4.8 Article

Stretching-insensitive stretchable and biocompatible triboelectric nanogenerators using plasticized PVC gel and graphene electrode for body-integrated touch sensor

期刊

NANO ENERGY
卷 107, 期 -, 页码 -

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ELSEVIER
DOI: 10.1016/j.nanoen.2022.108159

关键词

Stretching -insensitive; Stretchable triboelectric nanogenerator; Polyvinyl chloride gel; Graphene; Biocompatible

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Sandwich-like TENG components including PVC gel and graphene electrode are fabricated, which show excellent electrical outputs and stretchability. These stretchable and biocompatible TENGs have the potential to be integrated into the human body as self-powered touch sensors.
Triboelectric nanogenerators (TENG) can generate strong electrical signals even with low frequencies and weak forces, thus research has been conducted to use them as wearable, body-attachable, and body-embeddable devices using biomechanical energies. For this reason, the TENG components, such as dielectric materials and electrodes, should be stretchable. A stretchable and biocompatible single electrode TENG based on plasticized polyvinyl chloride (PVC) gel with a graphene electrode is fabricated. PVC gel is a suitable stretchable TENG dielectric material owing to its high stretchability, dielectric constant, and tribo-negative properties, and graphene is a highly conductive electrode. Graphene and PVC gel-based stretchable and biocompatible TENGs display excellent electrical outputs (48 V, 2.5 mu A, and 0.49 W/m2). The electrical resistance range of the electrode which does not affect the TENG output performance, and a stretching-insensitive TENG with approximately 50% stretching rate is successfully demonstrated through this study. In addition, both PVC gel and graphene are biocompatible. These stretching-insensitive and biocompatible TENGs may be used as a self-powered touch sensor that can be integrated into the human body.

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