Enhancing the Performance of a Stretchable and Transparent Triboelectric Nanogenerator by Optimizing the Hydrogel Ionic Electrode Property
| Autor: | Xin Jing, Heng Li, Pei Yong Feng, Chuntai Liu, Changyu Shen, Xiaoming Tao, Yuejun Liu, Hao-Yang Mi |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Nanogenerator Dual network Ionic bonding Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Electrode General Materials Science 0210 nano-technology Energy harvesting Triboelectric effect |
| Zdroj: | ACS applied materialsinterfaces. 12(20) |
| ISSN: | 1944-8252 |
| Popis: | Triboelectric nanogenerators (TENGs) with high transparency and stretchability are desired for invisible and adaptable energy harvesting and sensing. Hydrogel-based TENGs (H-TENG) have shown promising attributes toward flexible and transparent devices. However, the effect of hydrogel property on the triboelectric performance of H-TENG is rarely investigated. Herein, dual-network hydrogels composed of dual-cross-linked poly(vinyl alcohol) (PVA) and sodium alginate (SA) were synthesized and used as ionic electrodes in H-TENGs. The elasticity of the hydrogel was controlled by varying the concentration of SA, and the distinct influence of hydrogel viscoelastic property on H-TENG performance was verified for the first time. By tuning the conductivity and viscoelasticity of PVA/SA hydrogel, the optimum H-TENG exhibited high transparency (over 90%) and stretchability (over 250%) and peak output voltage and current of 203.4 V and 17.6 μA, respectively. A specially designed polydimethylsiloxane (PDMS) bag effectively prevents hydrogel dehydration and maintains a stable output in continuous operation. The H-TENG achieved a power density of 0.98 W/m |
| Databáze: | OpenAIRE |
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