Ultradurable, freeze-resistant, and healable MXene-based ionic gels for multi-functional electronic skin

Yao Lu, Xinyu Qu, Siying Wang, Ye Zhao, Yanfang Ren, Wenli Zhao, Qian Wang*, Chencheng Sun*, Wenjun Wang, Xiaochen Dong*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


Hydrogel is a potential matrix material of electronic-skins (E-skins) because of its excellent ductility, tunability, and biocompatibility. However, hydrogel-based E-Skins will inevitably lose their sensing performance in practical applications for water loss, physical damage, and ambient interferences. It remains a challenge to manufacture highly durable gel-based E-skins. Herein, an E-Skin is fabricated by introducing ionic liquids (ILs) into MXene-composited binary polymer network. The obtained ionic gel shows excellent mechanical properties, strong adhesion, and superior tolerance to harsh environments. The E-skin exhibits high sensitivity to both strain and pressure in a wide range of deformations, which enables a monitoring function for various human motions and physiological activities. Importantly, the E-skin shows consistent electrical response after being stored in the open air for 30 days and can be quickly healed by irradiation with 808 nm near-infrared light, originating from the photo-thermal effect induced self-healing acceleration. It is noteworthy that the E-skin also reveals a highly sensitive perception of temperature and near-infrared light, displaying the promising potential applications in the multifunctional flexible sensor. [Figure not available: see fulltext.].

Original languageEnglish (US)
Pages (from-to)4421-4430
Number of pages10
JournalNano Research
Issue number5
StatePublished - May 2022

Bibliographical note

Funding Information:
The work was supported by Jiangsu Province Policy Guidance Plan (No. BZ2019014), NSF of Jiangsu Province (BK20190688), NSF of the Jiangsu Higher Education Institutions (21KJB430039), and ‘Taishan scholars’ construction special fund of Shandong Province.

Publisher Copyright:
© 2021, Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature.


  • E-skins
  • environment resistance
  • flexible sensor
  • MXene
  • photothermal effect

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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