JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Yanyang Wang,Ruixiang Wang,Jiaming Liu,Zhenping Qiu,Xiaohua Yu,Weilai Xu,Jinhui Li,Fupeng Liu
Engineered micro-nano heterogeneous architectures for transition metal phosphide (TMPs) anode materials in lithium-ion batteries (LIBs) provide multifunctional active components. These components synergistically interact to address pivotal challenges of pronounced volume expansion and sluggish reaction kinetics within the electrode. Consequently, this engineering design approach significantly enhances the overall battery performance. In this study, a self-assembled approach is employed to integrate hybridized NiFe-PBA nanocubes with two-dimensional (2D) monolayer MXene (Ti 3 C 2 T x ), producing a heterostructured NiFeP/C@Ti 3 C 2 T x composite. In this meticulously engineered architecture, the interface between the outer MXene layer and NiFeP embedded within the carbon matrix exhibits several distinct superiorities, such as rapid interfacial ion migration, multidirectional migration pathways, and strong spatial adaptability. The resulting non-uniform phase structure effectively mitigates electrode expansion and enhances electronic conductivity. Consequently, the NiFeP/C@Ti 3 C 2 T x -15 composite demonstrates distinct performance advantages over NiFeP/C without MXene. The composite achieves a specific capacity of 689.4 mAh g⁻¹ at 200 mA g⁻¹ over 300 cycles, double that of NiFeP/C. Furthermore, density functional theory (DFT) calculations validate the electronic conductivity facilitated by the heterointerface between MXene and NiFeP, substantiating the strategic significance of the heterostructure in advancing high-performance anode materials for lithium-ion batteries.
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高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Li Zhang,Chao Li,Yue Chen,Shaobin Li,Xue Wang,Fengbo Li
L-tryptophan (L-Trp) is crucial for human metabolism, and its imbalance or deficiency can lead to certain diseases, such as insomnia, depression, and heart disease. Since the body cannot synthesize L-Trp and must obtain it from external sources, accurately monitoring L-Trp levels in food is essential. Herein, a nanocomposite film based on polyoxometalate (P 2 Mo 17 V), Ti 3 C 2 T x MXene , and chitosan (Cs) was developed through a green electrostatically mediated layer-by-layer self-assembly strategy for electrochemical detection of L-Trp. The composite film exhibits fast electron transfer and remarkable electrocatalytic performance for L-Trp with a wide linear range (0.1–103 μM), low limit of detection (0.08 μM, S/N = 3), good selectivity, reproducibility, and repeatability. In milk sample, the recoveries of L-Trp were from 95.78% and 104.31%. The P 2 Mo 17 V/Cs-Ti 3 C 2 T x electrochemical sensor not only provides exceptional recognition and detection capabilities for L-Trp but also shows significant potential for practical applications, particularly in food safety and quality control .
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高影响因子
RARE METALS
·
2024
·
IF 9.6
Wang Wei-Wei,Huang Rui,Tao Yu,He Peng,Tuo Su-Xing,Bian Yu-Jian,Hu Rui-Ting,Yan Jun,Liang Yan-Jie,Zhang Wen-Chao
The electrochemical utilization of Zn anodes in aqueous batteries is hampered by the intricate and interconnected issues of Zn dendrite growth, H 2 evolution and Zn corrosion reactions. In this study, a multifunctional protective layer comprising MXene and graphitic carbon nitride (g-C 3 N 4 ) was constructed using a self-assembly strategy. The MXene/g-C 3 N 4 protective layer exhibited robust zincophilic characteristics, which facilitated a uniform distribution of the electric field and ensured a sufficient influx of Zn 2+ . This reduces the Zn 2+ nucleation barrier and prevents dendrite growth. In addition, the hydrophobic nature of the protective layer, coupled with its negative charge, can repel SO 4 2− and select water molecules from the electrolyte, which aids in mitigating corrosion and H 2 evolution. The symmetric Zn cell coated with the MXene/g-C 3 N 4 protective layer showed remarkable stability, achieving over 2000 h of reversible cycling at 1 mA·cm −2 . Furthermore, the MXene/g-C 3 N 4 -coated Zn anode paired with a sodium-doped V 2 O 5 cathode (NVO) exhibited enhanced cycling capability over 1500 cycles. Graphical Abstract
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ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Yuelin Lu,Jie Bai,Binbin Sun,Nannan Li,Zhenhuai Yang,Hailing Yu,Cong Wang,Cong Gu,Huan Liu,Peng Tang,Qiang Wang
MXene materials exhibit substantial energy storage capabilities owing to their high specific surface areas, tunable interlayer spacings, and excellent electrical conductivities. However, these layers are prone to re-stacking, negatively affecting the energy storage capacity of the material. Herein, through a process involving liquid nitrogen-assisted freeze-drying and subsequent annealing, Ti 3 C 2 T x nanosheets were combined with polyvinyl alcohol (PVA) polymer chains via hydrogen bonding to produce MXene and PVA-derived carbon composite aerogels (MPAs) with microstructures ranging from ordered to disordered arrangements. The incorporation of PVA inhibited nanosheet stacking, and PVA carbonization enhanced the electrical conductivity of the aerogel. The carbonized aerogel (MPA2.0) exhibited a larger specific capacitance along with a more disordered and denser microstructure, thereby accounting for the increased capacitance due to enhanced ion storage in the more structurally disordered carbon nanopores. The optimized MPA aerogel demonstrated a high power density, along with an excellent specific capacitance (MPA2.0 = 348.14 F g −1 , 2 mV s −1 scan rate), and a cycling stability of 92.52 % after 10,000 charge/discharge cycles. Furthermore, the MPA2.0-based supercapacitor obtained an impressive energy density (37.8 Wh kg −1 ) and an exceptionally high power density (1800 W kg −1 ) at a current density of 1 A g −1 . By adjusting the PVA loading, the shrinkage and stress–strain characteristics of the microstructure during freeze-drying and carbonization were altered, and the microstructural orientation of the resulting aerogels was controlled. The increased disorder in the aerogel enhanced its capacitor energy storage ability, providing a new approach for the design of multi-component high-performance hybrid supercapacitor electrodes.
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CATALYSIS LETTERS
·
2025
·Vol. 155
·期 2
·1-17
·
IF 2.4
Gan Wei,Guo Yan,Zhu Dan,Ling Min,Jiang Can,Zhang Shengfu
With the increasing problems caused by water pollution, the use of photocatalytic oxidation to remove pollutants from wastewater is a sustainable strategy. However, it is challenging to develop well-designed photocatalysts with high photo-quantum efficiency and the comprehension of their photocatalytic reaction mechanisms. Herein, a R/A-TiO 2 /Ti 3 C 2 T x (R: rutile; A: anatase) photocatalyst with different ratios of rutile and anatase phases was prepared by a facile hydrothermal method. The results showed that the number of rutile and anatase phases could be readily regulated by adjusting the dosage of titanium isopropoxide (TTIP) and Ti 3 C 2 T x . The prepared R/A-TiO 2 /Ti 3 C 2 T x -0.2 contained a mass fraction of 42% rutile phase and 58% anatase phase, with the interface between the two phases exhibited a tightly bonded structure. Meanwhile, the heterojunction between the heterophase TiO 2 and Ti 3 C 2 T x interfaces improved the photo-quantum efficiency of R/A-TiO 2 /Ti 3 C 2 T x , and the degradation efficiency of Rhodamine B (RhB) by R/A-TiO 2 /Ti 3 C 2 T x -0.2 was 77.82% in 2 h under ultraviolet light illumination. Ultimately, the active species capture experiments verified that the primary active species in the photocatalytic reaction was h + , ·OH, and·O 2 − . This work could shed light on the new approach to the rational design of high-efficiency heterophase TiO 2 -based photocatalysts. Graphical R/A-TiO 2 /Ti 3 C 2 T x photocatalysts with heterojunctions were controllably synthesized by an EDTA-2Na-assisted hydrothermal method.
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高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Huolin Zhong,Hui Fang,Zhao Yan,Fangjuan Wu
MXenes, two-dimensional transition metal carbides and nitrides, show great potential in various applications. However, traditional synthesis methods often involve toxic fluorine-containing etchants, limiting large-scale production. This study introduces a novel, environmentally friendly approach for synthesizing Ti 3 C 2 T x MXene nanosheets using stone grinding-assisted exfoliation and mild alkaline etching at 80°C. The synthesized MXene nanosheets exhibited high aspect ratios with transverse dimensions mostly on the micrometer scale and a thickness of approximately 3 nm, corresponding to one to two layers of Ti 3 C 2 . MXene/polyvinyl alcohol (PVA) composite membranes were fabricated to demonstrate practical applications. The composite membrane containing 1 wt% MXene achieved a 99.9% UV shielding rate while maintaining 67% visible light transmittance. Furthermore, it significantly enhanced PLA's UV resistance, with protected samples retaining 98.1% tensile strength after 48 hours of UV exposure, compared with 47.8% for unprotected PLA. This fluorine-free synthesis method addresses environmental concerns and enables large-scale MXene production for advanced UV protection applications. Highlights Ti 3 C 2 T x MXene is made via stone grinding and alkaline etching. MXene nanosheets are produced in the micron range and are 1–2 layers thick. The fluorine-free synthesis enables green, large-scale production of MXene. MXene/PVA films show 99.99% UV shielding with 67% visible light transmittance. MXene/PVA coating improves PLA's UV resistance, keeping 98.1% of tensile strength.
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Bailin Gai,Qinglong Jing,Yanan Ji,Runze Wu,Qi Li,Xuexia He,Jie Sun,Ruibin Jiang,Zhibin Lei,Zong-Huai Liu
In the present work, a new strategy to prepare Ti 3 C 2 T x aerogel fiber with ultralight, highly orientated and excellent gravimetric capacitance is proposed, it consists of wet spinning of self-assembling liquid crystal phase Ti 3 C 2 T x ink with waterborne polyurethane (WPU) as a functional additive in chitosan coagulated bath and followed by bidirectional freeze-drying process with Cu bridge as thermal conductive substrate, and Ti 3 C 2 T x /WPU (T/W) aerogel fiber with ultralight, highly orientated, good tensile strength, excellent gravimetric capacitance and rate performance is prepared. T/W-1 aerogel fiber electrode exhibits a low density of 0.15 g cm −3 , excellent gravimetric capacitance of 402 F g −1 at 1 A g −1 and an outstanding rate performance of 82 % at 10 A g −1 . All-solid-state Ti 3 C 2 T x aerogel fiber supercapacitor (T/W-1 aerogel FSC) with ultralight, good flexibility and high gravimetric capacitance is assembled, it not only shows a gravimetric capacitance of 124 F g −1 and an energy density of 6.2 Wh Kg −1 at a power density of 150.0 W kg −1 , but also displays a capacity retention of 97 % after 100 bending times at 180°. The impressing ultralight, good flexibility and high gravimetric capacitance make T/W-1 aerogel FSC a promising flexible power source in the fields of portable and wearable electronic devices.
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xiaoyang Zhu,Yang Zhang,Yu Zhang,Panpan Xie,Yunchuan Liu,Wenhui Zhang,Shenao Zhang,Yusen Wang,Guan Wu,Wangyang Lu,Nan Li
Customizing smart clothing for monitoring the physiological and vital sign information in real time has raised demands for wearable sensors with rapid response, good stability, high sensitivity and excellent mechanical properties. Herein, a flexible high-entropy doped oxide Cu 0.9 Fe 0.06 Ni 0.01 Cr 0.01 Co 0.01 Mn 0.01 (HE-Cu 2 O) nanoparticle modified Ti 3 C 2 T x (HECT) fiber was prepared through a facile hydrothermal growth and heat treatment process. Due to rich active sites, high reactivity and large surface area, HE-Cu 2 O appears impressive detection ability, admired adsorption inclination and exceptional reaction kinetics, confirming by DFT calculation. What’s more, the covalent coupling between the Ti 3 C 2 T x conductive frameworks and HE-Cu 2 O nanoparticles can further avoid the negative influence of metal oxide on the electronic conductivity, ensuring fast electron transfer rate. As a result, the HECT fiber can be operated in DA/PBS solution with reliable electrocatalyst properties, including low detection limit (1 μM), rapid response rate (<2 s), remarkable long-term cycling performance (100 cycling) and excellent reproducibility (RSD ≈ 2.01 %). Additionally, when the HECT fiber, matching with the Ag/AgCl electrode and Pt wire, weaves into the garment, the integrated system retains obvious response level, less response time (<5 s) and outstanding electrocatalyst performance under dynamic situations (bending, running, rope skipping and doing yoga), demonstrating a potential in practical application.
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高影响因子
CARBON
·
2024
·
IF 10.5
Yawen Zhang,Chengyi Si,Zhongpan Zhang,Le Li,Xiaoqiang Fan,Minhao Zhu
Self-lubricating coating has sparked significant research interest due to its remarkable tribology performance. However, traditional microcapsules-based self-lubricating coating still faces challenges in long-term serviceability and poor anti-corrosion performance. In this paper, a novel self-lubricating epoxy resin coating was proposed based on hierarchical design and energy wear theory. Microcapsules (MC) containing Polyalphaolefin (PAO40) were prepared via the solvent evaporation approach. Ti 3 C 2 T x MXene (T) with high thermal conductivity was then incorporated into the MC-enhanced epoxy resin coating (EP) to construct the novel self-lubricating EP coating (T-MC-EP). Compared to the EP coating, the thermal conductivity of the T-MC-EP coating increased by 79.4%. Finite element analysis indicated that T constructed thermally conductive network in the coating, serving as the main heat carrier. Furthermore, the wear rate decreased by 91.2%, primarily attributed to the formation of lubricating oil film during friction and the reduction of epoxy resin molecular oxidation fracture caused by friction heat. After 31 days of salt spray testing, the T-MC-EP coating also exhibited superior anti-corrosion performance. This work provides an innovative insight into designing multifunctional coating , including excellent mechanical, thermal, tribological, and anti-corrosive performance.
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高影响因子
Materials Today Chemistry
·
2024
·
IF 6.7
Zhuluni Fang,Yihan Liu,Jinteng Qi,Miao Yu,Yuhang Wang,Yunfeng Qiu,Zhuo Ma,Shaoqin Liu
Solar-driven interfacial water evaporation holds great promise for water purification and desalination, but challenges such as insufficient light absorption, suboptimal energy conversion, and microbial contamination hinder its practical applications. This study presents a novel Au@ZIF-8/Ti 3 C 2 T x alginate hydrogel, integrating nanocomposites into a three-dimensional hydrogel network to enhance both water transport and light-to-heat conversion. The incorporation of Au nanoparticles significantly improves light absorption, while the Schottky junction between ZIF-8 and Ti 3 C 2 T x promotes photocatalytic generation of reactive oxygen species (ROS), including superoxide radicals (O 2 − ) and singlet oxygen ( 1 O 2 ). This photocatalytic activity, combined with the photothermal effects of Ti 3 C 2 T x , leads to effective bacterial sterilization, achieving 99.54 % and 97.22 % antibacterial efficiency against E. coli and S. aureus , respectively. The hydrogel exhibits a high evaporation rate of 1.589 kg m −2 h −1 and demonstrates a 100 % steam sterilization rate against both bacterial strains under one sun illumination. These findings highlight the potential of the Au@ZIF-8/Ti 3 C 2 T x alginate hydrogel as a promising, efficient, and cost-effective sterilization strategy for various applications, including water purification, desalination, and disinfection in off-grid areas and specialized settings.
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高影响因子
POLYMER COMPOSITES
·
2024
·Vol. 45
·期 10
·9196-9208
·
IF 4.8
Ningmin Duan,Yong Li,Zhenyu Shi,Jilai Wang,Chengpeng Zhang,Xuefeng Tang,Guilong Wang
Nowadays, it is still a huge challenge to predict the interlaminar shear strength (ILSS) of three-phase carbon fiber reinforced polymer (CFRP). Herein, the three-phase micromechanical model is innovatively constructed to predict the ILSS of CFRP, and the conception of new matrix is proposed by establishing a connection between the third phase and the matrix, which effectively solves the problem of uneven distribution of the third phase. To verify the accuracy of the micromechanical model, the Ti 3 C 2 T x MXene/CFf/epoxy composites were fabricated by the co-blending, layer-by-layer assembly and hot-pressing technology, and the finite element simulation analysis was also performed based on the micromechanical model. The results show that the micromechanical model possesses high accuracy. Specifically, the experimental value of ILSS of the composite with 1 wt% Ti 3 C 2 T x MXene content is 52.12 MPa, and the errors of simulation value (56.64 MPa) and theoretical prediction value (58.69 MPa) are 8.67% and 12.61% MPa, respectively. Besides, the detailed fracture mechanism of the composite is presented based on the fracture morphology and simulation results. It is believed that this work will provide more possibilities for the prediction of the interlaminar shear performance of three-phase composites. Highlights A novel micromechanical model is used to predict the ILSS of three-phase composite. The accuracy of the micromechanical model is verified by simulation and experiment. The main failure form of the Ti 3 C 2 T x MXene/CFf/epoxy composite is matrix broken. The micromechanical model of the three-phase composites has high accuracy.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Debin Cai,Shuai Wu,Zhen Tian,Li Guo,Yanzhong Wang
The self-assembled aerogels are considered as an efficient strategy to address the aggregation and restacking of Ti 3 C 2 T x MXene nanosheets for high-performance supercapacitors. However, the low mechanical strength of the MXene aerogel results in the structural collapse of the self-standing supercapacitor electrode materials. Herein, a low-cost melamine sponge (MS) absorbed different cations (H + , K + , Mg 2+ , Fe 2+ , Co 2+ , Ni 2+ and Al 3+ ), serves as a carrier and crosslinker for loading MXene hydrogel induced by the absorbed cations on the skeleton surface and the pores of MS, resulting in the high loading mass MXene aerogels with high mechanical strength. The experimental results show that the Mg-Ti 3 C 2 T x @MS aerogel exhibits the maximum area capacitance of 702.22 mF cm −2 at 3 mA cm −2 , and the area capacitance is still 603.12 mF cm −2 even at 100 mA cm −2 , indicating the high rate capability with a capacitance retention of 85.89 %. It is worth noting that the constructed asymmetric supercapacitor with activated carbon achieves high energy densities of 104.53 μWh cm −2 and 93.87 μWh cm −2 at 800 μW cm −2 and 7999 μW cm −2 , respectively. Furthermore, the asymmetric supercapacitor shows the high cycling stability with 90.2 % capacity retention after 10,000 cycles. This work provides a feasible strategy to prepare Ti 3 C 2 T x MXene aerogels with large layer spacing and high strength for high-performance supercapacitors.
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高影响因子
危险品化学品经营许可证（带存储）