Kirigami‐Inspired 3D‐Printable MXene Organohydrogels for Soft Electronics

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(52)

Published: Sept. 15, 2023

Abstract Conductive hydrogels are compelling materials for the development of soft electronics; however, their essential attributes such as high sensitivity, excellent stretchability, and environmental stability have rarely been achieved simultaneously in one hydrogel. Herein, a Kirigami‐inspired strategy is proposed to improve organohydrogel sensitivity without sacrificing mechanical stretchability . The organohydrogels with multiple interpenetrating networks synthesized by introducing sodium alginate nanofibrils conductive MXene nanoflakes into polymer double infiltrated glycerol–water mixtures, featuring remarkable (>5000%), good water retention (>30 days). Kirigami structures further applied enhance strain achieving gauge factor 29.1, which ≈5.5 times that an unstructured organohydrogel. Using sensors, durable glove developed grabbing underwater objects through operating robotic arm, demonstrating subaqueous interactive human–machine interfacing.Meanwhile, integrating wearable sensor machine learning algorithm, Morse code intelligent recognition system demonstrated, enabling real‐time conversion signs speech superior accuracy (>99%) fast response time (≈17 ms). This work offers new route synthesize highly sensitive, stretchable, extremely tolerant organohydrogels, providing promising platform next‐generation electronics.

Language: Английский

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TEMPO bacterial cellulose and MXene nanosheets synergistically promote tough hydrogels for intelligent wearable human-machine interaction

Carbohydrate Polymers, Journal Year: 2023, Volume and Issue: 326, P. 121621 - 121621

Published: Nov. 24, 2023

Language: Английский

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Multifunctional Filler‐Free PEDOT:PSS Hydrogels with Ultrahigh Electrical Conductivity Induced by Lewis‐Acid‐Promoted Ion Exchange

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(33)

Published: June 25, 2023

Abstract Highly conductive hydrogels with biotissue‐like mechanical properties are of great interest in the emerging field hydrogel bioelectronics due to their good biocompatibility, deformability, and stability. Fully polymeric may exhibit comparable Young's modulus biotissues. However, most these filler‐free have a low electrical conductivity <10 S cm −1 , which limits wide applications them digital circuits or bioelectronic devices. In this work, series metal‐halides‐doped poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) an ultrahigh up 547 is reported, 1.5 times 10 4 higher than previously reported hydrogels. Theoretical calculation demonstrated that ion exchange between PEDOT:PSS metal halides played important role promote phase separation hydrogels, thus leads conductivity. The high resulted multifunctional performance thermoelectrics, electromagnetic shielding, Joule heating, sensing. Such flexible stretchable stability upon various deformations promising for soft devices wearable electronics.

Language: Английский

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Hydrogel Electrolyte Enabled High‐Performance Flexible Aqueous Zinc Ion Energy Storage Systems toward Wearable Electronics

Small, Journal Year: 2023, Volume and Issue: 19(48)

Published: Aug. 2, 2023

To cater to the swift advance of flexible wearable electronics, there is growing demand for energy storage system (ESS). Aqueous zinc ion systems (AZIESSs), characterizing safety and low cost, are competitive candidates storage. Hydrogels, as quasi-solid substances, appropriate burgeoning electrolytes that enable high-performance AZIESSs. However, challenges still remain in designing suitable comprehensive hydrogel electrolyte, which provides AZIESSs with high reversibility versatility. Hence, application electrolyte-based electronics restricted. A thorough review required electrolyte design pave way This delves into engineering desirable from perspective designers. Detailed descriptions basic characteristics, Zn anode, cathode stabilization effects well their functional properties provided. Moreover, discussed, expecting accelerate strides toward lives. Finally, corresponding future development trends also presented, hope inspiring readers.

Language: Английский

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Tough adhesion enhancing strategies for injectable hydrogel adhesives in biomedical applications

Advances in Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 319, P. 102982 - 102982

Published: Aug. 13, 2023

Language: Английский

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