Super Stretchable Gelatin/Poly (ionic liquid) Hydrogel Enabled by Weak Hydrogen Bonds and Microphase Separation towards Multifunctional and Self-powered Sensors

IF 16.8 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Nano Energy Pub Date : 2025-03-15 DOI:10.1016/j.nanoen.2025.110875
Linbin Li, Xuechuan Wang, Xiangyu You, Ping Rao, Xinhua Liu, Dantong Zhang, Wenlong Zhang, Wei Wang, Long Xing, Ji Li, Hui Jie Zhang
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Abstract

The development of conductive hydrogels with high stretchability, anti-crack propagation, stability in aqueous environments, anti-freezing capabilities, and ionic conductivity is important for wearable electronics, such as motion, health monitoring sensors and flexible power generators. However, achieving these combined properties of hydrogel remains challenging. This study introduces an ultra-stretchable conductive hydrogel synthesized via one-pot polymerization composed of gelatin and poly (ionic liquid) (GAHT hydrogel). The GAHT hydrogel exhibits a bicontinuous phase-separated structure at nano scale with multiple physical bonds, which confers GAHT exceptional stretchability (up to ~4000% tensile strain) and high toughness, with a fracture energy of 5461.41 J/m2 and anti-swelling property. Additionally, the ionic liquid component imparts excellent anti-freeze properties (functional down to -30 °C), conductivity (1.70 S/m), and antibacterial efficacy, with over 97% activity against E. coli and S. aureus. Based on the excellent properties of the GAHT conductive hydrogel, the amphibious strain sensors, temperature sensors, and triboelectric nanogenerators developed from the GAHT hydrogel exhibit outstanding cyclic stability and a broad range of applicable environments. In conclusion, these multifunctional properties make GAHT hydrogel a promising candidate material for highly stretchable wearable sensors, health and sports monitoring devices, underwater communication, and electric generator.

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来源期刊
Nano Energy
Nano Energy CHEMISTRY, PHYSICAL-NANOSCIENCE & NANOTECHNOLOGY
CiteScore
30.30
自引率
7.40%
发文量
1207
审稿时长
23 days
期刊介绍: Nano Energy is a multidisciplinary, rapid-publication forum of original peer-reviewed contributions on the science and engineering of nanomaterials and nanodevices used in all forms of energy harvesting, conversion, storage, utilization and policy. Through its mixture of articles, reviews, communications, research news, and information on key developments, Nano Energy provides a comprehensive coverage of this exciting and dynamic field which joins nanoscience and nanotechnology with energy science. The journal is relevant to all those who are interested in nanomaterials solutions to the energy problem. Nano Energy publishes original experimental and theoretical research on all aspects of energy-related research which utilizes nanomaterials and nanotechnology. Manuscripts of four types are considered: review articles which inform readers of the latest research and advances in energy science; rapid communications which feature exciting research breakthroughs in the field; full-length articles which report comprehensive research developments; and news and opinions which comment on topical issues or express views on the developments in related fields.
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