JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Zhang Liping,Liu Xingmin,Zhao Zihan
Vanadium redox flow batteries (VRFBs) are a critical technology for large-scale energy storage, and their electrode properties directly determine catalytic activity and structural stability. In this study, copper clusters anchored on MXene sheets (MXene/Cu) are designed as a novel electrocatalyst for the V 3+ /V 2+ redox reaction. The catalytic performance was systematically evaluated through cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). For battery performance tests, single cells were assembled using plasma-treated graphite felt coated with the MXene/Cu composite as the negative electrode (MXene/Cu/GF). The results demonstrate that MXene/Cu significantly enhances the catalytic activity of the electrode. At a current density of 200 mA cm −2 , the cell employing MXene/Cu/GF as the negative electrode exhibits a 22.53% improvement in energy efficiency compared to plasma-treated graphite felt. Remarkably, after 200 charge–discharge cycles, the composite demonstrates exceptional stability, exhibiting only 5.20% total capacity decay. This superior performance is attributed to the synergistic interaction between Cu clusters and MXene, which introduces abundant active sites on the graphite felt electrode and accelerates the reaction kinetics of the V 3+ /V 2+ redox couple, thereby enhancing overall cell performance. This work confirms that integrating atomic-level catalysts with two-dimensional MXene offers an effective strategy for advancing VRFB technology.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 27
·19662-19672
·
IF 4.4
Zhang Qiuping,Ran Mengyuan,Cui Kun,Yang Xiaojie,Zhang Hao,Xiao Lina,Wu Yanling,Wang Zhuosen
In the lithium–sulfur (Li–S) batteries, developing catalytic materials to accelerate polysulfide redox kinetics and effectively mitigate the shuttle effect is crucial, as nonpolar carbon materials provide only physical confinement without offering catalytic activity. In this work, a novel functional interlayer is constructed by uniformly anchoring silver quantum dots (AgQDs) onto a MXene substrate, forming an AgQDs@MXene composite. This engineered interlayer is introduced into Li–S batteries to simultaneously address the challenges of polysulfide shuttle and sluggish redox kinetics. The abundant surface functional groups and high conductivity of MXene, coupled with the strong chemisorptive interactions and catalytic activity of AgQDs, enable effective immobilization of soluble lithium polysulfides and accelerated conversion reactions during cycling. As a result, Li–S batteries assembled with the AgQDs@MXene interlayer exhibit remarkable electrochemical performance, including enhanced capacity retention, prolonged cycling stability, and excellent rate capability. These improvements significantly outperform cells with conventional polypropylene (PP) separators, highlighting the potential of AgQDs@MXene as a multifunctional interface for high-energy–density and long-life Li–S batteries. Graphical abstract The alternative text for this image may have been generated using AI.
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高影响因子
Device
·
2026
·
IF 8.7
Caiyun Zhao,Tao Dong,Xiaolan Ji,Shoue Chen,Jianjun Luo,Hua Yuan,Yaokun Pang
Flexible fiber electrodes have attracted considerable attention for wearable electronics and biological tissue engineering. However, simultaneously achieving high electrical conductivity, mechanical robustness, and multifunctionality remains a significant challenge because conductive materials generally exhibit limited stretchability, while most functional nanomaterials are intrinsically brittle. Here, we construct coaxial wet-spun core-shell composite fibers (MXene@sodium alginate/cellulose nanocrystal/glycerol [MX@SCG]) with a sodium alginate/cellulose nanocrystal/glycerol supporting core and a conductive outer MXene sheath. The flexible sodium alginate matrix offers mechanical protection for fragile MXene nanosheets, endowing fibers with a conductivity of 1,852 S/cm and tensile strength of up to 149 MPa. Such fibers deliver electrothermal conversion performance and visible thermochromic color switching and can be woven into single-electrode triboelectric nanogenerators.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124205
·
IF 7.5
Kaige Chen,Jie Li,Yongxiang Wang,Yong Dai,Yongming Luo,Xiaohua Cao,Xiaoping Xing
Photothermal conversion of CO 2 to methane offers a promising pathway for simultaneous carbon recycling and renewable energy storage. To date, Ni-based catalysts dominate CO 2 methanation. However, their low-temperature activity under photothermal conditions still requires improvement. MTiO 2 derived from Ti 3 C 2 MXene retains its two-dimensional (2D) layered structure and excellent photothermal conversion properties. Herein, we synthesized Ru-Ni@MTiO 2 catalysts through hydrothermal treatment of Ni-impregnated MTiO 2 with controlled Ru loading ( x = 1, 3 and 5 wt%). The optimal 3Ru-Ni@MTiO 2 catalyst achieved a CH 4 production rate of 86.25 mmol·g −1 ·h −1 at 300 °C, which is 1.3-fold higher than that of the Ru-free Ni@MTiO 2 counterpart. The superior catalytic performance stems from the synergistic electronic effect between Ni and Ru and their dual-site cooperation. Electron transfer from both Ru and MTiO 2 to Ni sites elevates the electron density of metallic Ni, which weakens the H-H bond and accelerates the dissociative adsorption of H 2 . Furthermore, Ru loading not only broadens the light absorption range and promotes photogenerated charge separation, but also increases the density of moderate basic sites, thus boosting CO 2 adsorption and activation. This work provides new insights into the design of bimetallic photothermal catalysts for CO 2 methanation.
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Saifei Du,Lei Ding,Shuqi Li,Kun Wang,Baojiang Liu,Wei Wang,Dan Yu,Chunyan Hu
MXene-based aerogels are promising for electromagnetic interference (EMI) shielding due to their lightweight nature and high conductivity. However, their practical application is often hindered by severe impedance mismatch and excessive secondary reflection. To overcome this limitation, we developed a multifunctional ternary composite aerogel (MTCA) via a synergistic self-assembly strategy. In this architecture, TpPa-1 covalent organic framework (COF) was grown in situ and integrated with MXene nanosheets within a chitosan matrix. The resulting hierarchical porous structure significantly optimizes impedance matching. Consequently, the optimized MTCA achieves an EMI shielding efficiency of 39.93 dB in the X-band, operating via an absorption-dominated mechanism. This performance stems from enhanced interfacial polarization at the MXene/COF heterojunctions and prolonged microwave propagation paths facilitated by multiple scattering within the porous network. Furthermore, the aerogel exhibits multispectral stealth capabilities: it demonstrates low infrared emissivity (ε = 0.50), superior thermal insulation (surface temperature of 28.7 °C under an 80 °C heat source), and effective visual camouflage adaptable to environmental backgrounds. This work presents a robust strategy for designing advanced stealth materials that integrate efficient absorption-dominant EMI shielding with multispectral compatibility.
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 31
·22710-22728
·
IF 4.4
Wang Yanming,Zhao Jiale,Li Lingwei,Zhang Yijiao,Wang Yao,Gao Xiaohong,Su Bihai,Li Feibo,Wang Xiaojing,Shi Linlin,Zhang Zhixiao,Zhang Xiaoliang,Mu Jingbo,Dong Yu
Proton exchange membranes (PEMs) attract attention for their tunable proton-conducting channels, but building effective transport networks and improving long-term stability in composites remain key challenges. In this study, a novel SPI composite PEM reinforced with 1,3-propane sultone-modified MXene/halloysite nanotube (SMH) fillers was successfully prepared. Systematic material characterization and performance tests revealed that the incorporation of SMH fillers significantly improved the physicochemical properties of the membrane. Moreover, the –SO 3 H groups on SMH and the –NH 2 groups on APTES can form hydrogen bonds and acid–base pairs with the –SO 3 H groups on SPI, thereby enhancing the tensile strength and proton conductivity of the composite film. The composite membrane exhibited a tensile strength of 80.3 MPa and a proton conductivity of 313.9 mS cm −1 (80 °C, 100% RH), representing 26.2% and 29.5% enhancements compared to the pristine SPI membrane, respectively. It assembled fuel cell with the SPI-2SMH composite membrane demonstrated a maximum power density of 259.1 mW cm −2 . More importantly, the radical scavenging effect of the variable-valence metal ions in MXene endowed the composite membrane with improved long-term stability under fuel cell operating conditions, extending the open-circuit voltage decay time to 3.3 times that of the pure SPI membrane. This study provides a new strategy for developing PEM materials with both high proton conductivity and enhanced durability for fuel cell applications. Graphical abstract
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高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Rui Wang,Ziqian Meng,Han Yan,Meiqi Yin,Jinfeng Huang,Hao Zheng,Jingtao Sun,Jiyun Nie,Wei Wu,Qinzhi Wang
Flexible CP-MXene@Au chip fabricated via layer assembly and electrodeposition. • MXene prevented Au NPs aggregation while preconcentrating analytes. • Electrodeposition enabled facile optimization of uniformity and reproducibility. • Thiophanate-methyl in fruits detected with good recovery and practical applicability. For the common fruit contaminant thiophanate-methyl (TPM) residue monitoring, a portable ultra-sensitive flexible surface-enhanced Raman scattering (SERS) chip was developed using carbon paper and electrochemical deposition technology for the rapid and efficient trace detection of TPM in fruits. The flexible chip was constructed using MXene (CP-MXene) through layer-by-layer assembly and plasmonic metal (CP-MXene@Au) by the chronopotentiometry method, which dramatically improved the intrinsic electrical conductivity contributing to forming SERS-active “hot spot” with superior stability and reproducibility. Based on prepared SERS chip, the TPM was rapidly detected as the lowest detection limit as 0.00923 μM and a wide detection linear range of 0.1–100 μM. Furthermore, TPM in fruits can be collected and recognized with excellent reusability and satisfactory recovery of 90.5–109.5%, demonstrating its good practical applicability. This flexible SERS chip is also highly sensitive and low-cost, providing a new idea for efficient food safety monitoring.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Yi Chen,Huayu Zhao,Jinze Li,Fujuan Peng,Yuanyuan Zhao,Qian Wang,Ruiping Zhang,Huifang Zhao
Fusiform TiO 2 nanoparticles is in-situ grew on the surface of HCl etching MXene. • MXene/TiO 2 heterojunction is served as the outstanding photoactive material in PEC platform. • This PEC aptasensor adopts the competitive displacement for sensitive and specific quantification of GP73. • The constructed PEC aptasensor is successfully applied to directly monitor GP73 in human serum samples. Golgi protein 73 (GP73) is a promising serological biomarker for the early diagnosis and prognosis of hepatocellular carcinoma (HCC), it is essential to develop a sensitive detection method for GP73. Benefiting from its high sp 2 graphitic degree, efficient photoinduced electron–hole transfer, and robust transport of photogenerated ion migration abilities, the MXene/TiO 2 heterojunction was employed to fabricate a competitive photoelectrochemical (PEC) aptasensor for sensitive GP73 detection. In this study, GP73 possessed higher affinity with GP73 Apt than cDNA, and competitively displaced cDNA from GP73 Apt upon the binding process. This MXene-based PEC aptasensor displayed a logarithmic linear response to GP73 in the concentration range of 7.3–3650 ng/mL with a limit of detection (LOD) of 0.42 ng/mL. Remarkably, this strategy was enabled to directly determinate GP73 in human serum samples of health control, esophageal cancer, gastric cancer, and HCC with analytical performance comparable to ELISA. Therefore, the proposed PEC sensing system may hold promising prospects for clinical detection of gastrointestinal cancers biomarker. The fabricated competitive displacement-triggered PEC aptasensor based on MXene/TiO 2 heterojunction is employed to directly determinate GP73 in human serum samples of hepatocellular carcinoma. Download: Download high-res image (115KB) Download: Download full-size image
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高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 10
·684
·
IF 5.4
Min Congyu,Sun Haifeng,Zhang Haixia,Zhang Jinzhu,Ding Min,Zhang Xiaoqing
An electrochemical aptamer-based (E-AB) sensor for myeloperoxidase (MPO) was developed that combined a gold nanoparticle /MXene scaffold with freeze-thaw-directed aptamer immobilization and probe-density optimization. Unlike using nanocomposite amplification alone, this strategy regulates probe density and accessibility at the bioreceptor layer to improve target-coupled signal transduction. Using the same aptamer solution, the freeze-thaw method yielded 60.77% greater MPO-induced signal suppression and a 2.4-fold lower regression-derived limit of detection (LOD) than conventional incubation. After target incubation for 50 min at 4 °C, the sensor showed a linear response from 5.00 to 250.0 ng/mL in 1% plasma matrix (equivalent to 500 ~ 25,000 ng/mL in undiluted plasma), with an LOD of 4.15 ng/mL (equivalent to 415 ng/mL in undiluted plasma). These results illustrated that coupling conductive nanointerface design with aptamer-layer organization might provide a practical route for antibody-free and H 2 O 2 -independent MPO determination. Graphical abstract
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Zhao Kunming,Wang Bo,Zhang Xiaofei,Liu Nana,Qian Haining,Peng Ruihui,Wang Xiangwei,Zhang Xuyang
MXene demonstrates considerable potential in the domains of electromagnetic interference (EMI) shielding and infrared camouflage due to its inherently high electrical conductivity. However, its vulnerability to structural and functional degradation under humid–thermal conditions severely limits its practical application. Herein, a synergistic dual-strategy design is proposed for the fabrication of a stable MXene-based film with enhanced oxidation resistance. Through dual modification with sodium lignosulfonate (LS) and tannic acid (TA), the antioxidative capability and mechanical strength of MXene are cooperatively enhanced. Moreover, by constructing conductive pathways between MXene layers via Al 3+ ionic intercalation, the conductivity compromised by polymer addition is effectively restored, a mechanism that is further substantiated by DFT calculations. It is evident that the rational design of the MXene/LS/PTA-Al 3+ film exhibits remarkable oxidation stability. Following a 30 day aging process in a humid–thermal environment, the film retains 92.18% of its original EMI shielding effectiveness, while the infrared emissivity undergoes only a marginal increase from 0.15 to 0.22, demonstrating excellent structural and functional durability. Consequently, the highly stable MXene/LS/PTA-Al 3+ film has significant potential as a durable electromagnetic-infrared compatible stealth material.
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 13
·1001
·
IF 3.2
Chen Huyue,Wang Jingrong,Lu Tengfei,Xu Deming,Xu Haiping,Yang Dandan,Chen Lifei
TiO 2 was deposited on the surface of Ti 3 C 2 T x MXene by the sol–gel method to construct core–shell structured MXene@TiO 2 fillers, which were then introduced into the PVDF matrix to prepare dielectric composite films. The effects of TiO 2 deposition ratio and filler loading on the dielectric properties of the composites were systematically investigated, and the thermal and mechanical properties of the optimized system were further evaluated. The results showed that the TiO 2 coating layer could construct an effective interfacial insulating structure, which enhanced interfacial polarization while suppressing carrier migration and the formation of leakage pathways, thereby enabling the synergistic regulation of dielectric constant and dielectric loss. When the TiO 2 deposition mass ratio reached 50%, the composites showed a more effective overall interfacial modulation effect. Under these conditions, the 15 wt% composite delivered the optimal overall dielectric performance, with a dielectric constant of 29.1 and a dielectric loss as low as 0.051, representing a significant reduction compared with that of the unmodified MXene/PVDF composite (0.59), and it also exhibited superior dielectric stability. At the same time, the thermal stability and mechanical performance of the composites were also enhanced. The study confirms that building a TiO 2 interfacial insulating layer is an effective approach to enhancing the dielectric performance of PVDF-based composites while realizing the coordinated optimization of multiple properties.
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高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Kui Cao,Yue Han,Fanen Zeng,Xin Wu,Yang Sun,Zihao Zhang,Xiuna Xue,Yu Shen,Bing Xu
The emergence of Ti 3 C 2 T X as a novel two-dimensional transition metal carbide catalyst support has sparked widespread research interest due to its high electrical conductivity and tunable surface chemistry. To address the inherent interlayer stacking limitations of conventional Ti 3 C 2 T X , the single-layer Ti 3 C 2 T X (SL-Ti 3 C 2 T X ) support was prepared via selective etching of aluminum from bulk Ti 3 AlC 2 , followed by liquid-phase exfoliation of multilayered Ti 3 C 2 T X into nanosheets. Subsequently, a high-performance Pt/SL-Ti 3 C 2 T X composite electrocatalyst was synthesized by in situ reducing Pt 2+ into Pt nanoparticles (Pt NPs) through an ethylene glycol-mediated reduction method. Electron microscopy analyses demonstrated that Pt NPs (~2.89 nm size) uniformly loaded on the wrinkled surface of SL-Ti 3 C 2 T X nanosheets with thickness of 1.5 nm. Raman spectrum analysis revealed the functionalization of the support SL-Ti 3 C 2 T X (T X : O, -OH and F), while the strong metal-support interaction (SMSI) between Pt NPs and SL-Ti 3 C 2 T X was indicated through XPS patterns of the sample. With an electrochemical active surface area (ECSA) of 176 m 2 ·g −1 and a half-wave potential (E 1/2 ) of 0.874 V, the produced composite catalyst outperformed Pt‑carbon (Pt/C) catalyst in acidic electrolytes in terms of oxygen reduction reaction (ORR) performance. After undergoing 30,000 cycles of accelerated durability testing (ADT), the Pt/SL-Ti 3 C 2 T X catalyst maintained 77% of its initial activity, with a mass activity loss of only 22%, while the corresponding data for Pt/C are 51% and 48%, respectively. Based on its unique advantages including the single-layer structure and surface functionalization, SL-Ti 3 C 2 T X could be used as a high-performance catalyst support to produce highly active and stable electrocatalysts for ORR in energy conversion field.
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高影响因子
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