Mechanically ductile, ionically conductive and low-temperature tolerant hydrogel enabled by high-concentration saline towards flexible strain sensor

Nano Energy, Год журнала: 2022, Номер 103, С. 107789 - 107789

Опубликована: Сен. 9, 2022

Язык: Английский

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Ultrastretchable Ionogel with Extreme Environmental Resilience through Controlled Hydration Interactions

Advanced Functional Materials, Год журнала: 2022, Номер 33(2)

Опубликована: Ноя. 3, 2022

Abstract Ionic conductive gels are widely sought after for applications that require reliable ionic conduction and mechanical performance under extreme conditions, which remains a grand challenge. To address this limitation, water‐induced hydration interactions deliberately controlled within the liquid (IL)‐based (ionogels) to achieve all‐round performance. Specifically, competitive between IL, water cellulose nanofibrils (CNF) balanced preserve nanoscale morphology of CNF while avoiding its dissolution. As result, both conductivity resultant ionogel synergistically enhanced. For instance, an ultra stretchable (up 10250 ± 412% stretchability) with high toughness (21.8 0.9 MJ m −3 ) (0.70 0.06 S −1 is achieved. Furthermore, multimodal sensing functions (strain, compression, temperature, humidity) realized by assembling as skin‐like membrane. Due low volatility IL strong interaction water, maintains excellent at either ultra‐low temperature (−45 °C), (75 °C) or humidity environment (RH < 15%), demonstrating superb anti‐freezing anti‐drying Overall, simple yet versatile strategy introduced leads environmentally resilient ionogels meet requirements next‐generation electroactive devices.

Язык: Английский

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Mussel inspired Cu-tannic autocatalytic strategy for rapid self-polymerization of conductive and adhesive hydrogel sensors with extreme environmental tolerance

Chemical Engineering Journal, Год журнала: 2023, Номер 465, С. 142831 - 142831

Опубликована: Апрель 9, 2023

Язык: Английский

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An overview of conductive composite hydrogels for flexible electronic devices

Advanced Composites and Hybrid Materials, Год журнала: 2024, Номер 7(2)

Опубликована: Фев. 17, 2024

Язык: Английский

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Nanocellulose-mediated conductive hydrogels with NIR photoresponse and fatigue resistance for multifunctional wearable sensors

Carbohydrate Polymers, Год журнала: 2024, Номер 333, С. 121947 - 121947

Опубликована: Фев. 13, 2024

Язык: Английский

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Highly Stretchable, Low‐Hysteresis, and Adhesive TA@MXene‐Composited Organohydrogels for Durable Wearable Sensors

Advanced Functional Materials, Год журнала: 2024, Номер 34(30)

Опубликована: Март 25, 2024

Abstract As wearable sensors advance rapidly, demands for multifunctional conductive soft materials are ever higher, including high stretchability, resilience, adhesiveness and stability, simultaneously in one material, stable long‐term use. Nanocomposite hydrogels incorporating two‐dimensional (2D) nanofillers, such as MXene‐composited gels, emerge promising candidates. Yet, fulfilling all above requirements, particularly large stretchability with low hysteresis, remains a challenge, owing to the easy oxidation weak interactions of MXene nanosheets polymer chains. Herein, an interfacial engineering strategy is proposed, where tannic acid (TA) high‐density hydroxyl groups introduced encapsulate into TA@MXene nano‐motif meanwhile increase hydrogen‐bonding between network. By poly(hydroxyethyl acrylate) (PHEA) network glycerol/water binary solvent, obtained organohydrogel exhibits integrated properties (>500%) hysteresis (<3%), superior fatigue resistance (consistent over 500 cycles at 300% strain), good adhesiveness, along stability (>7 days) antifreezing abilities (−40 °C). Such organohydrogels demonstrate strain‐sensitivity thermosensitive capacities, enabling accurate reliable detection human movements, electrocardiogram signals, body temperature. This general approach stabilizing nanomaterials while effectively enhancing nanomaterial‐polymer bonding applicable synthesizing diverse high‐performance nanocomposited gels.

Язык: Английский

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Highly stretchable, environmentally stable, self-healing and adhesive conductive nanocomposite organohydrogel for efficient multimodal sensing

Chemical Engineering Journal, Год журнала: 2023, Номер 480, С. 148305 - 148305

Опубликована: Дек. 25, 2023

Язык: Английский

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A Semi‐Interpenetrating Poly(Ionic Liquid) Network‐Driven Low Hysteresis and Transparent Hydrogel as a Self‐Powered Multifunctional Sensor

Advanced Functional Materials, Год журнала: 2024, Номер 34(32)

Опубликована: Май 6, 2024

Abstract Conductive hydrogels are gaining significant attention as promising candidates for the fabrication materials flexible electronics. Nevertheless, improving tensile properties, hysteresis, durability, adhesion, and electrochemical properties of these remains challenging. This work reports development a novel semi‐interpenetrating network poly(ionic liquid) hydrogel named PATV, via in situ polymerization acrylamide, N ‐[Tris(hydroxymethyl)methyl] 1‐vinyl‐3‐butylimidazolium tetrafluoroborate. The density functional theory calculations reveal that acts physical cross–linking points to construct hydrogen‐bond networks. Furthermore, networks dissipate energy efficiently quickly, thus stress concentration hysteresis avoided. prepared has low (9%), high (900%), fast response (180 ms), sensitivity (gauge factor = 10.4, pressure 0.14 kPa −1 ), wide sensing range (tensile range: 1–600%, compression 0.1–20 kPa). A multifunctional sensor designed based on enables real‐time, rapid, stable response‐ability detection human movement, facial expression recognition, pronunciation, pulse, handwriting, Morse code encryption. assembled triboelectric nanogenerator displays an excellent harvesting capability, highlighting its potential application self‐powered wearable electronic devices.

Язык: Английский

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Surface Modification of Super Arborized Silica for Flexible and Wearable Ultrafast‐Response Strain Sensors with Low Hysteresis

Advanced Science, Год журнала: 2023, Номер 10(25)

Опубликована: Июнь 28, 2023

Conductive hydrogels exhibit high potential in the fields of wearable sensors, healthcare monitoring, and e-skins. However, it remains a huge challenge to integrate elasticity, low hysteresis, excellent stretch-ability physical crosslinking hydrogels. This study reports synthesis polyacrylamide (PAM)-3-(trimethoxysilyl) propyl methacrylate-grafted super arborized silica nanoparticle (TSASN)-lithium chloride (LiCl) hydrogel sensors with electrical conductivity. The introduction TSASN enhances mechanical strength reversible resilience PAM-TSASN-LiCl by chain entanglement interfacial chemical bonding, provides stress-transfer centers for external-force diffusion. These show outstanding (a tensile stress 80-120 kPa, elongation at break 900-1400%, dissipated energy 0.8-9.6 kJ m

Язык: Английский

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Lignin Nanosphere‐Modified MXene Activated‐Rapid Gelation of Mechanically Robust, Environmental Adaptive, Highly Conductive Hydrogel for Wearable Sensors Application

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Июль 22, 2024

Abstract Advanced conductive hydrogels demonstrate substantial potential for wearable devices. Nevertheless, the transformative advance in soft electronics raises harsh requirements on hydrogel candidates, such as rapid and on‐site fabrication, mechanical flexibility, high sensitivity, wide use temperature. Here, this problem is overcome by incorporating a dual catalytic system based lignin‐modified MXene‐Fe 3+ into commercial hydrogels. This 1) can form composite time scale of min at ambient condition without supply external energy, 2) incorporates multiple enhanced strategies polymer chains, 3) constructs well‐organized hybrid network. The fabricated displays an improved balanced overall performance, including ductility (2139%), moderate electrical conductivity, strong temperature tolerance (−70–50 °C). Combined with great merits above hydrogel‐based sensor good sensing (maximum GF: 2.8), stable repeatability (200% 200 cycles), work window 0%–947%, thereby disclosing promising application physiological movements, motion recognition breathing state detection. Sensationally, even complex or surroundings, sensors also produce reliable signal output. Together, strategy provides new mentality designing materials booming advanced electronics.

Язык: Английский

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