IONICS
·
2023
·Vol. 30
·期 3
·1457-1467
·
IF 2.8
Xu Wengang,Zhang Xiaonan,Li Junhao,Chen Xiaobo,Lan Lin,Zhang Jun,Ling Francis Chi-Chung,Ru Qiang
The scaffolded hierarchical CeVO 4 /V 2 CT x -MXene composite is harvested to boost the performance of vanadium oxides in aqueous zinc-ion batteries. Benefiting from the high electronic-ion conductivity of V 2 CT x -MXene and the multilayered structure of the composite, CeVO 4 /V 2 CT x -Mxene cathode depicts the advantages of the acceptable zinc storage and ionic reaction kinetics. Compared with pure CeVO 4 , CeVO 4 /V 2 CT x -MXene cathode shows a reversible discharge capacity of 295.0 mAh g −1 at 1 A g −1 , capacity retention of 81.6% over 3000 cycles at 5 A g −1 , and good high-rate performance of 233.5 mAh g −1 at 8 A g −1 . The quasi-solid-state batteries of CeVO 4 /V 2 CT x -MXene demonstrate well mechanical deformability and good cycling performance. This work provides a reference for solving the problem of vanadium-based materials for aqueous zinc-ion batteries.
研究领域:
材料科学
·
能量存储
·
电化学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Shiquan Li,Jianhua Zhu,Wei Lu,Zhaoxi Liu,Zhuosen Wang,Liu Wang,Yapeng Tian,Xinwei Cui
Sodium-selenium (Na-Se) batteries have gained attention due to their high energy density and power density, resulting from the liquid–liquid reaction at the interface in the dimethoxyethane electrolyte. Nevertheless, the pronounced shuttle effect of polyselenides causes low coulomb efficiency and inadequate cycling stability for Na-Se batteries. Herein, the iron nanoparticles surface modified accordion-like Ti 3 C 2 T x MXene (MXene/Fe) synthesized via the molten salt etching is utilized as the host of Se species for high-performance Na-Se battery cathode. Benefiting from the layered structure and chemical adsorption of accordion-like MXene, the shuttle effect of the cathode is effectively inhibited. Simultaneously, electrochemical kinetics is boosted due to the catalytic effect of Fe nanoparticles, which facilitate the transformation of polyselenide from long-chain to short-chain, contributing to pseudocapacitive capacity. Consequently, the Se-based cathode delivers a steady capacity of 575.0 mA h g −1 at 0.2 A/g, and even a high capacity of 500 mAh/g at 50 A/g based on the mass of Se@MXene/Fe electrode, indicating the ultrafast Na + ion storage. Most notably, this structure demonstrated remarkable long-term cycling stability for 5000 cycles with a high capacity retention of 97.4 %. The electrochemical energy storage mechanism is further revealed by in situ Raman. Herein, the confinement-catalysis structure shines light on inhibiting shuttling and facilitating ultrafast ion storage.
研究领域:
材料科学
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电化学
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能源存储
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DOI
高影响因子
Journal of Materiomics
·
2021
·
IF 6.425
Xiaobin Liu,Fanfan Liu,Xudong Zhao,Li-Zhen Fan
The development of dual-function anode materials for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) is exceedingly essential. Herein, with rationally designed hierarchical metal-organic framework (MOF)@MXene as a precursor, a novel sandwich-like CoP-NC@Ti 3 C 2 T x composite has been successfully fabricated by the following phosphorization reaction. As anode material for LIBs, the CoP-NC@Ti 3 C 2 T x composite exhibits remarkable electrochemical performance with high-rate capability (147.8 mAh g −1 at 2000 mA g −1 ; 245.6 mAh g −1 at 100 mA g −1 ) and ultralong cycling life (2000 cycles with a capacity retention over 100%). For SIBs, it delivers a discharge capacity of 101.6 mAh g −1 at a current density of 500 mA g −1 after 500 cycles. The well-designed sandwich-like composite effectively supports the easy access to electrolyte, facilitate the Li/Na ion transportation, and protect the active material from pulverization upon long cycling. In addition, the electrochemical reaction kinetics and Li-migration kinetics of the CoP-NC@Ti 3 C 2 T x composite have been pioneeringly illuminated by pseudocapacitive behavior calculation and density functional theory (DFT) computations, respectively. This work sheds light on the rational design and development of MOF/MXene-derived dual-function anode materials for Li/Na-storage.
研究领域:
材料科学
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电化学
·
能源存储
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2020
·
IF 7.1
Guanghui Yang,Jinlai Zhao,Shaozhen Yi,Xuejuan Wan,Jiaoning Tang
Conventional fluorescent probes are either easily photobleached or non-biodegradable, which often leads to the unstable fluorescence signal output and long-term biological toxicity. Therefore, the development of novel fluorescent materials with both excellent photostability and biodegradability is of great significance for further broadening their application in numerous research fields. In this work, Nb 2 C quantum dots (Nb 2 C QDs) with pristine crystallographic structures of Nb 2 C MXene phases and surface oxygen-containing species are synthesized by an ultrasound assisted physicochemical exfoliation in tetrapropylammonium hydroxide. Detailed analyses indicate that the Nb 2 C QDs not only possess excellent chemical- and photo-stable fluorescence emission but also achieve successful application in fluorescence sensing of heavy metal ions and fluorescence imaging. More importantly, it is confirmed that the Nb 2 C QDs present high biocompatibility and unique biodegradation property responsive to human myeloperoxidase, implying the application safety of Nb 2 C QDs in vivo . Under the background of ever-growing and stringent requirements for biosafety and technical stability, the chemical- and photo-stability, biocompatibility, biodegradability, and most importantly the promising fluorescence sensing/imaging characteristic of the obtained Nb 2 C QDs may argue well for their future applications in environmental monitoring, biomedical diagnosis, visual display, and anti-counterfeiting.
研究领域:
材料科学
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纳米技术
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分析化学
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生物医学工程
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环境科学
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DOI
高影响因子
Frontiers of Physics
·
2023
·Vol. 18
·期 3
·1-12
·
IF 7.5
Liao Qiugang,Liu Hao,Chen Ziqiang,Zhang Yinggan,Xiong Rui,Cui Zhou,Wen Cuilian,Sa Baisheng
With the development of modern electronics, especially the next generation of wearable electromagnetic interference (EMI) shielding materials requires flexibility, ultrathin, lightweight and robustness to protect electronic devices from radiation pollution. In this work, the flexible and ultrathin dopamine modified MXene@cellulose nanofiber (DM@CNF) composite films with alternate multilayer structure have been developed by a facile vacuum filtration induced self-assembly approach. The multilayered DM@CNF composite films exhibit improved mechanical properties compared with the homogeneous DM/CNF film. By adjusting the layer number, the multilayered DM3@CNF2 composite film exhibits a tensile strength of 48.14 MPa and a toughness of 5.28 MJ·m − 3 with a thickness about 19 µm. Interestingly that, the DM@CNF film with annealing treatment achieves significant improvement in conductivity (up to 17264 S·m −1 ) and EMI properties ( SE of 41.90 dB and SSE/t of 10169 dB·cm 2 ·g − 1 ), which still maintains relatively high mechanical properties. It is highlighted that the ultrathin multilayered DM@CNF film exhibits superior EMI shielding performance compared with most of the metal-based, carbon-based and MXene-based shielding materials reported in the literature. These results will offer an appealing strategy to develop the ultrathin and flexible MXene-based materials with excellent EMI shielding performance for the next generation intelligent protection devices.
研究领域:
材料科学
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纳米技术
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电气工程
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复合材料
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DOI
高影响因子
Nano Research
·
2023
·Vol. 16
·期 7
·10164-10174
·
IF 9.9
Sang Min,Liu Shuai,Wu Jianpeng,Wang Xinyi,Zhang Junshuo,Xu Yunqi,Wang Yu,Li Jun,Li Ji,Xuan Shouhu,Gong Xinglong
As intelligent wearable devices, they will inevitably be subjected to various damages and disturbances from the external environment during daily use. Therefore, it is urgent to develop safeguarding materials with multiple protective properties. Herein, this work developed a flexible and breathable three-dimensional (3D) porous shear stiffening elastomer (SSE)/MXene (M-SSE) foam with impact/electromagnetic interference (EMI)/bacteria multiple protection performance for intelligent wearable devices. The continuous conductive MXene network in the 3D SSE porous structure made M-SSE foam exhibit excellent electromagnetic interference shielding property with a high shielding effectiveness of 34 dB. Attributed to the shear stiffening effect of porous SSE matrix, M-SSE foam possessed unique anti-impact and protection properties. The energy dissipation rate reached up to more than 85%, illustrating M-SSE foam could effectively attenuate the external impact force and absorb the impact energy. Inherited from the excellent photothermal performance of MXene, M-SSE foam achieved a considerable saturated temperature of 98 °C under 0.57 W/cm 2 laser power. Therefore, M-SSE foam showed extraordinary antimicrobial property for Staphylococcus aureus according to the principle of photothermal sterilization. Finally, for the development of intelligent wearable devices, conductive M-SSE foam could be used as an intelligent sensor to monitor various human movements owing to the highly sensitive property. This work greatly expanded the application prospect of multifunctional protective materials in various complex environments and promoted the development of multifunctional smart wearable devices in protection field.
研究领域:
材料科学
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纳米技术
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电磁屏蔽
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生物医学工程
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可穿戴电子设备
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机械工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Haizhen Liu,Chenglin Lu,Xinchun Wang,Li Xu,Xiantun Huang,Xinhua Wang,Hua Ning,Zhiqiang Lan,Jin Guo
Two-dimensional vanadium carbide (V2C) and titanium carbide (Ti3C2) MXenes were first synthesized by exfoliating V2AlC or Ti3AlC2 and then introduced jointly into magnesium hydride (MgH2) to tailor the hydrogen desorption/absorption performances of MgH2. The as-prepared MgH2–V2C–Ti3C2 composites show much better hydrogen storage performances than pure MgH2. MgH2 with addition of 10 wt % of 2V2C/Ti3C2 initiates hydrogen desorption at around 180 °C; 5.1 wt % of hydrogen was desorbed within 60 min at 225 °C, while 5.8 wt % was desorbed within 2 min at 300 °C. Under 6 MPa H2, the dehydrided MgH2–2V2C/Ti3C2 can start to recover hydrogen at room temperature, and 5.1 wt % of H2 is obtained within 20 s at a constant temperature of 40 °C. The reversible capacity (6.3 wt %) does not decline for up to 10 cycles, which shows excellent cycling stability. The addition of 2V2C/Ti3C2 can remarkably lower the activation energy for the hydrogen desorption reaction of MgH2 by 37% and slightly reduce the hydrogen desorption reaction enthalpy by 2 kJ mol–1 H2. It was demonstrated that the combination of V2C and Ti3C2 promotes the hydrogen-releasing process of MgH2 compared with addition of only V2C or Ti3C2, while Ti3C2 impacts MgH2 more significantly than V2C in the hydrogen absorption process of MgH2 at ambient temperatures. A possible mechanism in the hydrogen release and uptake of the MgH2–V2C–Ti3C2 system was proposed as follows: hydrogen atoms or molecules may preferentially transfer through the MgH2/V2C/Ti3C2 triple-grain boundaries during the desorption process and through the Mg/Ti3C2 interfaces during the absorption process. Microstructure studies indicated that V2C and Ti3C2 mainly act as efficient catalysts for MgH2. This work provides an insight into the hydrogen storage behaviors and mechanisms of MgH2 boosted by a combination of two MXenes.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
Sensors & Diagnostics
·
2023
·
IF 0
Jionghong Liang,Ke Ma,Wenshuo Gao,Yue Xin,Shousen Chen,Weicheng Qiu,Gengzhe Shen,Xin He
Traditional starch-based hydrogels often lack the mechanical robustness and electrical conductivity required for strain sensing applications. In this study, a conductive organohydrogel was developed by blending starch and MXene with polyacrylic acid (PAA). The resulting PAA/starch/MXene organohydrogel exhibits exceptional mechanical strength, high electrical conductivity, robust adhesion, and resilience to low temperatures. Strain sensors based on this innovative material demonstrate remarkable characteristics, including high sensitivity (maximum GF = 14.19), rapid response time (approximately 160 ms), a wide sensing range (exceeding 800%), and excellent cycling stability. Notably, these sensors remain efficient even at frigid temperatures as low as −30 °C. Furthermore, these sensors find practical application in sign language translation, achieving an impressive recognition rate of up to 100% for complex sentences. When integrated into a sensor array, they enable precise assessment of load magnitude and distribution. Consequently, this research introduces an innovative strategy for fabricating highly efficient conductive hydrogels, holding significant promise for diverse applications in the realm of flexible electronic devices, and promoting sustainable advancements in the field of wearable electronics.
研究领域:
材料科学
·
电子学
·
可穿戴技术
·
生物医学工程
✓ 已验证
DOI
ACS Omega
·
2026
·
IF 5.2
Jingjin Cai,Shenghuang Li,Saizi Song,Bingjie Ge,Shanglin Xiang,Dongyu Cai
The irreversible restacking of MXene nanosheets during thermal drying severely limits their practical applications. This study presents an edge-selective grafting strategy where poly(acrylic acid) is covalently anchored to MXene edges, creating effective nanospacers that inhibit face-to-face stacking. XRD confirms expanded interlayer spacing proportional to the grafting degree, while FTIR and XPS verify successful carboxyl group introduction. The modified MXene enables enhanced redispersion of thermally dried powders into a stable nanosheet dispersion in alkaline aqueous media, exhibiting excellent colloidal stability and preserved electrical conductivity. This work provides a scalable approach to produce redispersible, highly conductive MXene powders, overcoming a critical processing bottleneck.
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Tingjie Chen,Zhiyong Liu,Gang Zhao,Zipeng Qin,Peitao Zheng,John Tosin Aladejana,Zhendong Tang,Mingcen Weng,Xiangfang Peng,Jian Chang
Sustainable biomass materials are promising for low-cost wearable piezoresistive pressure sensors, but these devices are still produced with time-consuming manufacturing processes and normally display low sensitivity and poor mechanical stability at low-pressure regimes. Here, an aqueous MXene ink obtained by simply ball-milling is developed as a conductive modifier to fabricate the multiresponsive bidirectional bending actuator and compressible MXene-plant fiber sponge (MX-PFS) for durable and wearable pressure sensors. The MX-PFS is fabricated by physically foaming MXene ink and plant fibers. It possesses a lamellar porous structure composed of one-dimensional (1D) MXene-coated plant fibers and two-dimensional (2D) MXene nanosheets, which significantly improves the compression capacity and elasticity. Consequently, the encapsulated piezoresistive sensor (PRS) exhibits large compressible strain (60%), excellent mechanical durability (10 000 cycles), low detection limit (20 Pa), high sensitivity (435.06 kPa–1), and rapid response time (40 ms) for practical wearable applications.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2021
·Vol. 36
·期 24
·5002-5012
·
IF 3.089
Zhou Haijun,Jiresse Nguetsa Kuate Loic,Zhang Weirun,Chen Zhengyang,Zhang Yamei,Zhang Jiaoxia
The photodegradation technology can improve the status quo of environmental problems seriously which hindered the development and progress of human society. In this work, the two-dimensional transition metal carbide Ti 3 C 2 was prepared by HF etching of Ti 3 AlC 2 , and subsequently TiO 2 crystals were produced by hydrothermal method to prepare TiO 2 /Ti 3 C 2 composite. The Ag nanoparticles were then doped by photoreduction to form a ternary Ag/TiO 2 /Ti 3 C 2 composite. The effect of photocatalytic degradation of the methyl orange solution by Ag/TiO 2 /Ti 3 C 2 was investigated. The degradation only with Ag/TiO 2 /Ti 3 C 2 is worser than TiO 2 /Ti 3 C 2 , so H 2 O 2 was added to improve the catalytic ability and explore the photocatalytic mechanism. In 420 min, the degradation efficiency of methyl orange (MO) solution reached 71.09% due to the active-free radicals preventing the recombination of electron hole pairs to improve the catalytic performance of photocatalytic materials. Graphical abstract
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Jiana Hu,Caiyun Liang,Jiadong Li,Chuanwei Lin,Yongjiu Liang,Dewen Dong
2D transition metal carbide/nitride (MXene) nanomaterials have prospective applications in high-performance microwave absorption (MA). However, the excessively high permittivity, absence of magnetic loss, and susceptible oxidizability of MXene severely hinder the enhancement of its MA properties. Here, we used a facile organic solution–phase thermal decomposition method to prepare dielectric–magnetic MXene@CoNi nanocomposites with heterojunctions , which can effectively prevent the oxidation of MXene . Subsequently, the MXene@CoNi nanocomposites were integrated with magnetic CoNi alloys, MXene microspheres (MXene MPs), and a silicon rubber (SR) matrix to construct multilayered CoNi/MXene@CoNi/MXene MPs/SR composites by casting and curing. Benefiting from the multilayered structure and complementary effects of the dielectric and magnetic components, the multilayered CoNi/MXene@CoNi/MXene MPs/SR composites composed of matching, absorbing, and reflective layers showed a remarkable minimum reflection loss of −53.3 dB and an ultra-broad effective absorption bandwidth up to 11.12 GHz at a thickness of 2.96 mm. These results demonstrated the developed multilayered composites are promising candidates for high-performance MA. Our study provides new insights into the development of ultra-broadband MXene-based absorbent materials.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）