An Eco-friendly Porous Nanocomposite Fabric-Based Triboelectric Nanogenerator for Efficient Energy Harvesting and Motion Sensing
| Autor: | Jiecong Li, Jing Wang, Zhang Yao, Jingjing Zhu, Can Gao, Zhiqing Bai, Yunlong Xu, Jiansheng Guo |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Surface Properties Wearable computer Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Nanocomposites law.invention Wearable Electronic Devices law Humans General Materials Science Particle Size Triboelectric effect Monitoring Physiologic Nanocomposite Nanogenerator 021001 nanoscience & nanotechnology Environmentally friendly Casting 0104 chemical sciences Capacitor 0210 nano-technology Porosity Efficient energy use |
| Zdroj: | ACS Applied Materials & Interfaces. 12:42880-42890 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.0c12709 |
| Popis: | A wearable and effective tribopositive material, especially an economical and eco-friendly triboelectric fabric developed from biomaterials, is highly crucial for the development of green wearable triboelectric nanogenerators. In this work, we design a porous nanocomposite fabric (PNF) with strong charge accumulation capacity through a facile dry-casting method and use it as a tribopositive material to construct attractive wearable triboelectric nanogenerators (abbreviated as TENGs). Specifically, the porous nanocomposite is developed by the incorporation of nano-Al2O3 fillers into cellulose acetate networks. By adjusting the concentration of casting solution and the content of nano-Al2O3 fillers, we systematically engineer the physical properties of the PNF for obtaining a large triboelectric charge yield. When a 10 wt % solution concentration and 10 wt % nanofiller content are adopted for the PNF, the corresponding PNF-TENG can deliver an electrical performance of ∼2.5 mW/cm2 on a 0.8 MΩ external resistor. This remarkable output can be ascribed to the synergistic effect between the appropriate porous network and improved dielectric properties of the nanocomposite. Moreover, the PNF-TENG also exhibits good reliable electrical outputs under multiple stain-washing measurements or after experiencing cyclical contact-separation 13,500 times. Also, the device is capable of charging various capacitors, lighting LED arrays, and driving commercial wrist watches and is proven to be an efficient and reliable green wearable power source. Furthermore, a PNF-TENG-based elbow supporter and a grip ball, as self-powered sensors, are proposed to realize real-time detection for human actions during sports exercise. This work proposes an eco-friendly nanocomposite fabric as an effective tribopositive material, verifies the feasibility of developing environmentally friendly wearable power sources and sensors, and provides new insights into the design of green wearable triboelectric nanogenerators. |
| Databáze: | OpenAIRE |
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