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

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• 作者：Wei Xu ; Long-Biao Huang ; Man-Chung Wong ; Li Chen ; Gongxun Bai and Jianhua Hao
• 刊名：Advanced Energy Materials
• 出版年：2017
• 出版时间：January 11, 2017
• 年：2017
• 卷：7
• 期：1
• 全文大小：2448K
• ISSN：1614-6840

文摘

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.