Issue 29, 2022

Stretchable, conductive and porous MXene-based multilevel structured fibers for sensitive strain sensing and gas sensing

Abstract

Stretchable and conductive fibers are ideal for wearable intelligent electronics, especially wearable strain sensors. However, two main challenges strictly restrict the advancement of wearable strain sensors: the contradiction between sensitivity and sensing range and the trade-off between conductivity and mechanical properties. Herein, we design a multilevel structured fiber to address these two issues. The fiber contains a porous sensing core with MXene coated microspheres distributed in the elastic matrix (level I) and a microstructured MXene sheath with cracks (level II) embedded in wrinkle (level III) patterns. These multiple sensing levels could synergistically respond to different magnitudes of tensile strains, thus rendering high sensitivity (from 174 to 298 000) across a wide sensing range (0–150%). In addition, the macropores within the fiber core and the wrinkle patterns in the sheath offer the sensing fiber high stretchability (∼1000%) and a low modulus (7.6 MPa) similar to pure PU together with a high electrical conductivity. Along with strain sensing, this fiber is also suitable for some other applications, such as gas sensing, due to its combined high conductivity and large specific surface area. The structure design strategy presented in this study could guide future work in developing strain sensitive nanomaterials.

Graphical abstract: Stretchable, conductive and porous MXene-based multilevel structured fibers for sensitive strain sensing and gas sensing

Supplementary files

Article information

Article type
Paper
Submitted
14 Apr 2022
Accepted
28 Jun 2022
First published
29 Jun 2022

J. Mater. Chem. A, 2022,10, 15634-15646

Stretchable, conductive and porous MXene-based multilevel structured fibers for sensitive strain sensing and gas sensing

Q. Guo, W. Pang, X. Xie, Y. Xu and W. Yuan, J. Mater. Chem. A, 2022, 10, 15634 DOI: 10.1039/D2TA02998G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements