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Direct-Current Triboelectric Nanogenerator Realized by Air Breakdown Induced Ionized Air Channel

机译：空气击穿诱导电离空气通道实现直流摩擦纳米发电机

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摘要

The air breakdown phenomenon is generally considered as a negative effect in previous research on triboelectric nanogenerators (TENGs), which is always accompanied by air ionization. Here, by utilizing the air breakdown induced ionized air channel, a direct-current triboelectric nanogenerator (DC-TENG) is designed for harvesting contact-separation mechanical energy. During working process, the charges first transfer from bottom to top electrodes through an external circuit in contact state, then flow back via the ionized air channel created by air breakdown in the separation process. So a unidirectional flow of electrical charges can be observed in the external circuit. With repeating contact-separation cycles, continuous pulsed DC output through the external circuit can be realized. This working mechanism was verified by real-time electrode potential monitoring, photocurrent signal detection, and controllable discharging observation. The DC-TENG can be used for directly and continuously charging an energy storage unit and/or driving electronic devices without using a bridge rectifier. Owing to its simplicity in structure, the mechanism is further applied to fabricate the first flexible DC-TENG. This research provides a significant fundamental study for DC-TENG technology and may expand its application in flexible electronics and flexible self-charging power systems.
机译：在以前对摩擦电纳米发电机（TENGs）的研究中，空气击穿现象通常被认为是负面影响，该现象总是伴随着空气电离。在这里，通过利用空气击穿引起的电离空气通道，设计了直流摩擦纳米发电机（DC-TENG）来收集接触分离的机械能。在工作过程中，电荷首先通过处于接触状态的外部电路从底部电极转移到顶部电极，然后通过分离过程中空气击穿产生的电离空气通道回流。因此，可以在外部电路中观察到单向电荷流。通过重复触点分离循环，可以实现通过外部电路的连续脉冲直流输出。通过实时电极电位监测，光电流信号检测和可控的放电观察验证了该工作机制。 DC-TENG可用于直接和连续给储能单元充电和/或驱动电子设备，而无需使用桥式整流器。由于其结构简单，该机构被进一步应用于制造第一柔性DC-TENG。这项研究为DC-TENG技术提供了重要的基础研究，并可能扩展其在柔性电子产品和柔性自充电电源系统中的应用。

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  • 来源
    《Advanced energy materials》 |2018年第27期|1800889.1-1800889.8|共8页
  • 作者

    Luo Jianjun; Xu Liang; Tang Wei; Jiang Tao; Fan Feng Ru; Pang Yaokun; Chen Libo; Zhang Yan; Wang Zhong Lin;

  • 作者单位

    Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing Key Lab Micronano Energy & Sensor, CAS Ctr Excellence Nanosci, Beijing 100083, Peoples R China;

    Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing Key Lab Micronano Energy & Sensor, CAS Ctr Excellence Nanosci, Beijing 100083, Peoples R China;

    Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing Key Lab Micronano Energy & Sensor, CAS Ctr Excellence Nanosci, Beijing 100083, Peoples R China;

    Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing Key Lab Micronano Energy & Sensor, CAS Ctr Excellence Nanosci, Beijing 100083, Peoples R China;

    Univ Calif Santa Barbara, Dept Chem & Biochem, Santa Barbara, CA 93106 USA;

    Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing Key Lab Micronano Energy & Sensor, CAS Ctr Excellence Nanosci, Beijing 100083, Peoples R China;

    Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing Key Lab Micronano Energy & Sensor, CAS Ctr Excellence Nanosci, Beijing 100083, Peoples R China;

    Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing Key Lab Micronano Energy & Sensor, CAS Ctr Excellence Nanosci, Beijing 100083, Peoples R China;

    Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing Key Lab Micronano Energy & Sensor, CAS Ctr Excellence Nanosci, Beijing 100083, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    air breakdown; direct current; ionized air channel; triboelectric nanogenerators;

    机译：空气击穿;直流电;电离空气通道;摩擦电纳米发电机;

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