Interface-engineered Ionically Conductive Polyoxometalate-based Hydrogels with High Stretchability and Notch-insensitivity for Wearable Sensors

Xiao-Jiao Shi; Yu-Bin Zhang; Na Li; Yu-Xuan Qiao; Ya Liang; Gong-Kuo Yu; Ai-Hong Su; Ze-Cheng Song; Dan-Dan Song; Ti-Feng Jiao; Zhi-Hui Qin

doi:10.1007/s10118-026-3571-3

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Interface-engineered Ionically Conductive Polyoxometalate-based Hydrogels with High Stretchability and Notch-insensitivity for Wearable Sensors

RESEARCH ARTICLE | Updated：2026-04-16

- Interface-engineered Ionically Conductive Polyoxometalate-based Hydrogels with High Stretchability and Notch-insensitivity for Wearable Sensors
- Chinese Journal of Polymer Science Vol. 44, Pages: 1-13(2026)
- Affiliations：
  
  State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Applied Chemistry, Hebei Key Laboratory of Nanobiotechnology, Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Yanshan University, Qinhuangdao 066004, China
- Author bio：
  
  tfjiao@ysu.edu.cn (T.F.J.)
  zhqin@ysu.edu.cn (Z.H.Q.)
- Funds：
- DOI：10.1007/s10118-026-3571-3
  CLC：
- Received：29 December 2025，
  
  Accepted：12 January 2026，
  
  Online First：16 April 2026，
  
  Published：2026-03
- Accepted：
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Shi, X. J.; Zhang, Y. B.; Li, N.; Qiao, Y. X.; Liang, Y.; Yu, G. K.; Su, A. H.; Song, Z. C.; Song, D. D.; Jiao, T. F.; Qin, Z. H. Interface-engineered ionically conductive polyoxometalate-based hydrogels with high stretchability and notch-insensitivity for wearable sensors. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3571-3

Xiao-Jiao Shi, Yu-Bin Zhang, Na Li, et al. Interface-engineered Ionically Conductive Polyoxometalate-based Hydrogels with High Stretchability and Notch-insensitivity for Wearable Sensors[J/OL]. Chinese Journal of Polymer Science, 2026, 441-13.
Shi, X. J.; Zhang, Y. B.; Li, N.; Qiao, Y. X.; Liang, Y.; Yu, G. K.; Su, A. H.; Song, Z. C.; Song, D. D.; Jiao, T. F.; Qin, Z. H. Interface-engineered ionically conductive polyoxometalate-based hydrogels with high stretchability and notch-insensitivity for wearable sensors. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3571-3 DOI：

Xiao-Jiao Shi, Yu-Bin Zhang, Na Li, et al. Interface-engineered Ionically Conductive Polyoxometalate-based Hydrogels with High Stretchability and Notch-insensitivity for Wearable Sensors[J/OL]. Chinese Journal of Polymer Science, 2026, 441-13. DOI： 10.1007/s10118-026-3571-3.

摘要

Abstract

The rapid advancement of wearable sensors necessitates ionically conductive hydrogels that simultaneously exhibit high stretchability

damage tolerance

and reliable adhesion. However

achieving these properties in a single material remains a significant challenge. Herein

we report an ionically conductive polyoxometalate (POM)-based hydrogel (PAA/L-arg@SIW) fabricated by incorporating L-arginine (L-arg)-modified silicotungstic acid nanocomplexes (L-arg@SIW) into a poly(acrylic acid) (PAA) network as a multifunctional dynamic crosslinker. Strong electrostatic interactions and hydrogen bonding between rigid L-arg@SIW nanoclusters and flexible PAA chains generate a three-dimensional hard-soft synergistic network

in which dynamic crosslinks preferentially rupture and re-form under mechanical loading

thereby dissipating energy and suppressing crack propagation. Consequently

the hydrogel exhibits exceptional stretchability (fracture strain

1500%)

high toughness (1483 kJ/m

)

outstanding crack resistance (fracture energy up to 6.82 kJ/m

)

and high ionic conductivity (0.15 S/m)

along with robust adhesion to diverse substrates. H

ydrogel-based sensors demonstrate high strain sensitivity (gauge factor (GF)=8.06)

fast response

and excellent cyclic stability

enabling reliable monitoring of human motion and high-fidelity acquisition of electrocardiogram (ECG) and electromyogram (EMG) signals. This study presents an effective strategy for constructing high-performance ionically conductive hydrogels for wearable sensing applications.

关键词

Keywords

references

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