基于丝网印刷制备的导电水凝胶基可拉伸应变传感器

doi:10.11896/cldb.24010128

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Abstract With the rapid development of the field of great health, flexible electrodes have attracted much attention as the most basic functional unit on human wearable devices. However, most of the electrodes still have the characteristics of limited stretching degree and poor conductivity, which restrains their practical application. In this paper, a hydrogel-based and multi-hydrogen-bond-containing conductive ink for screen printing technology was prepared using polyvinyl alcohol (PVA) as the conductive hydrogel matrix, poly(3, 4-ethylenedioxythiophene)-poly(styrene sulfonic acid) (PEDOT:PSS) as the conductive network, water as the solvent, and tannic acid (TA) as the cross-linking agent. And a complex physical network structure was subsequently constructed using ice crystals as the templates and freeze-thaw cycling technique. Further the stretchable electrode was prepared through screen printing technique using the polydimethylsiloxane (PDMS) substrate whose surface was hydrophilically pre-modified by sodium dodecyl sulfate (SDS). The eventually produced TA-PVA/PEDOT:PSS hydrogel electrode exhibited a ultimate tensile strain of 480%. In addition, the idea of constructing this multiple hydrogen bonding system has the potential to be extended for application to other self-healing conductive hydrogel electrodes.

Key words： conductive hydrogel screen printing strain sensor freeze-thaw cycle method

Published: 10 April 2025 Online: 2025-04-10

CLC number:

TB34

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	Articles by authors
	ZHU Wenhu
	SUN Fenglin
	WANG Rong
	JOO SangWoo
	CONG Chenhao
	LI Xinlin

Cite this article:

ZHU Wenhu,SUN Fenglin,WANG Rong, et al. Screen-printed Conductive Hydrogel-based Stretchable Strain Sensors[J]. Materials Reports, 2025, 39(7): 24010128-6.

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https://www.mater-rep.com/EN/10.11896/cldb.24010128 OR https://www.mater-rep.com/EN/Y2025/V39/I7/24010128

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