Article
Chemistry, Physical
Zhaozheng Wang, Likun Gong, Sicheng Dong, Beibei Fan, Yuan Feng, Zhi Zhang, Chi Zhang
Summary: This study reports a humidity-enhanced silicon-based semiconductor tribovoltaic direct-current nanogenerator, which can achieve high transferred charge and peak power in high-humidity environments. It also analyzes the mechanism of performance improvement and highlights the great potential of this technology in energy harvesting in high-humidity environments.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Materials Science, Multidisciplinary
Liqiang Zhang, Haifang Cai, Liang Xu, Li Ji, Daoai Wang, Youbin Zheng, Yange Feng, Xudong Sui, Yufeng Guo, Wanlin Guo, Feng Zhou, Weimin Liu, Zhong Lin Wang
Summary: In this study, a new macroscale superlubric triboelectric nanogenerator (SL-TENG) was developed to achieve ultra-low friction and wear under high-contact stress. The SL-TENG showed high power density and output current, and the ultralow friction on the hydrogenated surface was identified as the key factor. The SL-TENG demonstrated the ability to light up LEDs without rectification and enable online friction monitoring and early warning.
Article
Materials Science, Multidisciplinary
Z. Zhang, T. He, J. Zhao, G. Liu, Z. L. Wang, C. Zhang
Summary: The study discusses the coupling effects of frictional heating, triboelectrification, and semiconductor materials. Rubbing a metal on a semiconductor can lead to the generation of thermoelectric and tribovoltaic effects, resulting in the movement of majority carriers and the generation of direct current. The output is influenced by factors such as frictional energy, temperature difference, velocity, and pressure, demonstrating the potential for multi-source energy harvesting.
MATERIALS TODAY PHYSICS
(2021)
Article
Chemistry, Physical
Ruichao Zhang, Mingmin Hao, Suo Bai, Peizu Song, Xiaofeng Jia, Weihao Gao, Qi Xu, Juan Wen, Li Cheng, Yong Qin
Summary: This paper reports a multichannel driving TENG (MTNG) that utilizes the external electric field to drive the flow of electrons in multiple channels and generate multiple outputs simultaneously. By increasing the number of driving channels and decreasing the thickness of dielectric layers, the output charge density of MTNG reaches the highest reported value of 5.35 mC m(-2) for TENGs. This work provides a new approach to improve the output performance of TENGs.
Article
Chemistry, Physical
Xiaoping Chen, Fangjia Zhang, Chi Han, Yina Liu, Guan Yu Chen, Xuhui Sun, Zhen Wen
Summary: A formal physical framework of triboelectric nanogenerators (TENGs) based on Maxwell's equations was introduced, and a quasi-electrostatic three-dimensional (QETD) charge model was constructed. Finite element modeling simulations were used to analyze the distribution of polarization vector, electric potential, electric field, and electric displacement. An optimized theoretical framework for TENGs was established and validated, providing accurate predictions for TENGs' performance.
Article
Chemistry, Physical
Di Yang, Liqiang Zhang, Ning Luo, Ying Liu, Weixiang Sun, Jialiang Peng, Min Feng, Yange Feng, Haifeng Wang, Daoai Wang
Summary: The relationship between triboelectrification and tribological characteristics at the metal-semiconductor heterojunction interface was studied, and a new strategy for achieving a stable DC triboelectric output and wear resistance was proposed through controlling the tribological behavior.
Article
Materials Science, Multidisciplinary
Meihua Chen, Xin Cui, Yaming Zhang, Pingjin Zou, Ling Xiao, Mengzhe Kang, Junyang Chen, Junjin Ren, Zengyi Fang, Lijie Li, Jinyi Lang, Yan Zhang, Zhong Lin Wang
Summary: Wearable and implantable friction-based nanogenerators (TENGs) can convert human body movements into electricity. The self-generated dynamic electric field of TENGs offers a key technology for precision medicine, inhibiting the proliferation of cancer cells and reducing damage to healthy tissues.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Hui Yuan, Jiaojiao Zhang, Sigal Rencus-Lazar, Zewei Ren, Ruikang Lin, Ehud Gazit, Rusen Yang
Summary: Mechanically robust amino acid crystals formed by physical vapor deposition are used as positive triboelectric materials, resulting in a 50% increase in the output voltage of triboelectric nanogenerators. The electric field-induced molecular packing leads to a surface with charged amino groups that enhance the output voltage of the nanogenerators. This work provides insight into designing high-performance electric devices for bioengineering applications.
Article
Engineering, Mechanical
Weiqiang Zhang, Weimin Bao, Xiaozhou Lu, Dongfeng Diao
Summary: Friction force plays an important role in the excitation effect of sliding-mode triboelectric nanogenerator (TENG). The study found that the short-circuit output current (Isc) of the TENG increased with the increase of friction force under constant friction force, and cyclic friction force significantly excited the Isc. It was also observed that a small friction force after cyclic friction force excitation was beneficial for electrical performance. The mechanism behind this is that a large friction force can result in increased local friction heat temperature, which greatly affects the transfer and redistribution of electrons at the friction interface. Therefore, having the proper friction force is crucial for improving the output performance rather than simply increasing the friction force.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Chemistry, Physical
Jilong Mo, Yanhua Liu, Qiu Fu, Chenchen Cai, Yanxu Lu, Wanhai Wu, Zhenxia Zhao, Hainong Song, Shuangfei Wang, Shuangxi Nie
Summary: This study proposes a method to enhance photocatalytic efficiency using wave energy, which can effectively remove antibiotics from water, with the characteristics of being environmentally friendly and low cost.
Article
Chemistry, Physical
You-Sun Lee, Sera Jeon, Dabin Kim, Dong-Min Lee, Dohyung Kim, Sang-Woo Kim
Summary: In this study, direct current-generating triboelectric nanogenerators (DC-TENGs) based on the tribovoltaic p-n junction using n-type perovskite (CsFAMA) and p-type conductive polymer (PEDOT:PSS) were developed. The CsFAMA based DC-TENG showed a high DC power output of about 2.1 μA cm-2 and 0.33 V. The introduction of choline chloride (ChCl) to passivate the defects inside CsFAMA improved the power-generating performance of DC-TENG by increasing triboelectric charge density, carrier mobility, and built-in potential. By reducing defect sites, enhancing electron mobilities, and modulating work function, the passivated CsFAMA-based DC-TENG generated an output current density of 11 μA cm-2 and an output voltage of 0.80 V. This study is important for the development of high-performance DC-TENGs by controlling the triboelectric semi-conducting interface.
Review
Engineering, Electrical & Electronic
Qianqian Luo, Kai Xiao, Jicai Zhang, Wenhong Sun
Summary: With the rapid development of technology and the expansion of the information age, self-powered systems are gradually emerging. Triboelectric nanogenerators (TENGs), coupling contact electrification and electrostatic induction, can realize continuous power supplied for small devices by converting energy. Traditional TENGs mainly used organic polymer insulators as triboelectric materials, which are limited by low current density alternating current. Recently, many different semiconductor material systems, especially gallium nitride (GaN), have been tried for better electric output performance or more application potential due to their high current density direct current, which can improve the output performance and mechanical properties of TENGs and have important application value at the forefront of portable electronic devices, Internet of things, environmental and infrastructural monitoring, medical science, security, and other fields. In this review, we summarize the latest research achievements and progress on TENGs with different semiconductor structures, including metal-semiconductor TENGs, semiconductor-semiconductor TENGs, metal-insulator-semiconductor TENGs, and liquid-semiconductor TENGs. On the basis of the current TENG theory of tribovoltaic effect, the generation mechanism and performance of each TENG was represented. Direct-current TENGs based on semiconductor structure show great promise for self-powered electronic devices.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jin-Kyeom Kim, Gi Hyeon Han, Sun-Woo Kim, Hee Jun Kim, Rahul Purbia, Dong-Min Lee, Jong Kyu Kim, Hee Jae Hwang, Hyun-Cheol Song, Dukhyun Choi, Sang-Woo Kim, Zhong Lin Wang, Jeong Min Baik
Summary: In this study, a new strategy was developed to achieve maximum charge density in a high-output triboelectric nanogenerator (TENG). By designing a cationic material structure of SiO2 and MoS2 coated on a Ni-mesh, the new TENG generated significantly higher output power and superior charge density compared to Ni-mesh-based TENGs. The high charge density was attributed to the low work function of MoS2, upward bending of the energy band at the MoS2-SiO2 interface, and the high charge capacity of SiO2. The TENG demonstrated an average output power of 14.75 W m(-2) based on the gear-cam mode.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Qiu Fu, Yanhua Liu, Jilong Mo, Yanxu Lu, Chenchen Cai, Zhenxia Zhao, Shuangfei Wang, Shuangxi Nie
Summary: This study utilized P-TENG technology to efficiently remove gaseous acetaldehyde pollution, achieving the goals of high-efficiency degradation of acetaldehyde and a cleaner environment.
Article
Chemistry, Physical
Lin Lin Sun, ChengYu Li, Xi Chen, Wei Tang
Summary: The study utilized TENG to investigate the impact of UV light and ozone on contact electrification of polymers, revealing that electron transfer at various interfaces can be weakened by UV light and further inhibited by O-3. Additionally, it was found that photoexcitation electrification performance of polymers depends on their electron-withdrawing ability, with UV light and O-3 enhancing this process. The proposed photoelectron excitation model provides insight into the effect of UV light and O-3 on the electrification performance of polymers, offering strong evidence of the electron transfer process at different solid-solid, liquid-solid, and gas-solid interfaces.
Review
Multidisciplinary Sciences
Xiong Pu, Chi Zhang, Zhong Lin Wang
Summary: This article comprehensively reviews the research progress of the triboelectric nanogenerator (TENG) as a promising mechanical-to-electrical energy conversion technology for wearable power sources and self-powered sensors. The increasing demands in multifunction require high-performance energy and sensor devices for wearable electronics. TENG, which can convert mechanical energy into electricity, has drawn extensive attention and research efforts worldwide for its potential application in wearable devices.
NATIONAL SCIENCE REVIEW
(2023)
Article
Nanoscience & Nanotechnology
Jianhua Zeng, Junqing Zhao, Tianzhao Bu, Guoxu Liu, Youchao Qi, Han Zhou, Sicheng Dong, Chi Zhang
Summary: A flexible tribotronic artificial synapse (TAS) with bioinspired neurosensory behavior is developed, which demonstrates a series of synaptic behaviors by external stimuli and remains stable under strain conditions. Furthermore, Pavlovian conditioning has been successfully mimicked. This research has significant implications for the practical application of artificial limbs, robotics, and bionics in the future.
NANO-MICRO LETTERS
(2023)
Article
Chemistry, Physical
Guoxu Liu, Ruifei Luan, Youchao Qi, Likun Gong, Jie Cao, Zhihao Wang, Feng Liu, Jianhua Zeng, Xinlong Huang, Yuhan Qin, Sicheng Dong, Yuan Feng, Long-Biao Huang, Chi Zhang
Summary: This research presents a direct current flexible textile organic tribovoltaic nanogenerator (FT-OTG) that improves the output performance and mechanical properties of FT-OTG. The FT-OTG is composed of a blended film of PEDOT: PSS and PVA, a conductive ink, a conductive textile, and an Al slider. The improved FT-OTG can be used for self-powered portable electronic devices and Internet of Things (IoT) sensors.
Article
Chemistry, Multidisciplinary
Zhaocheng Lu, Chi Zhang, Sun Hwa Kwon, Zhipeng Jiang, Lin Dong
Summary: Converting mechanical energy into electrical energy is vital for flexible electronics, and a hybrid energy harvesting strategy using porous polymeric piezoelectric film and electrostatic layer has been developed. The engineered microstructures of the piezoelectric materials enhance energy generation, while the electrostatic effect from the charged layer contributes to electrical charge generation. By integrating stretchable carbon nanotubes onto elastomers, complex electronics can be designed. The hybrid piezoelectric-electrostatic device shows superior energy harvesting performance, with a voltage output of 1.95V, an improvement of 30% and 100% compared to the electrostatic and piezoelectric alone devices, respectively. Experiments demonstrate the device's ability to power small electronics and recognize different body motions. This hybrid strategy offers a new solution for the future energy revolution in flexible electronics.
ADVANCED MATERIALS INTERFACES
(2023)
Review
Materials Science, Multidisciplinary
Shengxin Xiang, Yuanwei Wang, Chi Zhang, Zhiwei Zhao, Baoping Wang, Wenjun Zou, Jun Wu
Summary: With the rapid development of IoT technology, smart contact lenses have emerged as a new type of device that can monitor physiological information of the eye. By incorporating sensing, connection, and application layers, smart contact lenses enable real-time non-invasive monitoring of eye diseases, helping individuals gain better understanding of their physical condition.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Xianpeng Fu, Yuhan Qin, Zhi Zhang, Guoxu Liu, Jie Cao, Beibei Fan, Zhaozheng Wang, Zheng Wang, Chi Zhang
Summary: This study proposes an ultra-robust and high-performance rotational triboelectric nanogenerator (R-TENG) by using a bearing charge pumping mechanism. The R-TENG consists of a pumping TENG (P-TENG), an output TENG (O-TENG), a voltage-multiplying circuit (VMC), and a buffer capacitor. The P-TENG is designed with a freestanding mode based on a rolling ball bearing, which serves as the rotating mechanical energy harvester. The low charge generated by the P-TENG is accumulated and pumped to the non-contact O-TENG, resulting in reduced mechanical wear and increased output performance. The matched instantaneous power of R-TENG is increased by 32 times at 300 r/min, and the transferring charge remains at 95% during 15 days of continuous operation (6.4 x 10(6) cycles). This work presents a feasible method to enhance the durability of TENG, which can facilitate the practical applications of high-performance TENG in harvesting distributed ambient micro mechanical energy.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Zhihao Wang, Junqing Zhao, Likun Gong, Zheng Wang, Yuhan Qin, Zhaozheng Wang, Beibei Fan, Jianhua Zeng, Jie Cao, Chi Zhang
Summary: This paper proposes a near-zero quiescent power sound wake-up and identification system based on a triboelectric nanogenerator (TENG), which can harvest ambient sound energy and activate the system. The system utilizes a deep learning technique to identify sound sources and can transmit recorded sound signals to a remote computer for recognition. In standby mode, the system has extremely low power consumption. This research has great application prospects in smart homes, unmanned monitoring, and the Internet of Things.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Bo Peng, Xinyue Wu, Chi Zhang, Chao Zhang, Lingyi Lan, Jianfeng Ping, Yibin Ying
Summary: A self-adhesive, water-proof, and gas-permeable electrode was fabricated by in situ electrospinning of a polylactic acid nanofiber membrane (PLANFM) on a leaf, spraying a layer of the carbon nanotube membrane (CNTM) on PLANFM, and in situ electrospinning of PLANFM on CNTM. The electrodes could be self-adhered to the leaf via electrostatic adhesion and formed a capacitance sensor. The in situ fabricated electrode did not affect plant physiological parameters, and a wireless leaf capacitance sensing system was developed to detect the change of plant water status in the early stage of drought stress.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Beibei Fan, Zhaozheng Wang, Guoxu Liu, Zheng Wang, Xianpeng Fu, Likun Gong, Chi Zhang
Summary: A robust flexible textile tribovoltaic nanogenerator based on a 2D dynamic heterojunction of 2H-MoS2/Ta4C3 has been developed. During the friction process, an electric field is generated and a significant number of electron-hole pairs are excited to generate direct current through the dynamic heterojunction. The output power density and robustness of the nanogenerator are investigated.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Jia Xin Liu, Guoxu Liu, Zi Hao Guo, Weiguo Hu, Chi Zhang, Xiong Pu
Summary: This work presents a stretchable electret-based triboelectric nano-generator (SEB-TENG) for stretchable and wearable electronics. The device exhibits high stretchability, high charge density, and can be used to power electronic devices. A power management module (PMM) is also designed to optimize energy utilization.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Songtao Hu, Xijia Ding, Beibei Fan, Chi Zhang, Bo Zhang, Xi Shi, Zhike Peng
Summary: This study reports a solid-liquid triboelectric nanogenerator (TENG) sensing technique for position sensing of inkjet printing. A self-aware array assembled by four single-electrode-mode TENG units can achieve droplet positioning based on the triboelectric output. The open-circuit voltage is considered as the key index to precisely characterize the deposition positioning of jetting droplets.
Article
Chemistry, Physical
Yan Shi, Heran Li, Xianpeng Fu, Ruifei Luan, Yixuan Wang, Na Wang, Zhibo Sun, Yanxia Niu, Changhui Wang, Chi Zhang, Zhong Lin Wang
Summary: In this study, an integrated bi-functional pneumatic sensor was proposed, which utilizes friction to generate static electricity and voltage for simultaneous monitoring of position and velocity of an air cylinder. The sensor can accurately measure the rotation angle and angular velocity, enabling precise pneumatic monitoring and servo control.
Article
Chemistry, Multidisciplinary
Pengfan Wu, Fayang Wang, Shiwei Xu, Tao Liu, Youchao Qi, Xue Zhao, Chi Zhang, Xiaojing Mu
Summary: Sensors based on triboelectric nanogenerators have attracted worldwide attention due to their low cost and self-powering advantages. A highly sensitive vibration sensor based on TENG with ultrawide frequency response (HSVS-TENG) is proposed, which integrates a quasi-zero stiffness structure to optimize performance. The sensor demonstrates the ability to measure vibrations in the frequency range of 2.5 to 4000 Hz, with sensitivity ranging from 0.32 to 134.9 V g(-1). Machine-learning algorithms enable the self-powered sensor to accurately monitor the running state and fault type of key components with a recognition accuracy of 98.9%.
Article
Engineering, Environmental
Likun Gong, Zhaozheng Wang, Junqing Zhao, Jiajun Tang, Zheng Li, Weiqi Meng, Zhipeng Qiu, Yuhan Qin, Xingwei Wang, Chi Zhang, Dongzhi Zhang
Summary: This study proposes an integrated supercapacitor and humidity sensor system based on bifunctional materials. The system shows excellent performance and can be applied in various fields such as non-contact human-computer interaction, respiratory system monitoring, and hazardous environment humidity monitoring.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Likun Gong, Zhaozheng Wang, Ruifei Luan, Guoxu Liu, Beibei Fan, Yuan Feng, Jie Cao, Youchao Qi, Chi Zhang, Zhi Zhang
Summary: This study proposes a competitive mechanism to determine the current direction and magnitude of silicon-based tribovoltaic nanogenerator, and explores the factors that affect its electrical output stability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
