Embedding variable micro-capacitors in polydimethylsiloxane for enhancing output power of triboelectric nanogenerator
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- 作者：Xiaona Xia ; Jie Chen ; Hengyu Guo ; Guanlin Liu ; Dapeng Wei ; Yi Xi ; Xue Wang…
- 关键词：cellular structure ; polydimethylsiloxane ; silver nanoparticles ; variable micro ; capacitor
- 刊名：Nano Research
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：10
- 期：1
- 页码：320-330
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Nanotechnology; Materials Science, general; Atomic/Molecular Structure and Spectra; Condensed Matter Physics; Biotechnology; Biomedicine, general;
- 出版者：Tsinghua University Press
- ISSN：1998-0000
- 卷排序：10
文摘
Polydimethylsiloxane (PDMS) is an excellent material for investigating the mechanism of triboelectricity as it can easily be used to construct various microstructures. In this study, micro-capacitors (MCs) and variable microcapacitors (VMCs) were embedded in PDMS by filling PDMS with silver nanoparticles (NPs) and constructing an internal cellular structure. The output performance of the triboelectric nanogenerators (TENGs) based on MCs@PDMS and VMCs@PDMS films was systematically investigated, with variation of the filling content of silver NPs and the pore ratio and size. The microstructure, permittivity, dielectric loss, and capacitance of the VMCs@PDMS films were well characterized. The output current of the TENG based on the VMCs@PDMS film was respectively 4.0 and 1.6 times higher than that of the TENGs based on the pure PDMS film and MCs@PDMS film, and the output power density of the former reached 6 W·m–2. This study sheds light on the physical nature of conductive nanoparticle fillings and cellular structures in dielectric triboelectric polymers.