Environmentally Friendly Hydrogel-Based Triboelectric Nanogenerators for Versatile Energy Harvesting and Self-Powered Sensors

Wei Xu, Long Biao Huang, Man Chung Wong, Li Chen, Gongxun Bai, Jianhua Hao*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    114 Scopus citations

    Abstract

    Triboelectric nanogenerators (TENGs), as a promising energy harvesting technology, have been rapidly developed in recent years. However, the research based on fully flexible and environmentally friendly TENGs is still limited. Herein, for the first time, a hydrogel-based triboelectric nanogenerator (Hydrogel-TENG) with high flexibility, recyclability, and environmental friendliness simultaneously has been demonstrated. The standard Hydrogel-TENG can generate a maximum output power of 2 mW at a load resistance of 10 MΩ. The tube-shaped Hydrogel-TENG can harvest mechanical energy from various human motions, including bending, twisting, and stretching. Furthermore, the system can serve as self-powered sensors to detect the human motions. Additionally, the utilized Polyvinyl Alcohol hydrogel employed in this study is recyclable to benefit for fabricating the renewable TENG. The open-circuit voltage of renewed hydrogel-TENG can reach up to 92% of the pristine output voltage. This research will pave a potential approach for the development of flexible energy sources and self-powered motion sensors in environmentally friendly way.

    Original languageEnglish (US)
    Article number1601529
    JournalAdvanced Energy Materials
    Volume7
    Issue number1
    DOIs
    StatePublished - Jan 11 2017

    Keywords

    • environmentally friendly
    • flexible
    • hydrogel
    • self-powered sensors
    • triboelectric nanogenerators

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment
    • Materials Science(all)

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