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Stretchable and environment-resistant doubly crosslinked hydrogel for all-in-one supercapacitor and strain sensors

Journal of Materiomics 2024年第6期10卷 1186-1195页

作者： Chunlin Liu le jjiang Fenglin Zhao Qin Hu Yingge Zhang Xiaodan Sun Lianxin Peng School of Mechanical Engineering Chengdu UniversityChengdu 610106China Key Laboratory of Advanced Materials of Ministry of Education of China School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Key Laboratory of Coarse Cereal Processing of Ministry of Agriculture and Rural Affairs Chengdu UniversityChengdu 610106China

Despite their importance as components for flexible electronics,most stretchable hydrogels suffer from incomplete recovery after deformation,are prone to failure upon long-term repeated stretching,and cannot be exploited at subzero temperatures because of the freezing of their constituent ***-quently,strategies for circumventing these drawbacks are highly sought *** study describes the synthesis of a doubly(chemically and physically)crosslinked hydrogel from gelatin and methacrylic acid and demonstrates the suitability of this material for the fabrication of high-performance stretchable and environment-resistant supercapacitors and strain *** performance of this supercapacitor(areal capacitance=1,210.2 mF/cm^(2) at a current density of 1 mA/cm^(2),maximum energy density=158.8μW.h/cm^(-1),maximum power density=659.5μW/cm^(2))was superior to that of most of integrated super-capacitors reported to date and was hardly affected by stretchable,low temperatures,bending,ice-cold water and strong acid/alkali solutions or long-term ***,a strain sensor based on the above hydrogel was capable of accurately capturing human body motions when affixed to skin and recognising mouse movement(even in humid environments)after implantation into mouse *** work may pave the way to high-performance stretchable and environment-resistant wearable electronics.

关键词： Doubly crosslinked hydrogel Stretchable Environment-resistant All-in-one supercapacitor Strain sensor

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