Qixuan Zeng

Chongqing University

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Chenguo Hu

Chongqing University

Qian Tang

Chinese Academy of Sciences

Hengyu Guo

Chongqing University

Zhong Lin Wang

Georgia Institute of Technology

Yanlin Luo

Chongqing University

Xue Wang

Liaoning University

Wenlin Liu

Beijing Graphene Institute

Huake Yang

Chongqing University

Hongmei Yang

Chongqing University of Posts and Telecommunications

Ai Chen

Chongqing University

Cooperative Institutions

Chongqing University

Chinese Academy of Sciences

University of Chinese Academy of Sciences

Beijing Institute of Nanoenergy and Nanosystems

Peking University

University of Science and Technology Beijing

Zhengzhou University

Shanghai University

Nanjing University of Aeronautics and Astronautics

Sichuan University

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Switched-capacitor-convertors based on fractal design for output power management of triboelectric nanogenerator

Nature Communications (2020)

Wenlin Liu Zhao Wang Gao Wang Qixuan Zeng Wencong He

Abstract Owing to the advantages of integration and being magnet-free and light-weight, the switched-capacitor-convertor plays an increasing role compared to traditional transformer in some specific power supply systems. However, the high output impedance and switching loss largely reduces its power efficiency, due to imperfect topology and transistors. Herein, we propose a fractal-design based switched-capacitor-convertors with characteristics including high conversion efficiency, minimum output impedance, and electrostatic voltage applicability. As a double-function output power management system for triboelectric nanogenerators, it delivers over 67 times charge boosting and 954 W m −2 power density in pulse mode, and achieves over 94% total energy transfer efficiency in constant mode. The establishment of the fractal-design switched-capacitor-convertors provides significant guidance for the development of power management toward multi-functional output for numerous applications. The successful demonstration in triboelectric nanogenerators also declares its great potential in electric vehicles, DC micro-grids etc.

Nanogenerator

Switched capacitor

Power density

10.1038/s41467-020-15373-y

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Citations (220)

Controllable Manipulation of Large‐Volume Droplet on Non‐Slippery Surfaces Based on Triboelectric Contactless Charge Injection

Advanced Materials (2024)

Liming Tan Qixuan Zeng Fan Xu Qing Zhao Ai Chen

Controllable droplet manipulation is crucial in diverse scientific and engineering fields. Traditional electric-based methods usually rely on commercial high-voltage (HV) power sources, which are typically bulky, expensive, and potentially hazardous. The triboelectric nanogenerator (TENG) is a highly studied device that can generate HV output with limited current, showing great potential in droplet manipulation applications. However, current TENG-based approaches usually utilize traditional free-standing TENGs that produce short-pulsed alternating-current signals. This limitation hinders continuous electrostatic forces necessary for precise droplet control, leading to complex circuitry and suboptimal droplet motion control in terms of volume, distance, direction, and momentum. Here, a triboelectric contactless charge injection (TCCI) method employing a novel dual-functional triboelectric nanogenerator (DF-TENG), is proposed. The DF-TENG can produce both high voltage and constant current during unidirectional motion, enabling continuous corona discharges for contactless charge injection into the droplets. Using this method, a large-volume droplet (3000 µL) can be controlled with momentum up to 115.2 g mm s

10.1002/adma.202313878

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Citations (10)

A novel hybrid triboelectric nanogenerator based on the mutual boosting effect of electrostatic induction and electrostatic breakdown

Energy & Environmental Science (2023)

Ai Chen Qixuan Zeng Liming Tan Fan Xu Ting‐Yu Wang

A novel hybrid triboelectric nanogenerator integrating AC- and DF-triboelectric nanogenerators is developed, with a switchable dual-output feature, and the mutual boosting effect of electrostatic induction and electrostatic breakdown is identified.

Nanogenerator

Boosting

Electrostatics

Electrostatic induction

Electromagnetic induction

10.1039/d3ee01658g

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Citations (22)

A strategy to promote efficiency and durability for sliding energy harvesting by designing alternating magnetic stripe arrays in triboelectric nanogenerator

Nano Energy (2019)

Qian Tang Xianjie Pu Qixuan Zeng Hongmei Yang Jien Li

Nanogenerator

10.1016/j.nanoen.2019.104087

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Citations (69)

Transistor-like triboiontronics with record-high charge density for self-powered sensors and neurologic analogs

Device (2024)

Shaoxin Li Z. Zhang Feiyao Yang Xiang Li Puguang Peng

The transistor, as the basic unit of electronics based on von Neumann architecture, is approaching the limit of Moore's law in the era of big data. Inspired by the biological system, iontronics provides an energy-efficient architecture to transmit data. Here, we used the ubiquitous solid-liquid triboelectrification to regulate the output characteristics of iontronics and proposed transistor-like triboiontronics (TTI) by work function difference. Unlike previous studies, which scavenged induced electrostatic charges from a solid surface, the triboelectric charges of liquids were also captured here, creating a record-high charge density of 13.926 mC/m2. Gated by the water droplet, TTI's gate-tunable function holds great significance for self-powered threshold sensors with high signal-to-noise ratio and enables a neurologic circuit to control robotic movements. We envision that triboiontronics will provide a new paradigm for futuristic in-sensor computing and neuromorphic analogs.

Neuromorphic engineering

10.1016/j.device.2024.100332

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Citations (9)

A real-time, self-powered wireless pressure sensing system with efficient coupling energy harvester, sensing, and communication modules

Nano Energy (2024)

Tingyu Wang Cong Wang Qixuan Zeng Guangqin Gu Xue Wang

10.1016/j.nanoen.2024.109533

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Citations (12)

Anti-Overturning Fully Symmetrical Triboelectric Nanogenerator Based on an Elliptic Cylindrical Structure for All-Weather Blue Energy Harvesting

Nano-Micro Letters (2022)

Dujuan Tan Qixuan Zeng Xue Wang Songlei Yuan Yanlin Luo

Triboelectric nanogenerators (TENGs) have shown promising potential for large-scale blue energy harvesting. However, the lack of reasonable designs has largely hindered TENG from harvesting energy from both rough and tranquil seas. Herein, a fully symmetrical triboelectric nanogenerator based on an elliptical cylindrical structure (EC-TENG) is proposed for all-weather blue energy harvesting. The novel elliptical cylindrical shell provides a unique self-stability, high sensitivity to wave triggering, and most importantly, an anti-overturning capability for the EC-TENG. Moreover, benefiting from its internal symmetrical design, the EC-TENG can produce energy normally, even if it was overturned under a rude oscillation in the rough seas, which distinguishes this work from previous reported TENGs. The working mechanism and output performance are systematically studied. The as-fabricated EC-TENG is capable of lighting 400 light-emitting diodes and driving small electronics. More than that, an automatic monitoring system powered by the EC-TENG can also monitor the water level in real-time and provide an alarm if necessary. This work presents an innovative and reliable approach toward all-weather wave energy harvesting in actual marine environments.

Nanogenerator

Mechanical energy

Oscillation (cell signaling)

10.1007/s40820-022-00866-w

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Citations (68)

Scavenging Breeze Wind Energy (1 - 8.1 Ms-1) by Minimalist Triboelectric Nanogenerator Based on the Wake Galloping Phenomenon

SSRN Electronic Journal (2022)

Songlei Yuan Qixuan Zeng Dujuan Tan Yanlin Luo Xiaofang Zhang

Harvesting low-speed wind energy is challenging for existing technologies. In this work, we developed a wake-galloping-driven triboelectric nanogenerator (TENG) (named WG-TENG) to effectively harvest breeze wind energy when the wind speed is as low as 1 ms -1 . The unique dynamics feature of wake galloping effect enables the proposed device a simple structure (minimalist contact-separation mode), low onset wind speed, lightweight (8.5 g), easy fabrication, and good portability. The relationship between the WG-TENG output performance and its structural parameters as well as bluff body geometries has been systematically studied. Attributed to the vibration enhancement realized by the wake galloping phenomenon and high efficiency of TENG at low-frequency, the proposed harvester not only can be used to drive small electronics, but also realizes a highly sensitive real-time wind speed monitoring system. This work realizes a miniaturized and high electrical performance wind-driven TENG for practical applications.

Nanogenerator

Scavenging

10.2139/ssrn.4095865

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Citations (1)

A Multifunctional Triboelectric Nanogenerator Based on Conveyor Belt Structure for High‐Precision Vortex Detection

Advanced Materials Technologies (2020)

Huake Yang Jie Hu Hongmei Yang Wenlin Liu Zhao Wang

Abstract Vortex is one of the most common natural phenomena. However, its monitoring and measurement has always been difficult in both research and water conservancy projects. A multifunctional device is designed to detect the vortex based on the capability of a triboelectric nanogenerator (TENG), utilizing the relative motion principle of a conveyor transmission structure that is driven by the relative motion of upper and lower parts to generate electrical signals. The TENG based on a conveyor belt structure (CB‐TENG) having three electrodes can monitor the vortex in real time and measure the rotating speed of the vortex. The output time domain of different electrodes corresponds to different rotation directions; therefore, the vortex direction can be determined according to electrical signal characteristics. Additionally, the wheel speed sensor (accuracy up to 98.11%) and wind speed sensor based on CB‐TENG are fabricated and tested, which proves the feasibility and high efficiency of the scheme and demonstrates the wide application of CB‐TENG.

Nanogenerator

SIGNAL (programming language)

Belt conveyor

Conveyor belt

10.1002/admt.202000377

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Citations (6)

A teeterboard-like hybrid nanogenerator for efficient harvesting of low-frequency ocean wave energy

Nano Energy (2019)

Yan Wu Qixuan Zeng Qian Tang Wenlin Liu Guanlin Liu

Nanogenerator

Mechanical energy

10.1016/j.nanoen.2019.104205

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Citations (77)