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Highly efficient self-healable and dual responsive hydrogel-based deformable triboelectric nanogenerators for wearable electronics

Abstract

Self-healable soft conductors, which can withstand certain degrees of deformation and can recover from damage spontaneously, are essential for wearable applications. In this work, a soft hydrogel based self-healing triboelectric nanogenerator (HS-TENG), which is highly deformable, both mechanically and electrically self-healable, has been successfully fabricated from poly(vinyl alcohol)/agarose hydrogel. The incorporation of photothermic-active polydopamine particle and multiwalled carbon nanotube (MWCNT) allows the HS-TENG to be physically self-healed in ~1 min upon the exposure of near-infrared (NIR) light. At the same time, the chemical self-healing of HS-TENG can be triggered by water spraying at 25 °C when introducing water-active dynamic borate bond into hydrogel. The applicability of HS-TENG as a soft energy device to harvest human motion energies has been demonstrated. By tapping the HS-TENG with various deformation, the rectified electricity can charge commercial LEDs with sustainable energy. Working at single-electrode mode, the electrical outputs of HS-TENG in terms of short-circuit transferred charge (Qsc), open circuit voltage (Voc) and short-circuit current (Isc) reach ~32 nC, ~95 V and ~1.5 µA, and keep stable even with 200% strain since MWCNTs disperse evenly in matrix and play the role of conductive fillers for HS-TENG.

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Publication details

The article was received on 12 Mar 2019, accepted on 08 Apr 2019 and first published on 08 Apr 2019


Article type: Paper
DOI: 10.1039/C9TA02711D
Citation: J. Mater. Chem. A, 2019, Accepted Manuscript

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    Highly efficient self-healable and dual responsive hydrogel-based deformable triboelectric nanogenerators for wearable electronics

    Q. Guan, G. Lin, Y. Gong, J. Wang, W. Tan, D. Bao, Y. Liu, Z. You, X. Sun, Z. Wen and Y. Pan, J. Mater. Chem. A, 2019, Accepted Manuscript , DOI: 10.1039/C9TA02711D

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