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Title: Highly stretchable, elastic, and ionic conductive hydrogel for artificial soft electronics
Authors: Zhou, Yang
Wan, Changjin
Yang, Yongsheng
Yang, Hui
Wang, Shancheng
Dai, Zhendong
Ji, Keju
Jiang, Hui
Chen, Xiaodong
Long, Yi
Keywords: Engineering::Materials
Issue Date: 2019
Source: Zhou, Y., Wan, C., Yang, Y., Yang, H., Wang, S., Dai, Z., . . ., Long, Y. (2018). Highly stretchable, elastic, and ionic conductive hydrogel for artificial soft electronics. Advanced Functional Materials, 29(1), 1806220-. doi:10.1002/adfm.201806220
Journal: Advanced Functional Materials
Abstract: High conductivity, large mechanical strength, and elongation are important parameters for soft electronic applications. However, it is difficult to find a material with balanced electronic and mechanical performance. Here, a simple method is developed to introduce ion-rich pores into strong hydrogel matrix and fabricate a novel ionic conductive hydrogel with a high level of electronic and mechanical properties. The proposed ionic conductive hydrogel is achieved by physically cross-linking the tough biocompatible polyvinyl alcohol (PVA) gel as the matrix and embedding hydroxypropyl cellulose (HPC) biopolymer fibers inside matrix followed by salt solution soaking. The wrinkle and dense structure induced by salting in PVA matrix provides large stress (1.3 MPa) and strain (975%). The well-distributed porous structure as well as ion migration–facilitated ion-rich environment generated by embedded HPC fibers dramatically enhances ionic conductivity (up to 3.4 S m −1 , at f = 1 MHz). The conductive hybrid hydrogel can work as an artificial nerve in a 3D printed robotic hand, allowing passing of stable and tunable electrical signals and full recovery under robotic hand finger movements. This natural rubber-like ionic conductive hydrogel has a promising application in artificial flexible electronics.
ISSN: 1616-301X
DOI: 10.1002/adfm.201806220
Rights: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. This paper was published in Advanced Functional Materials and is made available with permission of WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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