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Research Article

Stretchable iontronics with robust interface bonding between dielectric and ion-conducting elastomers

Zhongpeng Li1,2Panpan Zhang2( )Yangshi Shao2,3Zi-Hao Guo2,3Xiong Pu1,2,3( )
School of Chemistry and Chemical Engineering, Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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Graphical Abstract

Ion-conducting elastomer with a dynamic cross-linked structure based on polydimethylsiloxane (PDMS) is reported. A robust interface bonding can generate between the ion-conducting elastomers and the dielectric material. Two stretchable iontronic devices (triboelectric nanogenerator and pressure sensors) are then realized.

Abstract

Dry ion-conducting elastomers (ICEs) are emerging stretchable and ionic conductive materials that are demonstrated with excellent thermal stability and great promise in multifunctional iontronic devices. Nevertheless, the poor interface between the ICEs and the dielectric material is one of the issues hindering the application of the stretchable iontronic device. Herein, a polydimethylsiloxane (PDMS) based ion-conducting elastomer with dynamic crosslinking structures is reported, which achieves the stretchability of 475% and healing efficiency of 99%. More importantly, a robust interface bonding can be generated between the electrode and the dielectric material, which is beneficial to enhance the performance and lifespan of the flexible iontronic devices. Using this PDMS based ICE as the electrode and PDMS as the dielectric material, two stretchable iontronic devices (triboelectric nanogenerator and capacitive pressure sensor) are realized with overall self-healing and stretchable capabilities. These findings provide a promising strategy to achieve integrate stretchable iontronics or electronics with a robust interface between the electrode and dielectric materials.

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Nano Research
Pages 11862-11870
Cite this article:
Li Z, Zhang P, Shao Y, et al. Stretchable iontronics with robust interface bonding between dielectric and ion-conducting elastomers. Nano Research, 2023, 16(9): 11862-11870. https://doi.org/10.1007/s12274-023-5612-3
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Received: 08 December 2022
Revised: 22 February 2023
Accepted: 23 February 2023
Published: 26 March 2023
© Tsinghua University Press 2023
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