Gels
·
2025
·Vol. 11
·期 12
·
IF 5.3
Zhenzhen Shan,Xiaoxiong Li,Yalei Li,Yong Wang,Yusen He,Guangyu Sun,Yamin Geng,Guoqing Chang
Lithium–sulfur (Li-S) batteries are renowned for their high theoretical energy density and low cost, yet their practical implementation is hampered by the polysulfide shuttle effect and sluggish redox kinetics. Herein, a sol–gel strategy is proposed to engineer a multifunctional MXene/Fe3O4composite as an efficient mediator for the cathode interlayer. The synthesized composite features Fe3O4nanospheres uniformly anchored on the highly conductive Ti3C2TxMXene lamellae, forming a unique 0D/2D conductive network. This structure not only provides abundant polar sites for strong chemical adsorption of polysulfides but also significantly enhances charge transfer, thereby accelerating the conversion kinetics. As a result, the Li-S battery based on the MXene/Fe3O4interlayer delivers a high initial discharge capacity of 1367.1 mAh g−1at 0.2 C and maintains a stable capacity of 1103.4 mAh g−1after 100 cycles, demonstrating an exceptionally low capacity decay rate of only 0.19% per cycle. Even at a high rate of 1 C, a remarkable capacity of 1066.1 mAh g−1is retained. Electrochemical analyses confirm the dual role of the composite in effectively suppressing the shuttle effect and catalyzing the polysulfide conversion. This sol–gel engineering approach offers valuable insight into the design of high-performance mediators for advanced Li-S batteries.
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Hao Siyu,Zhu Qingsong,Peng Xingna,Fan Jiayi,He Zimeng,Li Wei
Given the rapid advancements in digital and communication technology, electromagnetic wave pollution has emerged as a pressing concern for society. In addition, wave-absorbing materials are typically utilized in complex and dynamic environments, where they are susceptible to corrosion, which can result in a reduction in their effectiveness. Herein we synthesized a polypyrrole functionalized Ti 3 C 2 MXene (PPy-TM) hybrid with significant electromagnetic wave absorption and superior corrosion resistance by in situ polymerization method, which due to the in situ polymerization process of PPy on TM's surface causes the smoothness of TM's surface to turn coarse. The composite exhibited an optimal reflection loss of − 35.5 dB at 3.60 GHz for a 7.50 mm thickness. Additionally, the value of |Z| 0.01 Hz for PPy-TM 0.5% (5.1218 × 10 4 Ω cm 2 ) was an order of magnitude higher than the WEP (7.9778 × 10 3 Ω cm 2 ) coating after 30 days of exposure to 3.5 wt% NaCl electrolyte. This study establishes a benchmark for designing next-generation materials that integrate robust microwave absorption with long-term corrosion protection.
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高影响因子
Green Chemical Engineering
·
2025
·
IF 7.6
Guangcai Zhao,Shuo Meng,Zhongyuan Zheng,Jian Guo,Lu Chen,Hongli Zheng,Peng Zhang,Jia Yu,Lujie Zuo,Hongbin Zhao,Ting He
Vanadium-based compounds are promising cathodes for aqueous zinc-ion batteries owing to their high capacity derived from multi-electron redox reactions. However, their practical application is often hampered by poor rate capability, caused by low electrical conductivity and sluggish Zn 2+ diffusion kinetics. Herein, we propose a precise amorphization strategy applied to conductive V 2 CT x MXene to overcome these limitations. Starting from exfoliated few-layer V 2 CT x , a controlled annealing process in argon induces a crystalline-to-amorphous transition, which effectively elevates the valence state of surface vanadium, creates abundant active sites for Zn 2+ storage, and expands the interlayer spacing to facilitate ion diffusion. Meanwhile, the intrinsic conductive V-C-V framework remains intact, ensuring rapid electron transport. As a result, the amorphous a-V 2 CT x cathode delivers remarkable electrochemical performance: a high reversible capacity of 543 mAh/g at 1 A/g, exceptional rate capability (494 mAh/g at 30 A/g), and outstanding cycling stability over 3000 cycles with a minimal decay rate of 0.012% per cycle. This work demonstrates the great potential of phase engineering MXenes for developing high-performance energy storage materials.
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ACS Applied Electronic Materials
·
2025
·
IF 4.7
Xincheng Wang,Yingxin Yuan,Jinhao Xu,Zhen Li,Tianyi Xu,Penglin Lu,Shanshan Guan
Multifunctional flexible sensing technology has emerged as a pivotal research hotspot. However, most existing flexible sensors are constrained by single-functionality limitations and thus fail to meet the increasingly urgent demand for integrated multiparameter sensing in complex real-world scenarios. In this study, we propose a multifunctional flexible sensor based on an rGO@MXene/PDMS nanocomposite, which integrates three functionalities: high gauge factor (GF) strain sensing, precise resistive temperature sensing, and efficient photothermal conversion. These capabilities enable reliable monitoring of physiological signals, health monitoring, and localized thermal therapy. The as-fabricated flexible strain sensor exhibits exceptional performance, exhibiting a low detection limit of 0.5%, high gauge factor (GF) of 1000, broad dynamic range of 0%–400%, and excellent cycling stability over 20,000 cycles. Notably, the sensor achieves a temperature coefficient of resistance (TCR) of −1.01% °C–1, enabling sustained real-time physiological temperature monitoring for up to 1800 min. Furthermore, the sensor exhibits efficient photothermal conversion capability, achieving a rapid temperature rise (ΔT > 40 °C under 1 kW m–2) and stable heat retention, making it highly promising for localized thermal therapy. This work provides great potential to advance the development of next-generation wearable devices, smart healthcare systems, and human–machine interaction technologies.
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COMPOSITES PART B-ENGINEERING
·
2025
·
IF 14.2
Nuo Xu,Zhihong Ma,Jinzhi Ouyang,Mingkun Jia,Tianyu Zhao,Fengjuan Wang,Wenxiang Xu,Shaohua Chen
Balancing strength and toughness with synergistic enhancement remains a critical challenge in developing high-performance carbon fiber (CF) composites. Deep-sea nautilus exhibits a superior strength-toughness balance compared with shallow-water nacre, attributed to its exceptionally large platelet aspect ratio, densely distributed nano-asperities, and higher organic matrix content that jointly give rise to enhanced interfacial shear resistance through coupled adhesion-friction mechanisms. Inspired by this naturally optimized architecture, we develop a biomimetic “brick-and-mortar” interphase using MXene@TiO 2 assembled with polydopamine/polyethyleneimine (PDA/PEI) nanolayers. Unlike conventional “brick-and-mortar” interphases, the micro-convex TiO 2 nanoparticles on MXene surfaces provide mechanical interlocking and more homogenized stress transfer, while PDA/PEI layers ensures strong chemical adhesion, enabling the simultaneous enhancement of interfacial strength and toughness. The resulting CF-MXene@TiO 2 /epoxy composite exhibits a 66.9 % increase in interfacial shear strength (75.6 ± 3.3 MPa) and a 71.9 % rise in interfacial fracture toughness G ic = 91.3 ± 5.9 J/m 2 , compared to the desized CF. Flexural strength and interlaminar shear strength are also improved by 31.6 % and 46.9 %, respectively. Mechanistic analysis indicates that the synergistic interaction between the micro-convex “brick” (MXene@TiO 2 nanosheet) and the “mortar” (PDA/PEI nanolayer) optimizes the interfacial microstructure, effectively suppressing crack propagation and promoting superior interfacial strength and toughness. This work provides a rational biomimetic strategy to overcome the strength-toughness trade-off and offers potential applications in aerospace, marine, and other high-performance CF composite structures.
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JOURNAL OF ADHESION
·
2025
·
IF 2.3
Shanglin Xiang,Jingjin Cai,Peng Wang,Bingjie Ge,Jun Zhang,Dongyu Cai
Degradation of polyurethane (PU) adhesives is critical for enabling the recycling of aluminum-plastic (A-P) laminate films for flexible packaging. This work develops a novel MXene-enhanced ternary heterojunction that achieves non-contact sunlight-driven degradation of encapsulated PU adhesives. Synthesized through electrostatic self-assembly of carbon nanotubes (CNTs) and 2D titania carbide (Ti3C2Tx-MXene) followed by in-situ thermal polymerization of porous carbon nitride (g-C3N4), the catalyst leverages sunlight penetration through transparent packgng layers to selectively target interfacial adhesives. Crucially, the existence of Ti3C2Tx enhances charge separation and interfacial transfer, enabling efficient adhesive decomposition without physical contact. Experimental validation confirms effective degradation of packaging-simulated PU adhesives under natural sunlight irradiation.
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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Lili Zhu,Na Li,Hao Zhang,Junrong Yu,Zuming Hu,Yan Wang
The development of high-performance and lightweight microwave absorption materials (MAMs) requires effective strategies such as constructing multicomponent hetero interfaces and integrating multiple loss mechanisms. In this study, a series of magnetic CoNi@CNT nanoparticles were synthesized via a solvothermal method followed by thermal treatment, with the metal source ratio (Co/Ni) systematically adjusted to optimize their microstructure and electromagnetic wave absorption properties. The sample with a Co/Ni molar ratio of 1:1 was identified as the optimal magnetic component. Furthermore, porous MXene (PMXene) was employed as a dielectric substrate and combined with Co1Ni1@CNT through electrostatic self-assembly to form a hierarchical PMXene/CoNi@CNT hetero structure with synergistic dielectric–magnetic properties. This architecture not only enhanced interfacial polarization through multicomponent heterointerfaces but also improved impedance matching and attenuation capability via magnetic loss from CoNi alloys and extended conductive networks from CNT/PMXene. As a result, the composite with a dielectric-to-magnetic ratio of 1:1 at a low filler loading of 8 wt % exhibited a minimum reflection loss (RLmin) of −50 dB and an effective absorption bandwidth (EAB) of 4.3 GHz at a thickness of 1.5 mm, significantly outperforming pure PMXene (RLmin = −35 dB, EAB = 1.9 GHz). This work demonstrates the synergistic advantages of integrating MOF-derived magnetic components with two-dimensional dielectric substrates for high-efficiency microwave absorption, providing new insights into the design of advanced, lightweight electromagnetic functional materials.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Binkai Yuan,Guibin Tan,Gengzhe Shen,Liuyan Zhang,Xinyu Tian,Yang Yang,Suye Li,Yidong Huang,Xingyu Zhu,Zeyi Guan,Fujian Guo,Yanmei Zhang
To overcome waterborne epoxy coating’s limitations (poor long-term corrosion resistance, insufficient self-healing, microdefect-induced penetration), this study developed a high-performance smart anti-corrosion coating modified with MXene-Ni@C-ODD composite filler and regulated by magnetic field. The filler was facilely prepared via pyrolysis of MXene-Ni-MOFs (Ti 3 C 2 T x −Ni 3 HHTP 2 ) and subsequent loading of ODD(1-(2-Aminoethyl)-2-heptadecenyl-2-imidazoline, diethylsulfate salt). Electrochemical tests in 3.5 wt% NaCl showed the magnetically regulated (MMO) coating exhibited optimal performance, outperforming Blank, ODD, and MO coatings: after 60-day immersion, its achieved a charge transfer resistance ( R ct ) of 1.02 × 10 10 Ω·cm 2 (7.2 times that of the Blank coating; corrosion current density ( i corr ) of 1.78 × 10 −13 A·cm −2 (1/2.6 of that of the Blank coating) and corrosion potential ( E corr ) of −0.1791 V. MXene-Ni@C’s mesoporous structure (specific surface area: 147.812 m 2 /g) mitigates ODD-induced epoxy curing interference and enables responsive ODD release, while its ferromagnetism (saturation magnetization: 10.59 emu/g) allows magnetic field-driven parallel filler alignment. Scratch tests confirmed self-healing ability via ODD release triggered by exposed metal substrate’s electronegativity. This “magnetically enhanced physical barrier + ODD self-healing” synergy support for high-performance smart anti-corrosion coatings.
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高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2025
·
IF 4.6
Wenjuan Zhang,Qiaohong Zhang,Xiangyue Yang,Mengyu Ran,Yezhi Ding,Peiqing La
Conventional homogeneous catalysts for photo-Fenton reactions suffer from inherent drawbacks, including difficult recovery, poor stability, and rate-limiting steps, which significantly restrict their practical application. To overcome these challenges, a novel photo-Fenton catalytic support, MXene–porous polydopamine (MPP), was fabricated via an interfacial co-assembly strategy. Subsequently, nano zero-valent iron (Fe) was anchored onto the MPP framework to construct a magnetic MXene–porous polydopamine (Fe/MPP) catalyst. The unique multi-interfacial porous structure of Fe/MPP facilitates efficient mass and electron transport, while the synergistic effects of Fe redox cycling and phenol–quinone conversion under light irradiation enhance the Fe 3+ /Fe 2+ regeneration process. As a result, Fe/MPP achieved outstanding photo-Fenton degradation performance, removing 99.89 % of methylene blue (MB, 4 g/L) within 30 min, surpassing most previously reported homogeneous catalysts. Moreover, Fe/MPP exhibits excellent reusability, maintaining over 53 % degradation efficiency after ten consecutive cycles. These results demonstrate that Fe/MPP exhibits high photo-Fenton activity and cycling stability, showing promising potential for practical wastewater treatment applications.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yang Zhang,Kangxin Qi,Xiangxiang Pi,Qingqing Tang,Qingquan Xue,Wei Chen,Diwei Gu,Jian Xu,Shenao Zhang,Yusen Wang,Yunxia Liang,Bin Sun,Wangyang Lu
Developing miniaturization, adaptability and weavability wire-shaped supercapacitor (F-SC) with admirable electrochemical performance and exceptional mechanical properties, has been a pivotal issue for wearable system. Here, we fabricated flexible F-SCs assembled by heterogeneous polyaniline (PANI)/bacterial cellulose (BC)/Ti 3 C 2 T x (PBT) hybrid fiber. BC nanofibers , as both reinforcement and spacer, can link with the adjacent Ti 3 C 2 T x flakes together to enhance the mechanical properties and prevent the restacking of Ti 3 C 2 T x flakes to accelerate the ion diffusion. And the PANI nanoparticle plays a crucial role in providing more active sites to improve the electrochemical performance. Besides, the continuous Ti 3 C 2 T x sheet arrangement in hybrid fiber guarantees favorable conductivity and forms a smooth pathway for electron migration. Thus, the PBT fiber shows high mechanical property (123.42 MPa), mass capacitance of 337 F g −1 in 1 A g −1 , superior rate performance (129 F g −1 at 10 A g −1 ) and exceptional cycling stability (84.1 % capacitance retention after 10,000 cycling). Moreover, the solid-state symmetric F-SC displays capacitance of 259 F g −1 , 86 % capacitance retention after 10,000 cycles, maximum energy density of 7.28 Wh kg −1 and favorable mechanical endurance, which displays a promising future in smart wearable system.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Shuman Feng,Zezhen Zhang,Zekun Zhou,Lili Wu
This study developed a novel thin-film nanocomposite (TFN) membrane using vacuum-assisted deposition and surface chemical crosslinking by integrating MXene nanosheets with a tannic acid (TA) and polyethyleneimine (PEI) crosslinked network onto a PVDF substrate. A series of tests were conducted to characterize the chemical structure and surface morphology of the membranes, as well as to measure the concentrations of dye wastewater and saline solutions before and after filtration. The results showed that the introduction of the phenol-amine network altered the surface properties of the MXene layers, reducing the water contact angle to 49.8° and resulting in a negative zeta potential in the pH range 4–10. The optimized TFN-2 membrane achieved 100% removal of cationic dyes (methylene blue, malachite green, crystal violet), with rejection rates of 98.52%, 97.12%, and 100% for methylene blue, Congo red, and Coomassie brilliant blue G, respectively, and also exhibited certain salt ion rejection capability. Moreover, the introduction of the phenol-amine network significantly enhanced the oxidative stability of MXene. The TFN-2 membrane maintained stable flux and removal efficiency during 12 h of continuous operation and retained excellent separation performance after 90 days of storage. This study provides a new approach for developing high-performance separation membranes.
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CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Chao Peng,Ping Wei,Xin Chen,Yongli Zhang,Feng Zhu,Yonghai Cao,Hongjuan Wang,Hao Yu,Feng Peng
2D MXenes have attracted extensive attentions owing to their anisotropy, high conductivity and other extraordinary properties. The popular preparation method of MXenes usually involves HF in high concentrations, which has seriously restricted their pervasive applications. In this work, a new hydrothermal route with low-toxicity etching agents (NaBF 4 , HCl) was used to synthesize Ti 3 C 2 MXene ( h- Ti 3 C 2 ). Compared with the Ti 3 C 2 prepared by the traditional HF etching method ( t- Ti 3 C 2 ), the h- Ti 3 C 2 has the higher c lattice parameter , larger interlayer distance and larger BET specific surface area, because of the slow release mechanism during the hydrothermal process. The hydrothermal etching method not only avoided the use of high-concentration HF, but also was more efficient to prepare Ti 3 C 2 flakes. Moreover, the hydrothermal etching route can be extended to other MXene materials, e.g. Nb 2 C. We demonstrated that the h -MXenes have better adsorption performance of methylene blue and methyl orange dyes. The hydrothermal etching route proposed in this study enabled the environmental benign and high efficiency exfoliation of MXenes, displaying the promise to facilely prepare 2D MXenes and paving a way to their widespread applications.
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高影响因子
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