Recent advances in conductive hydrogels: classifications, properties, and applications

Chemical Society Reviews, Год журнала: 2022, Номер 52(2), С. 473 - 509

Опубликована: Дек. 9, 2022

Hydrogel-based conductive materials for smart wearable devices have attracted increasing attention due to their excellent flexibility, versatility, and outstanding biocompatibility. This review presents the recent advances in multifunctional hydrogels electronic devices. First, with different components are discussed, including pure single network based on polymers, additional additives (i.e., nanoparticles, nanowires, nanosheets), double additives. Second, a variety of functionalities, self-healing, super toughness, self-growing, adhesive, anti-swelling, antibacterial, structural color, hydrophobic, anti-freezing, shape memory external stimulus responsiveness introduced detail. Third, applications flexible illustrated strain sensors, supercapacitors, touch panels, triboelectric nanogenerator, bioelectronic devices, robot). Next, current challenges facing summarized. Finally, an imaginative but reasonable outlook is given, which aims drive further development future.

Язык: Английский

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Advances in the design and assembly of flexible thermoelectric device

Progress in Materials Science, Год журнала: 2022, Номер 131, С. 101003 - 101003

Опубликована: Авг. 18, 2022

Язык: Английский

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Ultrathin Cellulose Nanofiber Assisted Ambient‐Pressure‐Dried, Ultralight, Mechanically Robust, Multifunctional MXene Aerogels

Advanced Materials, Год журнала: 2022, Номер 35(1)

Опубликована: Окт. 25, 2022

Ambient-pressure-dried (APD) preparation of transition metal carbide/nitrides (MXene) aerogels is highly desirable yet remains challenging. Here, ultrathin, high-strength-to-weight-ratio, renewable cellulose nanofibers (CNFs) are efficiently utilized to assist in the APD ultralight robust, conductive, large-area MXene-based via a facile, energy-efficient, eco-friendly, and scalable freezing-exchanging-drying approach. The strong interactions large-aspect-ratio CNF MXene as well biomimetic nacre-like microstructure induce high mechanical strength stability avoid structure collapse process. Abundant functional groups CNFs facilitate chemical crosslinking aerogels, significantly improving hydrophobicity, water resistance, even oxidation stability. 1D nature renders minimal MXenes' interlayered gaps numerous heterogeneous interfaces, yielding excellent conductivity electromagnetic interference (EMI) shielding performance aerogels. synergies MXene, CNF, abundant pores improve EMI performance, photothermal conversion, absorption viscous crude oil. This work shows great promises APD, multifunctional protection or compatibility, thermal therapy, oil-water separation applications.

Язык: Английский

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Biomimetic Porous MXene Sediment-Based Hydrogel for High-Performance and Multifunctional Electromagnetic Interference Shielding

ACS Nano, Год журнала: 2022, Номер 16(9), С. 15042 - 15052

Опубликована: Авг. 19, 2022

Developing high-performance and functional hydrogels that mimic biological materials in nature is promising yet remains highly challenging. Through a facile, scalable unidirectional freezing followed by salting-out approach, type of composed "trashed" MXene sediment (MS) biomimetic pores manufactured. By integrating the honeycomb-like ordered porous structure, conductive MS, water, electromagnetic interference (EMI) shielding effectiveness up to 90 dB X band can reach more than 40 ultrabroadband gigahertz (8.2–40 GHz) for flexible hydrogel, outperforming previously reported EMI shields. Moreover, thanks stable framework MS-based influences water on performance are quantitatively identified. Furthermore, extremely low content silver nanowire embedded into hydrogels, leading significantly improved multiple reflection-induced microwave loss thus performance. Last, allow sensitive reliable detection human motions smart coding. This work not only achieves control via interior structure but also demonstrates waste-free, low-cost, strategy prepare multifunctional, hydrogels.

Язык: Английский

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Self-Healing Liquid Metal Magnetic Hydrogels for Smart Feedback Sensors and High-Performance Electromagnetic Shielding

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Март 31, 2023

Hydrogels exhibit potential applications in smart wearable devices because of their exceptional sensitivity to various external stimuli. However, are limited by challenges terms issues biocompatibility, custom shape, and self-healing. Herein, a conductive, stretchable, adaptable, self-healing, biocompatible liquid metal GaInSn/Ni-based composite hydrogel is developed incorporating magnetic into the framework through crosslinking polyvinyl alcohol (PVA) with sodium tetraborate. The excellent stretchability fast self-healing capability PVA/liquid derived from its abundant hydrogen binding sites fusion. Significantly, owing constituent, can be guided remotely using an field specific position repair broken wires no need for manual operation. also exhibits sensitive deformation responses used as strain sensor monitor body motions. Additionally, multifunctional displays absorption-dominated electromagnetic interference (EMI) shielding properties. total performance increases ~ 62.5 dB 31.8 pure PVA at thickness 3.0 mm. proposed bioinspired demonstrates substantial application intelligent devices.

Язык: Английский

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Design and advanced manufacturing of electromagnetic interference shielding materials

Materials Today, Год журнала: 2023, Номер 66, С. 245 - 272

Опубликована: Апрель 10, 2023

Electromagnetic interference (EMI) shielding is critical in electronic applications. However, the currently available EMI materials are restricted customizability and application flexibility. Recent advances manufacturing technologies have provided a unique path to achieve custom creation of solutions. A successful example additive (AM), which has enabled high design freedom, efficient performance regulation, multifunctionality simultaneously into fabricated shields, offering an opportunity start revolution field shielding. In this review, we summarize latest AM materials, aiming provide deep understanding connection between raw methods, considerations, performances shields. We first introduce mechanism subsequently focusing on characteristics representative methods as-created Based requirements create application-oriented solutions, these also critically compared. Thereafter, present state-of-the-art considerations shields examine pivotal roles realizing designs. conclude by discussing future research directions, at motivating use developments

Язык: Английский

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Multifunctional Organohydrogel with Ultralow‐Hysteresis, Ultrafast‐Response, and Whole‐Strain‐Range Linearity for Self‐Powered Sensors

Advanced Functional Materials, Год журнала: 2023, Номер 33(15)

Опубликована: Фев. 7, 2023

Abstract The conductive hydrogels always suffered from high internal friction, large hysteresis, and low capability of accurately predicting physical deformation, which seriously restricted their application in smart wearable devices. To address these problems, solvent molecules are directionally inserted into the polymer molecule chains via bridge effect to effectively reduce molecular friction. Moreover, swelling is also combined eliminate temporary entanglements hydrogel system. cooperation between swollen endows prepared polyacrylamide (PAM)/laponite/H 3 BO /ethylene glycol (Eg) organohydrogel (PLBOH) ultralow hysteresis (1.38%, ε = 100%), ultrafast response (≈10 ms), linearity whole‐strain‐range ( R 2 0.996) with a great sensitivity GF 2.68 at strain range 0–750%). Meanwhile, PL 10 B 30 OH exhibits long‐term stability, excellent stretchability, dissipated energy. Furthermore, assembled triboelectric nanogenerator (TENG) displays an outstanding energy harvesting performance output voltage 200 V size 20 mm × mm. sensors can monitor small facial expressions human movements, indicating tremendous applications self‐powered intelligent flexible electronics under harsh environmental conditions.

Язык: Английский

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External field-assisted techniques for polymer matrix composites with electromagnetic interference shielding

Science Bulletin, Год журнала: 2023, Номер 68(17), С. 1938 - 1953

Опубликована: Авг. 1, 2023

Язык: Английский

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Energy Applications of Ionic Liquids: Recent Developments and Future Prospects

Chemical Reviews, Год журнала: 2023, Номер 123(21), С. 12170 - 12253

Опубликована: Окт. 25, 2023

Ionic liquids (ILs) consisting entirely of ions exhibit many fascinating and tunable properties, making them promising functional materials for a large number energy-related applications. For example, ILs have been employed as electrolytes electrochemical energy storage conversion, heat transfer fluids phase-change thermal storage, solvents and/or catalysts CO2 capture, biomass treatment biofuel extraction, high-energy propellants aerospace This paper provides an extensive overview on the various applications offers some thinking viewpoints current challenges emerging opportunities in each area. The basic fundamentals (structures properties) are first introduced. Then, motivations successful field concisely outlined. Later, detailed review recent representative works area is provided. application, role their associated benefits elaborated. Research trends insights into selection to achieve improved performance analyzed well. Challenges future pointed out before concluded.

Язык: Английский

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Conductive Hydrogel for Flexible Bioelectronic Device: Current Progress and Future Perspective

Advanced Functional Materials, Год журнала: 2023, Номер 34(1)

Опубликована: Сен. 19, 2023

Abstract Conductive hydrogels (CHs) for flexible bioelectronic devices have raised great attention due to their tunable mechanical performances, adhesion, anti‐swelling, and biocompatibility. This review summarizes the current development of conductive hydrogel‐based in aspect classifications applications. Firstly, are classified into two kinds according types conductivity: ionic electronic (hydrogel based on pure materials, introducing micro/nano‐materials). Secondly, applications device, like wearable (strain sensor, body fluid detector, serviced extreme environment), tissue engineering (skin, heart, nerve, muscle), other (bionic robot, cancer treatment), highly illustrated. Finally, a depth outlook is given, which aims promote this field future.

Язык: Английский

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