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author:

Chen, Hongjie (Chen, Hongjie.) [1] | Huang, Jianren (Huang, Jianren.) [2] | Liu, Jiantao (Liu, Jiantao.) [3] | Gu, Jianfeng (Gu, Jianfeng.) [4] | Zhu, Jundong (Zhu, Jundong.) [5] | Huang, Bing (Huang, Bing.) [6] | Bai, Jin (Bai, Jin.) [7] | Guo, Jinquan (Guo, Jinquan.) [8] | Yang, Xiaoxiang (Yang, Xiaoxiang.) [9] | Guan, Lunhui (Guan, Lunhui.) [10]

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EI

Abstract:

The conductive hydrogel has shown extensive applications in multifunctional sensors. However, the intrinsic characteristics of conductive hydrogels, such as lacking anti-freezing, mechanical strength, and being easily dehydrated have hindered their application in wearable devices. Herein, reduced graphene oxide (rGO) and graphene oxide (GO) nanosheets were incorporated into a porous cross-linking poly(vinyl alcohol) (PVA) hydrogel network within dimethyl sulfoxide (DMSO)/H2O binary solvent. A honeycomb-like dense micro-network and uniform dispersion conductive tough fillers endow high toughness (3.1 MPa @ 600% strain) and conductivity to the organohydrogel. With the intense interaction between water and DMSO, the organohydrogel exhibits reliable mechanical and electronic performance in a wide range of temperatures (-30 to 60 °C) and possesses excellent ambient stability. The organohydrogel had excellent sensitivity and linear repeatable response ability in both mechanical and thermal stimulation. With the integrated unique features, the sensitive organohydrogel was developed for a multifunctional sensor. As a strain/pressure sensor, it exhibited a sensitive response to the applied tensile or compressed strain with repeatability and durability. As a temperature sensor, it presented excellent linear and reliable thermal response with a high sensing accuracy. This work provides a new paradigm for designing a wearable multifunctional sensor or E-skin, which is used to detect the motion or temperature of the human in the future. © 2021 The Royal Society of Chemistry.

Keyword:

Dimethyl sulfoxide Graphene Hydrogels Organic solvents Polyvinyl alcohols Temperature sensors Wearable sensors

Community:

  • [ 1 ] [Chen, Hongjie]School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou; 350108, China
  • [ 2 ] [Chen, Hongjie]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou; 350002, China
  • [ 3 ] [Huang, Jianren]School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou; 350108, China
  • [ 4 ] [Huang, Jianren]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou; 350002, China
  • [ 5 ] [Liu, Jiantao]School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou; 350108, China
  • [ 6 ] [Gu, Jianfeng]College of Chemical Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 7 ] [Zhu, Jundong]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou; 350002, China
  • [ 8 ] [Huang, Bing]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou; 350002, China
  • [ 9 ] [Bai, Jin]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou; 350002, China
  • [ 10 ] [Guo, Jinquan]School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou; 350108, China
  • [ 11 ] [Yang, Xiaoxiang]School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou; 350108, China
  • [ 12 ] [Guan, Lunhui]CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou; 350002, China

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Source :

Journal of Materials Chemistry A

ISSN: 2050-7488

Year: 2021

Issue: 40

Volume: 9

Page: 23243-23255

1 4 . 5 1 1

JCR@2021

1 0 . 8 0 0

JCR@2023

ESI HC Threshold:142

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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