei Sun, Jiangtao Xue, Puchuan Tan, Bojing Shi, Yang Zou, Zhou Li
Summary: For outdoor workers or explorers, wearable electronic devices are crucial for continuous health monitoring and personal rescue functions. However, their limited battery capacity hinders their ability to function normally for extended periods. In this study, a self-powered multifunctional bracelet is proposed, utilizing a hybrid energy supply module and a coupled pulse monitoring sensor integrated with a watch's structure. This bracelet harvests kinetic and potential energy from the strap's movement, generating a voltage of 69V and a current of 87mA, while providing stable pulse monitoring and wireless transmission of user information. The bracelet also features rescue and illuminating lights. This design demonstrates the wide applications of a self-powered multifunctional bracelet.
Article
Mechanics
Jianchun Mi, Mengwei Wu, Minyi Xu
Summary: The present study investigates the molecular unmixedness and its dependence on the initial conditions in a turbulent jet. The parameter of molecular segregation between the injected fuel fluid and entrained oxidizer fluid, alpha, is quantified. The expression of alpha is derived and validated by comparing measured natural-gas flames. The jet nozzle configuration and jet density ratio are found to significantly affect alpha.
Review
Materials Science, Multidisciplinary
Mengwei Wu, Chuanqing Zhu, Jicang Si, Hao Wang, Minyi Xu, Jianchun Mi
Summary: This review paper focuses on the application of triboelectric nanogenerators (TENGs) in flow energy harvesting and self-powered flow sensing systems, as well as the latest research progress in this field. The working principle of TENG is introduced in detail, followed by the classification and summary of common applications in flow energy harvesting. The paper also elucidates the common applications of TENG in flow sensing, discusses the current challenges, and proposes future research directions.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Biomaterials
Jian Cheng, Jiangtao Xue, Yuan Yang, Dengjie Yu, Zhuo Liu, Zhou Li
Summary: In this study, hierarchical hydrogel scaffolds with a clustered and oriented structure were developed using directional freezing and drying under stretching. The scaffolds successfully guided the alignment and orientation of cells, which is promising for tissue regeneration.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Review
Chemistry, Analytical
Jiaxuan Li, Lingling Xu, Yang Zou, Zhou Li
Summary: The introduction of self-powered technology allows for long-term wearability of sensors by converting environmental energy into electrical energy. This technology can provide advanced functions such as extended lifespan, miniaturization, flexibility, and wireless data transmission and mobile data processing capabilities.
SENSORS & DIAGNOSTICS
(2023)
Review
Chemistry, Multidisciplinary
Weikang Luo, Ruizeng Luo, Jingjing Liu, Zhou Li, Yang Wang
Summary: This review provides a comprehensive insight into recent advances in self-powered controlled drug release systems based on nanogenerators. It emphasizes the importance of autonomous devices and discusses the challenges and prospects from clinical needs and practical translation.
ADVANCED FUNCTIONAL MATERIALS
(2023)
