Journal of Materials Chemistry A
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2025
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IF 9.5
Junxiu Piao,Tianyi Li,Xu Han,Xiaoran Yang,Linze Jin,Zongyao Zhang,Yujie Ping,Sheng Bi
Ti3C2Tx MXene/polymer composites demonstrate a massive potential for multifunctional application in various fields, particularly fire safety enhancement. Unfortunately, designing MXene/polymer composites with a balanced combination of mechanical robustness, high-temperature resistance, high flame responsivity, rapid-fire response, and ultralong alarm duration remains challenging. Here, a bio-inspired, cross-scale, hierarchical design was employed to fabricate an intelligent MXene-based nanocoating (PMS) through the evaporation-induced self-assembly of molecular polyvinyl alcohol, nanometer polydopamine coated silica, and nanometer to micron MXene. This design leverages a bioinspired interaction network, which enhances both strength and toughness, improving the tensile strength and Young's modulus by 210% and 72%, respectively, compared to unoptimized systems. Furthermore, the incorporation of ceramic fusion-assisted carbonization within the MXene-based bionic network endows PMS with exceptional flame retardancy (VTM-0), high flame responsiveness (> 105), ultrafast fire alarm response (~ 0.85 s), and ultralong alarm duration time (> 2930 s). These attributes position PMS as an advanced FAS material with intrinsic fire safety and active fire-fighting performance. This work provides an innovative strategy for designing MXene-based smart materials and advancing high-performance fire warning technologies.
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高影响因子
Journal of Materials Research and Technology-JMR&T
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2025
·
IF 6.6
Suhang Hou,Libo Wang,Lina Huang,Bo Wang,Weiwei Zhang,Jian Xie,Yihang Feng,Xinxin Cao,Aiguo Zhou
Polyimide (PI) is well known for its excellent thermal stability and mechanical strength, but its limited thermal conductivity and tribological performance restrict broader applications under harsh conditions. In this work, Ti 3 C 2 T x MXene nanosheets were incorporated into a PI matrix via in-situ polymerization to fabricate high-performance Ti 3 C 2 T x /PI nanocomposites with uniform filler dispersion. The thermal conductivity of the composite reached 1.99 W m −1 K −1 at 20 wt% MXene loading—an increase of 123% over pure PI. The thermal degradation temperature at 10% weight loss (T d10 ) also improved from 577.6 °C to 587.0 °C. Additionally, both storage modulus (E s ) and glass transition temperature (T g ) increased, indicating improved rigidity and thermal resistance. Tribological tests at room temperature and 200 °C revealed that the addition of 5 wt% MXene effectively reduced the coefficient of friction (COF) by 6.52% and 5.37%, respectively. The wear rate was also significantly reduced—by 83.41% at room temperature and 39.66% at 200 °C. These enhancements are attributed to the formation of a continuous and robust transfer film composed of MXene, oxides, and friction-induced organic products. This work provides a promising route for high-performance PI-based composites with improved thermal and tribological functionalities.
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JOURNAL OF SOLID STATE CHEMISTRY
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2021
·
IF 3.498
Xu-Ping Jiang,Bang-Zhou Tian,Qiang Sun,Xu-Liang Li,Jie Chen,Jun Tang,Ping Zhang,Lei Yang,Zhi-Gang Chen
As a promising alternative to the toxic PbTe-based thermoelectric materials, eco-friendly SnTe has attracted considerable attention. Here, we use a facile solvothermal method to in-situ synthesize MXene/SnTe nanocomposites. Comprehensive characterization results indicate that the incorporation of two-dimensional MXene in SnTe matrix can suppress Sn vacancies to result in a reduced carrier concentration and induce abundant MXene/SnTe interfaces, which simultaneously optimizes the electrical and thermal transport properties. As a result, with the optimized MXene content, the maximum figure of merit of ∼0.63 at 823 K is obtained in SnTe with 0.6 wt% MXene, which shows a 60% enhancement compared to pristine SnTe. This work explores a new strategy to introduce two-dimensional MXene into SnTe-based materials with improved thermoelectric properties, which can inspire new pathways into designing and synthesizing high-performance thermoelectric materials .
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ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Zhiming Deng,Pingping Tang,Xinyu Wu,Hao-Bin Zhang,Zhong-Zhen Yu
Although hydrophilic and electrically conductive transition-metal carbon/nitride (MXenes) nanosheets hold great promise for electrically conductive and electromagnetic interference (EMI) shielding applications, the weak interaction among MXene nanosheets makes them difficult to form compressible three-dimensional architectures with high conductivity. Herein, inspired by the plant “Parthenocissus tricuspidata”, an efficient approach is demonstrated to fabricate conductive and lightweight Ti3C2Tx MXene/acidified carbon nanotube anisotropic aerogels (MCAs) with superelasticity and high thermal insulation. The MXene nanosheets construct the anisotropic and porous skeleton, while the acidified carbon nanotubes reinforce the pore walls of MXene nanosheets, making the MCAs superelastic and compressible. The superelastic MCA with only 5 wt % of the acidified carbon nanotubes is structurally stable during cyclic compressions at both high and ultralow temperatures. Its high conductivity (447.2 S m–1) and ultralow density (9.1 mg cm–3) endow its paraffin composite with a high EMI shielding efficiency of ∼51 dB at an ultralow filler content of 0.3 vol %. When the density of MCA increases to 18.2 mg cm–3, its EMI shielding effectiveness reaches 90 dB. Additionally, the porous and ultralight MCAs exhibit better thermal insulation performances as compared to commercial melamine and polystyrene foams. Therefore, the superelastic, electrically conductive, lightweight, and thermally insulating MCAs would be promising for EMI shielding applications in space equipment and portable wearable devices.
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高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yijun Gao,Ping Xue,Lijun Ji,Xin Pan,Lining Chen,Wei Guo,Mi Tang,Chengliang Wang,Zhengbang Wang
Conjugated quinones are promising cathode materials for sodium-ion batteries. However, the contemporary primary conjugated quinones cathodes still hold to limited capacity, poor rate performance and low cyclability, due to the poor electronic and ionic conductivity. Herein, a series of high-performance conjugated-quinones@MXene hybrid cathodes is constructed by an in situ polymerization-assembly strategy based on the hydrogen bond and S–Ti interaction. The PAQS@Ti3C2Tx MXene hybrid, as a typical example, exhibits sandwiched structure with intimate PAQS@MXene contact, resulting in efficient interfacial mass transfer. The assembled MXene is able to build interconnected conductive channels in the hybrid cathodes for continuous and fast electrons/ions transport, which is verified by both the experimental results and density functional theory (DFT) calculations. As a result, the optimal PAQS@MXene hybrid electrode delivers excellent electrochemical performances with high capacity (∼242 mA h g–1 at 100 mA g–1), superior fast-charge/discharge ability (∼148 and 121 mA h g–1 at 5 and 10 A g–1, respectively), and ultralong cycle life (capacity as high as 57 mA h g–1 after 9000 cycles at 5 A g–1), which are more superior to that of the pure PAQS electrodes. Besides, the analogous PPTS@Ti3C2Tx MXene hybrid cathode also shows better performances compared to the pure materials.
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高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Yangyang Wang,Xue Wang,Bingcheng Ge,Jianxin Guo,Carlos Fernandez,Qiuming Peng
The Li–CO2 battery is a potential energy storage device that not only possesses a theoretical energy density as high as 1876 W h kg–1 but also alleviates the consumption of fossil resources by converting the greenhouse gas CO2 into electric energy. However, some technique bottlenecks, such as high overpotential, low recyclability, and low energy density, severely prohibit its application rhythm. Here, we prepare a binder-free MXene–MnO2 composite film using vacuum-assisted filtration and in situ reduction, which can be used as a freestanding cathode for Li–CO2 batteries. This MXene–MnO2 film electrode bestows good cycle stability (∼220 cycles), high specific capacity, and lower overpotential (∼0.89 V) in Li–CO2 batteries. Both experimental tests and first-principles calculations reveal that the enhanced electrochemical properties are associated with three aspects. First, the MXene–MnO2 film offers a high electrical conductivity and porous structure, which provide fast transport channels for electrons and ions. Then, the replacement of Mn by Ti increases the adsorption of Li ions, which facilitates the rapid decomposition of Li2CO3. Finally, the synergistic effect of MXene and MnO2 exposes a large number of active sites, which increases the capacity of Li–CO2 batteries. Therefore, this self-supporting strategy on the MXene composite paves a way to develop high-performance Li–CO2 batteries.
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Small
·
2026
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IF 11.8
Yunzhongze Hu,Na Ya,Haonan Li,Xiaoling Liu
Recycled carbon fibres offer a promising sustainable route to functional composites, but their short length and disordered connectivity limit controlled electromagnetic and thermal transport. Here we use electrostatic flocking to construct vertically aligned rCF@Ti 3 C 2 T x /NiFe 2 O 4 arrays within a polydimethylsiloxane (PDMS) matrix inspired by the hierarchical host–symbiont of marine sponges. The aligned architecture redistributes conductive pathways and interfacial polarization, improving impedance matching while providing through-plane heat transport channels. Compared with the randomly dispersed composite, the vertically aligned composite at the same loading ratio deepens the minimum reflection loss (RL min ) from −33.62 to −60.71 dB. The Effective absorption bandwidth (EAB) broadens increase from 3.91 to 7.82 GHz. In thermal-transport comparison, vertical alignment raises the through-plane thermal conductivity from 0.18 to 4.03 W m − 1 K − 1 . These results suggest that alignment control is an effective route to upcycle short recycled fibres into multifunctional polymer composites.
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JOURNAL OF POWER SOURCES
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2020
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IF 8.247
Yangyang Luo,Yapeng Tian,Yi Tang,Xingtian Yin,Wenxiu Que
Constructing multifunctional hierarchical nanocomposites is a promising strategy for enhancing the structural stability and electrochemical reaction kinetics of electrode materials . Herein, the two-dimensional (2D) hierarchical NiCoS/d-Ti 3 C 2 composite is successfully synthesized through a co-precipitation and in situ sulfuration process, and shows interconnected porous network of NiCoS nanoplates on 2D d-Ti 3 C 2 nanosheets . Interconnected porous network of NiCoS nanoplates can provide large surface area and rich open pores, thus leading to much redox reaction sites, while 2D d-Ti 3 C 2 nanosheets with high conductivity can not only act as conductive channels for charge transfer rapidly, but also alleviate volume change of NiCoS. Benefited from the synergistic interaction between two components, the NiCoS/d-Ti 3 C 2 composite electrode exhibits an enhanced specific capacity of 758.9 C g −1 at a current density of 1 A g −1 and good rate capability. The assembled hybrid supercapacitor (HSC) by using NiCoS/d-Ti 3 C 2 composite as positive electrode and activated carbon (AC) as negative electrode delivers a high energy density of 22.6 Wh kg −1 at the power density of 0.4 kW kg −1 based on the total mass of active materials, and shows a good cycling stability. Our work provides a prospective and feasible strategy for the fabrication of hierarchical transition metal sulfides-based composites for high-performance supercapacitors .
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WATER RESEARCH
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2022
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IF 13.4
Tao Zhang,Li-Zhi Zhang
Seawater desalination is regarded as a possible way to overcome current shortages of fresh water, and membrane-based air humidification–dehumidification desalination (MHDD) represents a promising technique owing to its high-quality freshwater and cost-effectiveness; however, its development is restricted by membrane fouling. While a superhydrophobic membrane provides resistance to hydrophilic fouling, it remains susceptible to hydrophobic fouling. Here, a polyvinylidene fluoride-ZnO/MXene (PVDF-ZM) membrane, with a reversible conversion between superhydrophobicity and hydrophilicity was fabricated to achieve universal fouling resistance. It earned a competitive permeate flux (3.93 kg·m −2 ·h −1 ) and an excellent salt rejection (>99.5%). The membrane exhibited a strong anti-hydrophilic fouling ability, benefiting from its superhydrophobicity and rough surface. The adsorbed hydrophobic contaminants could desorb from the membrane surface under UV irradiation when transforming the surface wettability into hydrophilicity, exhibiting an anti-hydrophobic fouling ability. Subsequently, the membrane surface returned to the hydrophobic state under dark conditions. The membrane recovered 90% of the original permeation flux, while maintaining a salt rejection of >99.5%, thus realizing membrane self-healing. The PVDF-ZM membrane holds promise for sustainable desalination applications.
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高影响因子
ChemElectroChem
·
2022
·Vol. 9
·期 22
·e202200715
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IF 4.782
Wei-Xiang Cheng,Yi-Zhao Chen,Song-Yi Liao,Jun-Qi Hu,Cun-Sheng Liu,Shuai-Fu Cui,Xing-Wen Huang,Yidong Liu,Yonggang Min
Graphical NIB news : MoS 2 anchored on nitrogen-doped MXene nanosheets with carbon coating were prepared and applied in Na-ion batteries (NIBs). It remained at ∼308 mAh g −1 at 0.5 A g −1 after 300 cycles and showed higher rate performance of ∼189 mAh g −1 at 4 A g −1 . The MoS 2 @N-MXene/C heterogeneous nanosheets showed enhanced pseudocapacitance effects of 84.5 % at a scan rate of 2 mV s −1 according to CV curves simulation. Currently, Na-ion batteries (NIBs) have emerged as a new generation of energy storage devices. However, due to the lack of suitable anode materials, the large-scale practical application of NIBs is still greatly limited. Therefore, to address this issue, an effective strategy towards an advanced NIBs anode was developed by achieving MoS 2 anchored on nitrogen-doped MXene nanosheets with carbon coating (shorten as MoS 2 @N-MXene/C). The structure, surface chemistry state and micromorphology of MoS 2 @N-MXene/C were carefully analyzed and characterized by XRD, XPS and SEM/TEM, respectively. It was shown that MoS 2 was loaded on N-MXene to form a heterogeneous nanosheets structure. When applied to the anode of NIBs, MoS 2 @N-MXene/C delivered ∼189 mAh g −1 at 4 A g −1 and remained at ∼308 mAh g −1 after 300 cycles at 0.5 A g −1 . Moreover, based on the simulation and calculation from CV curves, the enhanced electrochemical performances of MoS 2 @N-MXene/C was assigned to its high pseudocapacitance-dominated contribution (84.5 % at a scan rate of 2 mV s −1 ). Therefore, owing to the highly conductive N-MXene and the actively anchored MoS 2 , MoS 2 @N-MXene/C could effectively provide efficient channels for charge transfer and ionic diffusion. The presented design strategy may provide a guidance for developing more-efficient NIBs anode.
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Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 10
·5416-5425
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IF 10.733
Yapeng Tian,Wenxiu Que,Yangyang Luo,Chenhui Yang,Xingtian Yin,Ling Bing Kong
Supercapacitors (SCs), environment-friendly high-power energy storage devices, have drawn great attention due to the increasing and urgent development of renewable energies. Ti3C2Tx (MXene), a 2D high conductivity material, has been shown to be a potential electrode material for SCs, because of its outstanding chemical and physical properties. However, the surface termination of –F and –OH could block the transport of electrolyte ions and thus decrease the energy storage performances. In this regard, nitrogen related functional groups have been introduced to modify the surface characteristics of Ti3C2Tx, in order to increase the electron conduction and energy storage capacity. Experimental results have shown that the presence of moieties such as –NH2, Ti–O–N and O–Ti–N, could offer a synergistic effect on the electrochemical performance of SCs, which is mainly attributed to the intercalation-pseudocapacitance contribution according to the quantitative analysis. Furthermore, the role of O–Ti–N is more significant than that of Ti–O–N. Specifically, for the first time, we demonstrate that electrodes based on the N surface modified Ti3C2Tx film display largely enhanced electrochemical performances, with gravimetric capacitance of 415.0 F g−1 at 2 mV s−1, rate capacity of 75.9% at 200 mV s−1 and cycling stability of above 90% retention after 18 000 cycles. In addition, symmetric SCs based on the N–Ti3C2Tx-300 film could deliver a maximum volumetric energy density of 21.0 W h L−1 and an energy density of 10.2 W h L−1, at a high power density of 18.3 kW L−1.
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2022
·
IF 9.463
Kaili Gong,Lin Cai,Congling Shi,Feiyan Gao,Lian Yin,Xiaodong Qian,Keqing Zhou
It is a challenge to integrate organic and inorganic materials to build organic–inorganic hybrid, high-efficiency flame retardants with synergistic effects of both to diminish the fire risks of polymer composites . In this work, an organic–inorganic hybrid strategy was used to prepare leaf-like MXene-based flame retardants (MXene@Bi-MOF) by in situ growth of bimetallic metal–organic frameworks (Bi-MOF) on the surface of MXene and the hybrids were incorporated into epoxy resins to explore their flame retardancy and smoke suppression effects. Specifically, the introduction of MXene@Bi-MOF hybrids not only achieved homogeneous dispersion in EP matrix, but also improved the thermal properties of EP composites, with a 27.7% lower maximum mass loss rate ( R max ) than that of pure EP. In addition, EP composites containing 2 wt% MXene@Bi-MOF exhibited improved fire safety, reduced heat release and inhibited smoke production, as evidenced by a 28.8%, 45.3%, 36.5%, 30.7% and 55.3% drop in peak heat release rate (PHRR), peak smoke production rate (PSPR), total heat release (THR), peak CO production rate (PCO) and smoke factor (SF) value, respectively, as well as growing char yields and lower fire growth index (FGI) value, compared to those of pristine EP. The synergistic action of MXene and Bi-MOF, mainly including the blocking effect of MXene lamellar structure , catalytic carbonization effects as well as catalytic attenuation of the transition metal oxides and gas phase dilution from Bi-MOF, was primarily responsible for the improved fire safety of EP composites.
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