Formation of a stable LiF-rich SEI layer on molybdenum-based MXene electrodes for enhanced lithium metal batteries

Energy Materials, Journal Year: 2025, Volume and Issue: 5(3)

Published: Jan. 17, 2025

Lithium metal batteries are considered highly promising candidates for the next-generation high-energy storage system. However, growth of lithium dendrites significantly hinders their advance, particularly under high current densities, due to formation unstable solid electrolyte interphase (SEI) layers. In this study, we demonstrate that molybdenum-based MXenes, including Mo2CTx , Mo2TiC2Tx and Mo2Ti2C3Tx form more stable LiF/Li2CO3 SEI layers during plating, compared conventional Cu electrode. Among these, bimetallic MXene, with its higher fluorine terminations, produces most LiF-rich layer. The inorganic layer reduces nucleation overpotential deposition, promotes uniform Li suppresses dendrite growth. Consequently, substrate achieved prolonged cycling stability approximately 544 cycles coulombic efficiency ~99.79% at density 3 mA cm-2 capacity 1 mAh cm-2. full cells, anode, paired an NCM622 cathode, maintained retention 70% over 100 cathode loading 10 mg Our approach highlights potential Mo-based MXenes improve performance batteries, making them energy

Language: Английский

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Comparative Electromagnetic Shielding Performance of Ti₃C₂Tₓ–PVA Composites in Various Structural Forms: Compact Films, Hydrogels, and Aerogels

Nanoscale, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The study investigates the structural design of Ti 3 C 2 T x PVA composites in hydrogel, aerogel, and film forms, showing that EMI shielding mechanical properties are influenced by composite's configuration areal density.

Language: Английский

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SWCNT/MWCNT Binderless Hybrid Hydrogel: Towards Large-Scale High-Performance EMI Shielding Coating at Commercial Level

Carbon, Journal Year: 2025, Volume and Issue: unknown, P. 120250 - 120250

Published: March 1, 2025

Language: Английский

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Surface Functionalization of Ti₃C₂T_x MXenes in Epoxy Nanocomposites: Enhancing Conductivity, EMI Shielding, Thermal Conductivity, and Mechanical Strength

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

MXenes have gained significant attention as multifunctional fillers in MXene-polymer nanocomposites. However, their inherently hydrophilic surfaces pose challenges compatibility with hydrophobic polymers such epoxy, potentially limiting composite performance. In this study, high-crystalline Ti3C2Tx were functionalized alkylated 3,4-dihydroxy-l-phenylalanine ligands, transforming the MXene flakes into a more form, thus significantly enhancing epoxy matrix. This surface functionalization enabled uniform dispersion and supported formation of percolation network within matrix at low filler loading just 0.12 vol %. Consequently, MXene-epoxy nanocomposites exhibited remarkable performance, including an electrical conductivity 8200 S m-1, outstanding electromagnetic interference (EMI) shielding effectiveness (SE) 100 dB 110 GHz (61 8.2 GHz), improved thermal 1.37 W m-1 K-1, 300% increase tensile toughness (271 KJ m-3). These properties substantially outperformed those nonfunctionalized counterparts surpassed previously reported study underscores critical role unlocking full potential two-dimensional (2D) polymer composites, providing pathway to advanced nanocomposite materials.

Language: Английский

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Review of MXene synthesis and applications in electromagnetic shielding

RSC Advances, Journal Year: 2025, Volume and Issue: 15(12), P. 9555 - 9568

Published: Jan. 1, 2025

With the ongoing advancements in wireless communication and electronic technology, issue of electromagnetic radiation (EMR) pollution has become increasingly significant. Consequently, developing materials to mitigate EMR is essential. The utility 2D MXene (Ti3C2T x ) for interference (EMI) shielding was initially reported 2016. Since then, MXenes have garnered substantial interest from scientific community owing their excellent metallic conductivity, low density, expansive specific surface area, tunable interlayer spacing. In recent years, demonstrated considerable promise EMI applications. This paper aims examine structural chemical properties MXenes, methodologies synthesis, summarize MXene-based composites, highlighting performance benefits. Additionally, this review will discuss prospective developments shielding.

Language: Английский

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Manipulating optical properties of MXene/TiN with strong nonmetallic plasmonic coupling for multifunctional imaging attenuation

InfoMat, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Abstract Plasmonic materials enable flexible optical manipulation owing to their unique plasmon resonance, making them highly promising for photoelectronic imaging attenuation. However, designing plasmonic capable of multifaceted attenuation remains challenging. This study theoretically designed and experimentally prepared a dual nonmetallic Ti 3 C 2 T x /TiN hybrid. The composite material exhibited excellent performance in multifrequency, active/passive, polarized multifunctional TiN nanoclusters were chemically bonded nanosheets through an ultrasonic‐assisted method form strong coupling within these hybrids enables superior absorption photothermal conversion. Consequently, MXene/TiN aerosols demonstrated improvement approximately 14% compared with traditional oil–water visible‐light imaging. In addition, the hybrid electromagnetic wave absorption, covering nearly entire 8.96–18 GHz range. Moreover, polarization improved by 8.3% that aerosols, as evidenced algorithmically dehazed images. Furthermore, effectively provided “high‐temperature thermal concealment” far‐infrared active paves way developing materials, significant potential future technologies. image

Language: Английский

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Double conductive network enhanced multifunctional foam-based devices for wearable military suits

Composites Part B Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112578 - 112578

Published: April 1, 2025

Language: Английский

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Hierarchically engineered Sandwich-Structured h-MXene/ANF hybrid films with tunable electromagnetic interference shielding and exceptional environmental resilience

Composite Structures, Journal Year: 2025, Volume and Issue: unknown, P. 119248 - 119248

Published: May 1, 2025

Language: Английский

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