Highly Stretchable Ti3C2Tx MXene-Integrated Phase Change Films for Solar-Thermal Harvesting and Infrared Stealth

Wang, Jiuao; He, Zhen; Du, Zongliang; Cheng, Xu; Wang, Haibo; Du, Xiaosheng

doi:10.1021/acssuschemeng.3c03543

Cited by 13 publications

(2 citation statements)

References 64 publications

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“…In addition to metal materials, carbon-based fillers , and intrinsically conductive polymers are also commonly used as EMI shielding materials, but their inherent characteristics also limit their development in the field of flexibility. ,, Polypyrrole (PPy) is considered a microwave-absorbing material with adjustable impedance matching, which has the characteristics of oxygen resistance and thermal stability. , Carbon nanotubes (CNT) have high conductivity but often lead to impedance imbalance . It is difficult for EMI shielding materials that only provide a single performance to meet complex environments, such as military affairs, which requires the application of EMI shielding materials to be expanded to various and more complex practical scenes and fields. , Under radar detection, military electronic equipment needs infrared radiation (IR) stealth performance on its outer surface. − Moreover, it needs hydrophobicity, oxidation resistance, flexibility, and environmental stability under outdoor conditions. − Jia et al used vacuum-assisted suction filtration to make copper nanowires, Ti 3 C 2 T x , and aramid fibers into hybrid films, which not only have an EMI SE of 45.33 dB but also have high flexibility and environmental stability. He et al prepared multifunctional MF@MA/PEG composites by vacuum impregnation.…”

Section: Introductionmentioning

confidence: 99%

Cellulose Nanofiber/Carbon Nanotube@Polypyrrole-Silver Nanowires Composite Films with a Multilayer Double Conductive Structure for High-Efficiency Electromagnetic Interference Shielding and Infrared Stealth

Wu,

Yu,

Huang

et al. 2024

ACS Appl. Eng. Mater.

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Fiber-based conductive films show great potential for use in electromagnetic interference shielding (EMI). However, it remains a challenge to meet the multifunctional requirements of ultrathin materials, such as simultaneous infrared stealth and outdoor stability. Here, this work prepared multilayer composite membranes composed of cellulose nanofiber layer (CNF), CNF/ carbon nanotube@polypyrrole layer, and CNF/silver nanowire (AgNWs) layer in different sequences by a simple step-by-step vacuum filtration strategy and named them F, P, and A, respectively. Compared with the uniformly mixed film, the three-layer films have excellent shielding effectiveness (SE), attributed to the double gradient conductive network structure and loss of interfacial polarization. The P−F−A film, in particular, has a unique blank sandwich layer that makes the reflection and scattering paths of electromagnetic waves longer. As a result, the EMI SE of the P−F−A film is 69.8 dB, which is higher than those of F−P−A (64.06 dB) and F−A−P (63.8 dB). In addition, this work constructed a superhydrophobic surface by using 1H,1H,2H,2Hperfluorodecanethiol (PFDT) as the composite membranes. Because of the extremely low infrared emissivity of AgNWs, F−P− A and P−F−A films have excellent infrared stealth capabilities, and their performances are not affected by bending and abrasion, which can meet the requirements of multifunctions and adapt to complex environments. Overall, the composite films designed in this study have broad application prospects in flexible electronics wearable products, radar stealth, aerospace, and other fields.

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Section: Introductionmentioning

confidence: 99%

Cellulose Nanofiber/Carbon Nanotube@Polypyrrole-Silver Nanowires Composite Films with a Multilayer Double Conductive Structure for High-Efficiency Electromagnetic Interference Shielding and Infrared Stealth

Wu,

Yu,

Huang

et al. 2024

ACS Appl. Eng. Mater.

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“…MXenes can be synthesized from laminated M n +1 AX n (MAX) phases (M stands for a transition metal, A stands for the element from mostly groups 13 and 14, and X stands for C and/or N) with the general formula M n +1 X n T x ( n = 1–4), where T x is hydrophilic groups on the surface such as −O, −OH, and −F . Since its first discovery in 2011, MXene has garnered significant attention across multiple fields as separation science, energy storage, and biomedical and environmental applications . In 2016, it had found initial applications in catalysis, encompassing electrocatalysis, photocatalysis, and thermal catalysis due to its distinctive surface properties such as tunable Lewis acidity and exceptional thermal stability .…”

Section: Introductionmentioning

confidence: 99%

Efficient Catalytic Activity of Ti₃C₂T_x MXene for Polyester Synthesis

Fei,

Wang,

Guo

et al. 2024

Ind. Eng. Chem. Res.

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Polyethylene terephthalate (PET) is one of the most widely used polymers for beverage packaging and fibers, with antimony-based catalysts currently dominating its synthesis. However, concerns about potential safety hazards associated with antimony leaching necessitate the development of environmentally benign catalysts free from heavy metals. In this work, we report the firsttime utilization of Ti 3 C 2 T x MXene as a polycondensation catalyst of PET. The intrinsic viscosity of Ti 3 C 2 T x MXene-catalyzed PET could reach 0.78 dL/g within 2.1 h, which demonstrated a superior catalytic efficiency compared to antimony trioxide (Sb 2 O 3 ). Moreover, Ti 3 C 2 T x MXene exhibited a satisfactory performance not only in PET synthesis but also in the production of polypropylene terephthalate (PPT) and polybutylene terephthalate (PBT), thereby confirming its universality in polyester catalysis. The catalytic activity of Ti 3 C 2 T x MXene in polycondensation reactions was attributed to the presence of strong Lewis acid sites, as supported by surface examinations and computational studies. Notably, Ti 3 C 2 T x MXene-catalyzed PET exhibited satisfied crystallizability, as confirmed by the short crystallization half-time of only 6.9 s at 185 °C, signifying a high crystallization rate. This work highlights the potential applications of this thriving 2D material in polyester catalysis and, more importantly, provides a new perspective for the exploration and design of efficient and environmentally friendly catalyst/nucleation agents for polyester synthesis.

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Multi‐Interface Engineering of MXenes for Self‐Powered Wearable Devices

Liu,

Feng,

Yin

et al. 2024

Advanced Materials

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Self‐powered wearable devices with integrated energy supply module and sensitive sensors have significantly blossomed for continuous monitoring of human activity and the surrounding environment in healthcare sectors. The emerging of MXene‐based materials has brought research upsurge in the fields of energy and electronics, owing to their excellent electrochemical performance, large surface area, superior mechanical performance, and tuneable interfacial properties, where their performance can be further boosted via multi‐interface engineering. Herein, a comprehensive review of recent progress in MXenes for self‐powered wearable devices is discussed from the aspects of multi‐interface engineering. The fundamental properties of MXenes including electronic, mechanical, optical, and thermal characteristics are discussed in detail. Different from previous review works on MXenes, multi‐interface engineering of MXenes from termination regulation to surface modification and their impact on the performance of materials and energy storage/conversion devices are summarized. Based on the interfacial manipulation strategies, potential applications of MXene‐based self‐powered wearable devices are outlined. Finally, proposals and perspectives are provided on the current challenges and future directions in MXene‐based self‐powered wearable devices.This article is protected by copyright. All rights reserved

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Highly Stretchable Ti₃C₂T_x MXene-Integrated Phase Change Films for Solar-Thermal Harvesting and Infrared Stealth

Cited by 13 publications

References 64 publications

Cellulose Nanofiber/Carbon Nanotube@Polypyrrole-Silver Nanowires Composite Films with a Multilayer Double Conductive Structure for High-Efficiency Electromagnetic Interference Shielding and Infrared Stealth

Cellulose Nanofiber/Carbon Nanotube@Polypyrrole-Silver Nanowires Composite Films with a Multilayer Double Conductive Structure for High-Efficiency Electromagnetic Interference Shielding and Infrared Stealth

Efficient Catalytic Activity of Ti₃C₂T_x MXene for Polyester Synthesis

Multi‐Interface Engineering of MXenes for Self‐Powered Wearable Devices

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Highly Stretchable Ti3C2Tx MXene-Integrated Phase Change Films for Solar-Thermal Harvesting and Infrared Stealth

Cited by 13 publications

References 64 publications

Cellulose Nanofiber/Carbon Nanotube@Polypyrrole-Silver Nanowires Composite Films with a Multilayer Double Conductive Structure for High-Efficiency Electromagnetic Interference Shielding and Infrared Stealth

Cellulose Nanofiber/Carbon Nanotube@Polypyrrole-Silver Nanowires Composite Films with a Multilayer Double Conductive Structure for High-Efficiency Electromagnetic Interference Shielding and Infrared Stealth

Efficient Catalytic Activity of Ti3C2Tx MXene for Polyester Synthesis

Multi‐Interface Engineering of MXenes for Self‐Powered Wearable Devices

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Product

Resources

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Highly Stretchable Ti₃C₂T_x MXene-Integrated Phase Change Films for Solar-Thermal Harvesting and Infrared Stealth

Efficient Catalytic Activity of Ti₃C₂T_x MXene for Polyester Synthesis