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http://hdl.handle.net/10397/88865
Title: | Enhancing the performance of a stretchable and transparent triboelectric nanogenerator by optimizing the hydrogel ionic electrode property | Authors: | Jing, X Li, H Mi, HY Feng, PY Tao, X Liu, Y Liu, C Shen, C |
Issue Date: | 20-May-2020 | Source: | ACS applied materials and interfaces, 20 May 2020, v. 12, no. 20, p. 23474-23483 | Abstract: | 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/m2 on a 4.7 Mω external resistor. The H-TENG could easily light 240 green and blue LEDs simultaneously and demonstrated capability to power small electronics, such as a digital timer and pedometer. This study provides insights into the influence of hydrogel property on H-TENG performance and gives guidance for designing and fabricating highly stretchable and transparent TENGs. | Keywords: | Dual network Energy harvesting Hydrogel Triboelectric nanogenerator Viscoelasticity |
Publisher: | American Chemical Society | Journal: | ACS applied materials and interfaces | ISSN: | 1944-8244 | EISSN: | 1944-8252 | DOI: | 10.1021/acsami.0c04219 | Rights: | © 2020 American Chemical Society This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://dx.doi.org/10.1021/acsami.0c04219. |
Appears in Collections: | Journal/Magazine Article |
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Jing_Stretchable_Transparent_Triboelectric.pdf | Pre-Published version | 2.79 MB | Adobe PDF | View/Open |
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