MXene-based nanocomposites: synthesis, optical properties, and biomedical applications

Microchimica Acta, Год журнала: 2025, Номер 192(6)

Опубликована: Май 7, 2025

Язык: Английский

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Spinning Dope Modulation Via pH‐Triggered Multiscale Sheet‐Wire Linkages for Constructing Strong Ti₃C₂T_X MXene Fibers with High Volumetric Capacitance

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 9, 2025

Abstract Due to their ultrahigh volumetric capacitance, metallic conductivity, and excellent mechanical properties, Ti 3 C 2 T X MXene nanosheets are considered promising building blocks for the construction of advanced fibers toward practical applications fibriform supercapacitors (FSCs) that emerge as an important power supplying system wearable electronics. However, because incompatible interfacial microstructural design concepts, synergistic improvement in output capacitance tensile strength remains a critical challenge fibers. Herein, versatile pH‐triggered strategy is presented modulating spinning dope high‐performance with simultaneous enhancement electrochemical strength. Carboxylated cellulose nanofibers (CNF‐C) selected additives stock multiscale sheet‐wire linkages arbitrarily formed via nucleophilic substitution dehydration reactions by adjusting pH value. The nematic LC behavior spinnability significantly improved good ordering nanosheets. Impressively, optimized MCC4 fiber achieves electrical conductivity 3007 S cm −1 , specific 1253 F −3 258 MPa. solid‐state FSCs assembled from exhibit remarkable energy density 22.78 mWh together charge/discharge reliability outstanding robustness.

Язык: Английский

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Interfacial‐Aligned and High Conductive 1T‐MoS₂@Ti₃C₂T_x Heterostructure Nonwoven Fabric for Robust Deformable Supercapacitors

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 12, 2024

Abstract With the urgent demand for wearable electronics and smart textiles in modern society, fabric‐based supercapacitors (FSCs) have attracted increasing attention due to their easy integration, high power density, long‐term stability. However, low energy density deformable capability of supply cause limitations actual applications. Here, a 1T‐MoS 2 @Ti 3 C T x heterostructure nonwoven fabric (NWF) with interfacial adhesion, electrical conductivity, mechanical deformability is developed, which great significance unitization as an advanced FSCs electrode. Owing designed aligned active interface, conductive network, situ coupling, NWF exhibits ion adsorption barrier, fast diffusion kinetics, accelerated electron transport, resulting large capacitance (425 F g −1 ) cycling stability (20 000 cycles) 1 m H SO 4 electrolyte. Additionally, corresponding solid‐state asymmetric (D‐SCs) provide 119.3 µWh cm −2 at 800.8 µW , realizing practical applications powering electroluminescent device, 2‐D code, sound‐controlled electronic fan. More importantly, D‐SCs exhibit robust power‐supply capability, maintaining 82.1%, 84.6%, 89.9% capacity retentions after 2000 cycles folding, twisting, bending conditions, respectively.

Язык: Английский

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Wearable, Recoverable, and Implantable Energy Storage Devices With Heterostructure Porous COF‐5/Ti₃C₂T_x Cathode for High‐performance Aqueous Zn‐ion Hybrid Capacitor

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 31, 2024

Abstract With the continuous advancement of internet things and information technology, implantable bioelectronics have attracted considerable attention for effective health monitoring improvement vital signs. Nevertheless, conventional power sources are typically plagued by short lifetimes, inflexible packaging modalities, toxic corrosion risks that damage soft tissues. In this study, a biocompatible quasi‐solid‐state aqueous Zn‐ion hybrid capacitor (AZIHCs) is developed with high energy density durability. The heterostructured porous COF‐5/Ti 3 C 2 T x cathode exhibited enhanced interface charge transfer accelerated Zn 2+ migration kinetics, delivering an outstanding areal capacitance 952 mF cm −2 160 mWh . Furthermore, AZIHCs demonstrated reversible capacity 524 cm⁻ , completely damaged device can still electronics after being reconnected using superior silk nanofiber‐containing zwitterionic hydrogel electrolyte. These implanted AZIHCs, good biocompatibility, showed substantial deformation stability 80.2% 2000 cycles when firmly adhered to tissues, illustrating impressively stable performance in tissue fluid or wetted surface efficient supply. This study provides novel approach high‐performance storage devices multifunctional wearable applications organism patches vivo detection.

Язык: Английский

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