A Multifunctional Flexible Composite Film with Excellent Multi‐Source Driven Thermal Management, Electromagnetic Interference Shielding, and Fire Safety Performance, Inspired by a “Brick–Mortar” Sandwich Structure

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(26)

Published: March 29, 2022

Abstract The rapid development of portable flexible electronic devices means a multifunctional composite film with excellent thermal management capability, high electromagnetic interference (EMI) shielding, and strong fire safety performance is urgently required. In this paper, inspired by “brick–mortar” sandwich structure, phase change capsules (PCCs) MXene nanosheets are prepared. Subsequently, one‐step vacuum‐assisted filtration method used to fabricate PCC/MXene/polyvinyl alcohol (PMP) light‐to‐thermal conversion efficiency, Joule heating generation, safety, EMI shielding effects. superior preparation technology endows the multi‐source driven capabilities effectiveness values (43.13 dB). addition, PMP exhibits good flexibility enthalpy (136.8 J g −1 ). Surprisingly, film's properties improve its reliability safety. summary, simple technique outstanding overall films provide broad application prospects in advanced wearable products.

Language: Английский

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A wearable self-powered fire warning e-textile enabled by aramid nanofibers/MXene/silver nanowires aerogel fiber for fire protection used in firefighting clothing

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 460, P. 141661 - 141661

Published: Feb. 2, 2023

Language: Английский

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Recent Progress of Conductive Hydrogel Fibers for Flexible Electronics: Fabrications, Applications, and Perspectives

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(17)

Published: Jan. 31, 2023

Abstract Flexible conductive materials with intrinsic structural characteristics are currently in the spotlight of both fundamental science and advanced technological applications due to their functional preponderances such as remarkable conductivity, excellent mechanical properties, tunable physical chemical so on. Typically, hydrogel fibers (CHFs) promising candidates owing unique including light weight, high length‐to‐diameter ratio, deformability, Herein, a comprehensive overview cutting‐edge advances CHFs involving architectural features, function characteristics, fabrication strategies, applications, perspectives flexible electronics provided. The design principles strategies systematically introduced discontinuous (the capillary polymerization draw spinning) continuous wet spinning, microfluidic 3D printing, electrospinning). In addition, potential crucially emphasized energy harvesting devices, storage smart sensors, biomedical electronics. This review concludes perspective on challenges opportunities attractive CHFs, allowing for better understanding fundamentals development materials.

Language: Английский

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Ultra-compact MXene fibers by continuous and controllable synergy of interfacial interactions and thermal drawing-induced stresses

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Aug. 5, 2022

Recent advances in MXene (Ti3C2Tx) fibers, prepared from electrically conductive and mechanically strong nanosheets, address the increasing demand of emerging yet promising electrode materials for development textile-based devices beyond. However, to reveal full potential reaching a balance between electrical conductivity mechanical property is still fundamental challenge, mainly due difficulties further compact loose nanosheets. In this work, we demonstrate continuous controllable route fabricate ultra-compact fibers with an in-situ generated protective layer via synergy interfacial interactions thermal drawing-induced stresses. The resulting high orientation low porosity exhibit not only excellent tensile strength ultra-high toughness, but also conductivity. Then, construct meter-scale textiles using these achieve high-performance electromagnetic interference shielding personal management, accompanied by durability stability even after multiple washing cycles. demonstrated generic strategy can be applied broad range nanostructured functional large-scale applications both space daily lives.

Language: Английский

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In Situ Loading of Polypyrrole onto Aramid Nanofiber and Carbon Nanotube Aerogel Fibers as Physiology and Motion Sensors

ACS Nano, Journal Year: 2022, Volume and Issue: 16(5), P. 8161 - 8171

Published: April 28, 2022

Nanocomposite conductive fiber has been newly developed as a lightweight material with high flexibility and strong weavability, which can meet the requirements of flexible wearable devices. Herein, porous aramid nanofibers (ANF) carbon nanotube (CNT) aerogel fibers coated polypyrrole (PPy) layers are prepared by wet spinning method for motion detection information transmission. The ANF/CNT/PPy low density (56.3 mg/cm3), conductivity (6.43 S/m), tensile strength (2.88 MPa) were used sensors sensitivity (0.12) long life (1000 cycles). At same time, differential is utilized to reduce transmission time (up 46%). High- low-temperature-resistant (-196 100 °C) also available quick heater ionic solution detector. In summary, be multifunctional sensor human-health monitoring.

Language: Английский

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Ultrathin carbon layer coated MXene/PBO nanofiber films for excellent electromagnetic interference shielding and thermal stability

Composites Part A Applied Science and Manufacturing, Journal Year: 2023, Volume and Issue: 176, P. 107857 - 107857

Published: Oct. 14, 2023

Language: Английский

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The Rising Aerogel Fibers: Status, Challenges, and Opportunities

Advanced Science, Journal Year: 2023, Volume and Issue: 10(9)

Published: Jan. 19, 2023

Aerogel fibers garner tremendous scientific interest due to their unique properties such as ultrahigh porosity, large specific surface area, and ultralow thermal conductivity, enabling diverse potential applications in textile, environment, energy conversion storage, high-tech areas. Here, the fabrication methodologies construct aerogel starting from nanoscale building blocks are overviewed, spinning thermodynamics kinetics associated with each technology revealed. The huge pool of material choices that can be assembled into is discussed. Furthermore, fascinating fibers, including mechanical, thermal, sorptive, optical, fire-retardant elaborated on. Next, nano-confining functionalization strategy for particularly highlighted, touching upon driving force liquid encapsulation, solid-liquid interface adhesion, interfacial stability. In addition, emerging management, smart wearable fabrics, water harvest, shielding, heat transfer devices, artificial muscles, information Last, existing challenges development pointed out light shed on opportunities this burgeoning field.

Language: Английский

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Temperature-Arousing Self-Powered Fire Warning E-Textile Based on p–n Segment Coaxial Aerogel Fibers for Active Fire Protection in Firefighting Clothing

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Oct. 13, 2023

Firefighting protective clothing is a crucial equipment for firefighters to minimize skin burn and ensure safety firefighting operation rescue mission. A recent increasing concern develop self-powered fire warning materials that can be incorporated into the achieve active protection before catches on fireground. However, it still challenge facilely design manufacture thermoelectric (TE) textile (TET)-based electronics with dynamic surface conformability breathability. Here, we an alternate coaxial wet-spinning strategy continuously produce alternating p/n-type TE aerogel fibers involving n-type Ti3C2Tx MXene p-type MXene/SWCNT-COOH as core materials, tough aramid nanofiber shell, which simultaneously flexibility high-efficiency power generation. With such fibers, TET-based sensors high mechanical stability wearability are successfully fabricated through stitching p-n segment fabric. The results indicate containing 50 pairs open-circuit voltage of 7.5 mV density 119.79 nW cm-2 at temperature difference 300 °C. output signal then calculated corresponding based linear relationship between temperature. alarm response time flame-retardant properties further displayed. Such true textiles offer breathability compatibility body movement, demonstrating their potential application in clothing.

Language: Английский

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A melanin-inspired robust aerogel for multifunctional water remediation

Materials Horizons, Journal Year: 2023, Volume and Issue: 10(3), P. 1020 - 1029

Published: Jan. 1, 2023

Solar-driven vapor generation has emerged as a promising wastewater remediation technology for clean water production. However, the complicated and diversified contaminants in still restrict its practical applications. Herein, inspired by melanin nature, robust aerogel was facilely fabricated multifunctional via one-pot condensation copolymerization of 5,6-dihydroxyindole formaldehyde. Benefiting from superhydrophilicity, underwater superoleophobicity, synergistic coordination effects, resulting not only showed excellent performances oil resistance oil-water separation ability, but also removed organic dyes heavy metal ions simultaneously. Moreover, owing to admirable light harvesting capacity porous microstructure fast transportation, aerogel-based evaporator exhibited an evaporation rate 1.42 kg m-2 h-1 with 91% efficiency under 1 sun illumination, which can be reused long-term evaporation. Note that such stable could maintained even containing complex multicomponent contaminants. Outdoor experiments lotus pond natural sunlight proved great potential All those features this all-in-one melanin-inspired may provide new strategies development photothermal devices solar-driven remediation.

Language: Английский

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NIR Plasmonic Nanozymes: Synergistic Enhancement Mechanism and Multi‐Modal Anti‐Infection Applications of MXene/MOFs

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(8)

Published: Oct. 9, 2023

Abstract Nanozymes are considered as the promising antimicrobial agents due to enzyme‐like activity for chemo‐dynamic therapy (CDT). However, it remains a challenge develop novel nanozyme systems achieving stimuli‐responsive, and efficient catalysis with multimodal synergistic enhancement. In this work, near‐infrared (NIR) plasmonic‐enhanced photothermal performance effective applications proposed. A Ti 3 C 2 MXene/Fe‐MOFs composite (MXM) NIR CDT combined properties is successfully developed by loading metal‐organic framework (MOF) nanozymes onto MXene. The mechanism of induced localized surface plasmon resonance (LSPR)‐enhanced (PTT) well explained through activation energy ( E ), electrochemical impedance spectroscopy (EIS), X‐ray photoelectron (XPS), fluorescence analysis experiments, finite element simulation. It reveals that MXene nanosheets exhibit exciters generate hot electrons can transfer Fe‐MOFs, promoting Fenton reaction enhances CDT. While heating produced LSPR also boost Fe‐MOFs under irradiation. Both in vitro vivo experimental results demonstrate LSPR‐induced MXM system has outstanding properties, promote angiogenesis collagen deposition, leading accelerated wound healing.

Language: Английский

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