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

Author

Listed:
  • Wenlin Liu

    (Chongqing University)

  • Zhao Wang

    (Chongqing University)

  • Gao Wang

    (Chongqing University)

  • Qixuan Zeng

    (Chongqing University)

  • Wencong He

    (Chongqing University)

  • Liyu Liu

    (Chongqing University)

  • Xue Wang

    (Chongqing University)

  • Yi Xi

    (Chongqing University)

  • Hengyu Guo

    (Chongqing University
    Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences
    School of Materials Science and Engineering, Georgia Institute of Technology)

  • Chenguo Hu

    (Chongqing University)

  • Zhong Lin Wang

    (Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences
    School of Materials Science and Engineering, Georgia Institute of Technology)

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.

Suggested Citation

  • Wenlin Liu & Zhao Wang & Gao Wang & Qixuan Zeng & Wencong He & Liyu Liu & Xue Wang & Yi Xi & Hengyu Guo & Chenguo Hu & Zhong Lin Wang, 2020. "Switched-capacitor-convertors based on fractal design for output power management of triboelectric nanogenerator," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15373-y
    DOI: 10.1038/s41467-020-15373-y
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    Cited by:

    1. Xin Xia & Ziqing Zhou & Yinghui Shang & Yong Yang & Yunlong Zi, 2023. "Metallic glass-based triboelectric nanogenerators," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Zhou, Han & Liu, Guoxu & Bu, Tianzhao & Wang, Zheng & Cao, Jie & Wang, Zhaozheng & Zhang, Zhi & Dong, Sicheng & Zeng, Jianhua & Cao, Xiaoxin & Zhang, Chi, 2024. "Autonomous cantilever buck switch for ultra-efficient power management of triboelectric nanogenerator," Applied Energy, Elsevier, vol. 357(C).
    3. Huiyuan Wu & Chuncai Shan & Shaoke Fu & Kaixian Li & Jian Wang & Shuyan Xu & Gui Li & Qionghua Zhao & Hengyu Guo & Chenguo Hu, 2024. "Efficient energy conversion mechanism and energy storage strategy for triboelectric nanogenerators," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    4. Mengjiao Li & Hong-Wei Lu & Shu-Wei Wang & Rei-Ping Li & Jiann-Yeu Chen & Wen-Shuo Chuang & Feng-Shou Yang & Yen-Fu Lin & Chih-Yen Chen & Ying-Chih Lai, 2022. "Filling the gap between topological insulator nanomaterials and triboelectric nanogenerators," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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