Flexible Triboelectric Nanogenerators: Enhancement And Applications

MICRO/NANO INTEGRATED FABRICATION TECHNOLOGY AND ITS APPLICATIONS IN MICROENERGY HARVESTING(2016)

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摘要
In this chapter, the density functional theory is employed to analyze the triboelectrification effect, which reveals the underlying mechanism of the materials' abilities of capturing or losing electrons at the molecular level for the first time. Three universal approaches, including single-step plasma treatment, surface texturing- based micro-/nanohierarchical structures, and hybrid mechanisms, are proposed to enhance the output performance of triboelectric nanogenerators. In addition, the applications of triboelectric nanogenerators for self-powered sensors, commercial electronics, and biomedical microsystems are successfully demonstrated.As mentioned in Sect. 1.3.3, the output performance of triboelectric nanogenerator (TENG) has been gradually improved during the past two years, which can be used to power electronic microdevices and systems as well as low-power lamp. However, there are still great challenges for the rapid development of TENGs, and the most important two key points are fundamental principle exploration and output power density enhancement. Although the literal records of triboelectricity appeared 3000 years ago, the underlying mechanism of triboelectrification effect is still not clear. Besides, although output power of TENGs can be enhanced by enlarging size and optimizing structure, the power density still needs to be improved to meet the energy requirements of electronic devices and systems in practical applications.
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