JOURNAL OF MATERIALS SCIENCE
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2025
·
IF 3.9
Cai Yanzhi,Ren Shaoxiong,Cheng Laifei,Guo Siyu,Yuan Yibing,Chen Mingxing,Yu Zixuan,Chai Yalong,Huang Xue,Zhou Yuan
Most of the reported carbon-polyaniline (PANI) electrode composites are powders or require flexible substrates, which hinders their potential applications in the flexible wearable electronics. Moreover, PANI structure collapses and shed loss due to the lack of effective support and protection results in low capacity retention. In this study, superflexible, binder-free and substrate-free carbon nanotube-polyaniline nanofibers/MXene (CP nf M) buckypaper were prepared by ultrasonic dispersion self-assembly and directional pressure filtration. In the buckypaper, polyaniline nanofibers (PANI nf ) were in situ growth on carbon nanotubes (CNTs), and the CNTs-PANI nf was inserted between the MXene nanosheets that were ultrasonically separated. Some MXene nanosheets were cut into fragments by ultrasonic waves and self-assembled into nanoflowers on the CNTs-PANI nf . The CP nf M electrode had an excellent capacitance of 479 F g −1 at 1 A g −1 . The superflexible solid-state supercapacitors (FSSCs) assembled with the electrode had a capacitance of 110 F g −1 at 1 A g −1 , a high energy density of 15.3 Wh Kg −1 at a power density of 0.5 kW Kg −1 . The capacitance of the FSSC did not decrease but increased during the charge–discharge cycle, with a capacitance retention of 104% after 5000 cycles. Its capacitance retention was 90% after folding 200 times in half along the sharp crease. One-dimensional CNTs and two-dimensional MXene nanosheets collaboratively constructed the superflexible porous skeleton, alleviating the stress damage caused by volume changes of the PANI nf in the cycles. MXene nanosheets trapped the shed PANI nanoparticles. This work provides a way for potential application of high-performance energy storage devices in wearable electronics.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jingyu Song,Wentao Xu,Jinlin Li,Yongqian Shen,Yingying Shen,Rong Wang,Xueyan Du
A significant challenge metal nanoparticles (NPs) used for electromagnetic wave (EMW) is the precise regulation of the interplay between dielectric and magnetic losses through multi-scale interface engineering, as well as achieving a wide broadband for absorbing materials. In this study, Ti 3 C 2 T x MXene/Ni composites were successfully synthesized in situ via a simple and mild solvothermal method. The influence of the size of Ni NPs on the EMW absorption performance was investigated. The results demonstrate that the size of Ni NPs could be regulated by varying the Ti 3 C 2 T x MXene content, resulting in a synergistic balance between dielectric and magnetic losses, significantly improving wideband impedance matching (3.00–12.80 GHz). The Ti 3 C 2 T x MXene/Ni composites achieved a minimum reflection loss (RL m ᵢ n ) of −50.70 dB at 3.76 GHz, with an effective absorption bandwidth (EAB) of 3.20 GHz. Characterization results reveal that size-dependent permeability dispersion and dielectric relaxation behavior synergistically optimize both impedance matching and loss mechanisms. This study provides a novel design strategy for enhancing the electromagnetic attenuation performance of MXene-based composites.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yuhan Cui,Jing Sun,Yining Wang,Lijie Zhao,Jiawei Wang,Yue Song,Ruixiang Xu,Zhongmin Su
Reasona ble structural frame modification and further optimization design of traditional substrates are favorable schemes to break through the current insufficient energy density of electrode materials for supercapacitors. Transition metal chalcogenides are being investigated as electrode materials for supercapacitors due to their exceptional energy storage capacity. However, single transition metal selenides, transition metal sulfides, or traditional transition metal selenides all have the problems of insufficient conductivity and structural collapse caused by charging and discharging, which limit their path to marketization. In this work, an isomorphic cobalt‑manganese‑selenium sulfide supported by MXene quantum dots (MQDs) based on ZIF was developed using a two-step hydrothermal method to address the energy storage disadvantages of chalcogenides. Thanks to the unique isomorphic skeleton design (enhancing the synergistic effect of selenium and sulfur) and the advantages of MQDs (short-range ion diffusion path) wrapped inside and outside selenium sulfide, MQDS@Mn 0.6 Co 0.4 Se/Mn 0.77 Co 0.23 S composite as supercapacitor electrode broke through the voltage window (0.5 V) of transition metals in alkaline environment, and its charge-discharge window was as high as 0.55 V when the specific capacitance was 1 A g −1 . The assembled asymmetric supercapacitor (ASC) can operate within a large voltage window of 1.6 V. When the power density reaches 817.52 W kg −1 , the energy density is as high as 83.91 Wh kg −1 . At 1.6 V (0.1 V above traditional), capacitance retention drops by only 13.09 % over 10,000 cycles. This study proposes a novel approach to the rational design of transition metal chalcogenides and the transformation of MXene substrates, resulting in electrode materials with prolonged charge-discharge times and a wide voltage window. This discovery provides a new avenue for developing advanced supercapacitor electrodes.
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Yuan Xiang,Jie Li,Jianhua Liu,Junwen Zhou,Shenghui Guo,Jiabin Zeng
NiCoMn-LDH/polyaniline (PANI)/MXene composite materials are prepared via a hydrothermal method. PANI is loaded onto MXene, and NiCoMn-LDH is grown in situ on PANI/MXene. The inherent positive charge in NiCoMn LDH effectively counteracts the self-aggregation tendency of MXene nanosheets and promotes the uniform in-situ growth of NiCoMn lactate dehydrogenase on the surface of PANI loaded MXene. Thus, the composite of NiCoMn-LDH/PANI/MXene boasts exceptional interfacial compatibility and an extensive contact area, facilitating seamless electron and ion transport across redox active centers. The NiCoMn-LDH/MXene/PANI electrode demonstrates remarkable performance, achieving the highest specific capacitance of 416.3 F g −1 at 0.2 A g −1 . Furthermore, it exhibits unparalleled cycling stability, maintaining its capacitance without any decay even after 10,000 cycles at 6 A g −1 . In addition, the assembled CNMP-MX-2//AC boasts a substantial specific capacity of 553.1 F g −1 at 0.2 A g −1 , accompanied by power density of 145.1 Wh·kg −1 and an energy density of 161.5 W kg −1 , showcasing its exceptional performance capabilities. The capacitance does not decay after 10000 cycles. The excellent electrochemical performance indicates that the NiCoMn LDH/MXene/PANI composites used directly as an electrode serves as an effective strategy for enhancing energy storage.
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CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Haofei Sima,Bo Liu,Xiaolin Shi,Chunling Zhang
The rapid development of communication technologies and flexible human–computer interfaces, necessitates the fabrication of a strain sensor with high sensitivity and electromagnetic interference (EMI) shielding performance. The purpose is to monitor human movement and protection from electromagnetic damage. Herein, we prepared tough, conductive, and self-healing carbon nanotube@cellulose/MXene (CCM) acrylamide-based hydrogels to achieve the dual-functional applications of strain sensors and EMI shielding. The carbon nanotubes and cellulose self-assembled into conductive fibers. Then, the two-dimensional MXene nanosheets were interconnected through the conductive fibers while being cross-linked into a complete conductive network through the metal–ligand bonding of Zn 2+ . Owing to the excellent conductivity (9.64 S/m) of the CCM hydrogel and the non-covalent reversible interactions among the components, the composite hydrogel exhibited excellent tensile strain (~424 %), efficient self-healing ability (87.2 %), frost and water retention ( T c < −60 °C), and efficient shielding effectiveness (51.8 dB). Meanwhile, as a strain sensor, it also possessed excellent sensing performance such as high sensitivity (GF = 20.17), wide detection range (0 %–400 %), fast response time (~135 ms), and high stability (~500 cycles). These features provide an idea for the subsequent design of flexible sensing electronics with EMI shielding performance.
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高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Jingxin Zhao,Hongyu Lu,Xijun Wei,Yuanyuan Gao,Yingze Song,Bingang Xu
Constructing a Zinc ion hybrid supercapacitor (ZHMSC) configuration with excellent electrochemical performance for progressive energy storage is worldwide attractive but yet still a considerable challenge. In this study, a universal and effective strategy has been proposed and developed for 3D-writing additive-free V 2 CT x MXene architected ZHMSC to realize the excellent electrochemical performance. With proper designs of printable electrochemical materials and direct ink writing architectures, 3D printed ZHMSC devices with high areal capacitance and excellent areal energy density have been achieved in a limited footprint area. Benefitting from the excellent ion diffusion and highly conductive networks, the 3D printed ZHMSCs device achieves the ultrahigh specific capacitance of 3.82 F cm −2 , large energy density of 1.36 mW h cm −2 and remarkable cyclic performance with the capacitance retention of 97.8 % after 12,000 cycles at 20 mA cm −2 . This work not only provides new insights on direct ink writing for high-performance Zn-Ion hybrid capacitor, but also offers a facile and efficient method to construct large-scale energy storage devices with high electrochemical performance for future energy storage.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Xinyi Zhang,Haiting Shi,Liangsen Liu,Chunying Min,Shuaitong Liang,Zhiwei Xu,Yanling Xue,Chunxia Hong,Zhijiang Cai
Molybdenum disulfide (MoS 2 ) has possession of a layered structure and high theoretical capacity, which is a candidate anode material for sodium ion batteries . However, unmodified MoS 2 are inflicted with a poor cycling stability and an inferior rate capability upon charge/discharge processes. Considering that the shape and size of anode materials play a key role in the performance of anode materials, this paper proposes a multi-level composite structure formed by the micro-nano materials based on self-assembled molybdenum disulfide (MoS 2 ) nanoflowers , Mxene and hollow carbonized kapok fiber (CKF). The micro-nano materials can be connected to form heterojunction and agglomeration can be avoided. The load bearing of heterostructure and stress release of CKF are coordinated to form a double protection mechanism, which improves the conductivity and structural stability of hybrid materials . Based on the above advantages, it has higher specific capacity than pure MoS 2 , and has better rate performance (639.3, 409.5, 386.2, 372, 338, 422.8 and 434.7 mAh g −1 at the current density of 0.05, 0.1, 0.2, 0.5, 1 ,0.1 and 0.05 A·g −1 , respectively). The stress-modulated strategies can provide new insights for the design and construction of transition metal sulfides heterostructures to achieve high performance sodium ion batteries .
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Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 38
·21766-21773
·
IF 10.733
Shixue Zhang,Huan Liu,Bin Cao,Qizhen Zhu,Peng Zhang,Xin Zhang,Renjie Chen,Feng Wu,Bin Xu
Two-dimensional transition metal carbides (MXenes) have a unique structure, excellent electronic conductivity and a low Li+ diffusion barrier, and show potential for application in energy storage. Especially, MXenes can act as a conductive matrix to achieve excellent lithium storage performance. Herein, a Ti3C2Tx MXene/carbon nanotubes@red phosphorus (Ti3C2Tx/CNTs@P) nanohybrid with stable Ti–O–P bonds is fabricated. The CNTs are introduced into Ti3C2Tx to construct a conductive network, and then the Ti3C2Tx/CNTs are combined with P by a ball-milling method. In this process, the surface oxygen-containing functional groups of Ti3C2Tx interact with P, forming Ti–O–P bonds. Owing to the large capacity contribution of P, the conductive network and buffering role of Ti3C2Tx/CNTs, and the effect of the Ti–O–P bond, the Ti3C2Tx/CNTs@P nanohybrid exhibits a superior reversible capacity of 2598 mA h g−1 at 0.05C (1C = 2600 mA g−1, based on the active material P), excellent cycling stability (2078 mA h g−1 after 500 cycles) and superior rate capability (454 mA h g−1 at 30C). These results demonstrate that the Ti3C2Tx/CNTs@P nanohybrid offers fascinating potential for high-performance lithium-ion batteries.
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Materials
·
2022
·Vol. 15
·期 19
·6770
·
IF 3.748
Zhaoyang Sun,Huamin Chen,Mingqiang Wu,Wei Yang,Jiang Zhao,Zefeng Wang,Shujun Guo,Huining Wang,Weiguo Wang,Jun Wang
The flexible self-powered display system integrating a flexible triboelectric nanogenerator (TENG) and flexible alternating current electroluminescence (ACEL) has attracted increasing attention for its promising potential in human–machine interaction applications. In this work, a performance-enhanced MXene/cellulose nanofibril (CNF)/MXene-based TENG (MCM-TENG) is reported for powering a flexible patterned ACEL device in order to realize self-powered display. The MCM multilayer composite film was self-assembled through the layer-by-layer method. The MCM film concurrently acted as a triboelectric layer and electrode layer due to its high conductivity and strength. Moreover, the effect of CNF concentration and number of layers on the output performance of TENG was investigated. It was found that the MCM-TENG realized the optimum output performance. Finally, a flexible self-powered display device was realized by integrating the flexible TENG and ACEL. The MCM-TENG with an output voltage of ≈90 V at a frequency of 2 Hz was found to be efficient enough to power the ACEL device. Therefore, the as-fabricated flexible TENG demonstrates a promising potential in terms of self-powered displays and human–machine interaction.
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ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Hailong Xu,Xiaowei Yin,Xinliang Li,Minghang Li,Shuang Liang,Litong Zhang,Laifei Cheng
Lightweight absorption-dominated electromagnetic interference (EMI) shielding materials are more attractive than conventional reflection-dominated counterparts because they minimize the twice pollution of the reflected electromagnetic (EM) wave. Here, porous Ti2CTx MXene/poly(vinyl alcohol) composite foams constructed by few-layered Ti2CTx (f-Ti2CTx) MXene and poly(vinyl alcohol) (PVA) are fabricated via a facile freeze-drying method. As superior EMI shielding materials, their calculated specific shielding effectiveness reaches up to 5136 dB cm2 g–1 with an ultralow filler content of only 0.15 vol % and reflection effectiveness (SER) of less than 2 dB, representing the excellent absorption-dominated shielding performance. Contrast experiment reveals that the good impedance matching derived from the multiple porous structures, internal reflection, and polarization effect (dipole and interfacial polarization) plays a synergistic role in the improved absorption efficiency and superior EMI shielding performance. Consequently, this work provides a promising MXene-based EMI shielding candidate with lightweight and high strength features.
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ACS Applied Polymer Materials
·
2025
·
IF 4.7
Jingjing Gao,Yadong Wang,Jiaoyang Huang,Zongmin Zhu
In this work, an innovative MXene-based nanohybrid, denoted as MXene-PDS, is fabricated through the integration of MXene with P/N/S-functionalized organic oligomer via hydrogen bonding. The incorporation of low loadings of MXene-PDS imparts effective flame retardancy to polylactic acid (PLA) while maintaining its processing and mechanical properties. Under a loading of 3% MXene-PDS, PLA/3MXene-PDS attains the UL-94 V-0 rating and exhibits a limiting oxygen index (LOI) of 22.8%. The peak heat release rate (PHRR) is reduced by 12.5%. Additionally, mechanical properties present good enhancement, with a notable 36% improvement in impact performance. The significant reduction in viscosity of PLA/3MXene-PDS greatly improves the processing performance. This study proposes a method for preparing MXene-based nanomaterial with high flame retardancy, which can endow polymers with multiple performance characteristics by adding a single functional additive.
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Biomaterials Advances
·
2025
·
IF 6
Junling Wang,Jingjing Zhu,Yanfang Lu,Aihong Lou,Zhe Cui,Yong Wang,Xianling Wang,Jianglei Qin
Natural polymer-based biodegradable hydrogels can be used to promote the wound healing due to their excellent biocompatibility, tissue adhesion and wound adaptability. In this research, a sprayable hydrogel with good antioxidant, skin adhesion and self-healing property was designed from hydrazide and dopamine functionalized carboxymethyl cellulose (CMC-HD) with oxidized pectin (OPec) cross-linking. The dopamine moiety enhanced antioxidant property of the hydrogel and the MXene nanosheets were composited to take the advantage of the photothermal stimulated antibacterial activit y . The coagulation drug Tranexamic acid (TXA) was loaded and enhance the hemostatic performance of the hydrogel in tail amputation and liver hemorrhage models. In vivo wound repairing experiment in full-thickness skin wound model proved the MXene@TXA/Gel promoted the wound repairing rate under NIR stimulus and this composite hydrogel shows great potential as wound dressing.
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