Coupling electrostatic induction and global electron circulation for constant-current triboelectric nanogenerators
Autor: | Weng Yalian, Chaoxing Wu, Kun Wang, Tae Whan Kim, Guixiong Chen, Ye Liu, Jaehyeon Park, Jiaxin Wang, Tailiang Guo, Zhirong Qiu, Xiongtu Zhou, Yongai Zhang |
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Rok vydání: | 2021 |
Předmět: |
Coupling
Materials science Renewable Energy Sustainability and the Environment Oscillation business.industry Nanogenerator 02 engineering and technology Electron Electrostatic induction 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Electrode Optoelectronics Constant current General Materials Science Electrical and Electronic Engineering 0210 nano-technology business Triboelectric effect |
Zdroj: | Nano Energy. 85:105929 |
ISSN: | 2211-2855 |
DOI: | 10.1016/j.nanoen.2021.105929 |
Popis: | Obtaining direct-current (DC) output is important to triboelectric nanogenerator (TENG) technology. The working mechanism of a TENG is a fixed number of electrons periodically oscillating between electrodes through a load circuit. For most DC-TENGs, unipolar output is realized by using local-rectification, which is introducing rectifying devices to the load circuit, and the essence of periodical electron oscillation between electrodes is not changed. In this work, a constant-current TENG with global electron-circulation is demonstrated. The basic unit of our TENG only consists of a metal induction layer (MIL) connected with an electronic load through two rectified PN-junctions. The MIL-load loop is in an electric neutrality state. The force driving the global electron-circulation in the MIL-load loop is the electrostatic force introduced from an external position-variable charged layer. The periodic motion of the charged layer leads to a unidirectional electron-circulation in the MIL-load loop. A stable constant current can be obtained by increasing the number of parallel MIL units. This constant-current TENG can be used to directly drive LEDs without flicker and to directly drive electronic devices. Because no contact is made between the charged layer and the MIL units, the operational life of the TENG is effectively extended. |
Databáze: | OpenAIRE |
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