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Continuous production of Cl-terminated MXenes by bubbling chemical vapor growth in molten salt

materials Today 2025年 86卷 1-9页

作者： Zhang, Jikai Tao, Yi Ye, Yuxuan Wang, Haiyang Wu, Xinping Luo, Zicheng Shi, Yu Zhao, Qi Cheng, Zongju Guo, Yu Li, Bin Mai, Bo An, Qinyou Zhang, Xiansheng Du, Zhiguo Yang, Shubin School of Materials Science and Engineering Beihang University Beijing100191 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China College of Textiles and Clothing Qingdao University Qingdao266071 China

Although 2D transition-metal carbides (MXenes) are usually synthesized by selective etching and chemical vapor deposition approaches, they are limited by the slow reaction kinetics, resulting in their continuous production challenging. Here, we demonstrate a bubbling chemical vapor growth (BCVG) method to continuously produce Cl-terminated MXenes by the reaction of CH4 and TiCl4 chemical bubbles with titanium powder in a molten salt. In the molten reaction system, titanium powder would effectively react with TiCl4 to form highly active [TiCl6]y– with low Ti[sbnd]Cl bond dissociation energies. The multivalent [TiCl6]y– could efficiently incorporate the carbon species from CH4 to form [Ti6CCl18] clusters on the surface of bubbles in a low energy barrier, efficiently promoting the reaction kinetics. Subsequently, Cl-terminated MXenes were produced based on the following condensation reaction of [Ti6CCl18] clusters. The resultant MXene (Ti2CClx) exhibits an expanded structure with strong interfacial polarization between its basal planes and the polymer matrix, delivering a good electromagnetic wave absorption performance with a minimum reflection loss (RLmin) value of –52.2 dB at a thin thickness of 2.84 mm. © 2025 Elsevier Ltd

关键词： Condensation reactions

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A machine learning method approach for designing novel high strength and plasticity metastable β titanium alloys

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Progress in Natural Science:materials International 2025年第1期35卷 156-165页

作者： Zhiduo Liu Haoyu Zhang Shuai Zhang Jun Cheng Yixuan He Ge Zhou Jiawei Liu Suping Song Lijia Chen School of Materials Science and Engineering Shenyang University of Technology Shenyang Key Laboratory of Advanced Structural Materials and Applications Shenyang University of Technology Northwest Institute for Nonferrous Metal Research Shaanxi Key Laboratory of Biomedical Metal Materials State Key Laboratory of Solidification Processing Northwestern Polytechnical University Ansteel Group Automation Co. Ltd

In order to improve efficiency and reduce costs, four machine learning models were established for the design of metastable β titanium alloys, including the Adaboost model, the LightGBM model, the Voting model, and the Stacking model. The accuracy of these models was evaluated, and all models exhibited excellent accuracy for tensile strength, yield strength, and elongation. The values of R-squared coefficients（R2） all greater than *** them, the LightGBM model showed the highest accuracy, with relatively smallest values of mean absolute error（MAE） and root mean square error（RMSE） and relatively largest value of R2. To further verify the accuracy of the model, a metastable β titanium alloy Ti-5.5Cr-5Al-4Mo-3Nb-2Zr was designed by the LightGBM model. The predicted values of the alloy's tensile strength, yield strength, and elongation under three heat treatment processes were in high agreement with the experimental values. The alloy exhibited optimal strength-plasticity matching after undergoing a solution treatment at 850°C for 0.5 h, followed by aging at 650°C for 8 h, with a tensile strength of 1317 MPa, an elongation of 11.17 %, and a strength-plasticity product of 14.711 GPa·%.

关键词： Machine learning Metastable β titanium alloy Microstructure Plasticity Strength

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Synergistic Coupling of Sulfide Electrolyte and Integrated 3D FeS_(2)Electrode Toward Long-Cycling All-Solid-state Lithium Batteries

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Energy & Environmental materials 2024年第5期7卷 68-76页

作者： Wenyi Liu Yongzhi Zhao Chengjun Yi Weifei Hu Jiale Xia Yuanyuan Li Jinping Liu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China School of Integrated Circuits Huazhong University of Science and TechnologyWuhan 430074China

FeS_(2)cathode is promising for all-solid-state lithium batteries due to its ultra-high capacity,low cost,and environmental ***,the poor performances,induced by limited electrode-electrolyte interface,severe volume expansion,and polysulfide shuttle,hinder the application of FeS_(2)in all-solid-state lithium ***,an integrated 3D FeS_(2)electrode with full infiltration of Li6PS5Cl sulfide electrolytes is designed to address these *** a 3D integrated design not only achieves intimate and maximized interfacial contact between electrode and sulfide electrolytes,but also effectively buffers the inner volume change of FeS_(2)and completely eliminates the polysulfide shuttle through direct solid-solid conversion of Li2S/***,the vertical 3D arrays guarantee direct electron transport channels and horizontally shortened ion diffusion paths,endowing the integrated electrode with a remarkably reduced interfacial impedance and enhanced reaction *** from these synergies,the integrated all-solid-state lithium battery exhibits the largest reversible capacity(667 mAh g^(-1)),best rate performance,and highest capacity retention of 82%over 500 cycles at 0.1 C compared to both a liquid battery and non-integrated all-solid-state lithium *** cycling performance is among the best reported for FeS_(2)-based all-solid-state lithium *** work presents an innovative synergistic strategy for designing long-cycling high-energy all-solid-state lithium batteries,which can be readily applied to other battery systems,such as lithium-sulfur batteries.

关键词： 3D electrolyte infiltration all-solid-state batteries FeS_(2)nanosheets arrays integrated 3D electrodes sulfide electrolytes

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Recent advances in protective technologies against copper corrosion

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Journal of materials Science & technology 2024年第34期201卷 75-94页

作者： Xiaomeng She Jian Peng Yujie Qiang Yue Zhou Song Zhang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology122 Luoshi RoadWuhan 430070China National Center for Materials Service Safety University of Science and Technology BeijingBeijing 100083China School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China

Copper,one of the most frequently utilized non-ferrous metals,finds extensive applications in the elec-trical industry,mechanical engineering,construction industry,and arm ***-term exposure to corrosive environments including moisture,sulfur,chlorine,and microbes induces corrosion,a signifi-cant factor contributing to material ***,numerous scientific endeavors have been directed towards the prevention of copper ***,coating copper with innovative materials like graphene,boron nitride,and various conductive polymers has proven effective in thwarting ***,the introduction of new organic compounds,including azole derivatives,amino acids,and N-heterocyclic carbenes,has bolstered the eco-friendliness and efficiency of corrosion inhibitors and molecular passivation ***,these approaches have been extensively investigated for their efficacy in antioxidation of copper *** study provides a comprehensive review of the latest advancements in protective technologies,such as anti-corrosion coatings,corrosion inhibitors,and molecular passivation layers,aimed at countering copper corrosion under aggressive conditions.

关键词： Copper corrosion Coating Corrosion inhibitor Molecular passivation

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Accelerated reconstruction of ZIF-67 with significantly enhanced glucose detection sensitivity

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Nano Research 2024年第6期17卷 4737-4743页

作者： Huihui Jin Weihao Zeng Wei Qian Lun Li Pengxia Ji Zhengying Li Daping He School of Information Engineering Wuhan University of TechnologyWuhan 430070China Hubei Engineering Research Center of RF-Microwave Technology and Application Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Research on metal-organic framework(MOF)-based non-enzymatic glucose sensors usually ignores the impact of the surface reconstruction degree of MOF on the activity of catalyzing glucose *** this work,we choose zeolitic imidazolate framework-67(ZIF-67),which is commonly used in glucose sensing,as a representative to investigate the influence of reconstruction degree on its structure and glucose catalytic *** employing the electrochemical activation strategy,the activity of ZIF-67 in catalyzing glucose gradually increased with the prolongation of the activation time,reaching the optimum after 2 h *** detection sensitivity of the activated ZIF-67 was 19 times higher than that of the initial ZIF-67,and the limit of detection(LOD)was lowered from 7 to 0.4μ*** findings demonstrate that the oxidation degree of ZIF-67 deepened rapidly with continuously activation and was basically reconstructed to CoOOH after 2 h activation,accompanied by a morphological change from cuboctahedral to ***,theoretical investigation revealed that ZIF-67 is not suitable as a stable glucose sensor electrode since the adsorbed glucose molecules hasten the dissociation of ligands and the breaking of Co-N bond in ***,our work has important implications for the rational design of next-generation MOF-based glucose sensors.

关键词： zeolitic imidazolate framework-67(ZIF-67) glucose oxidation electrochemical activation reconstruction CoOOH

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Light-enhanced metal-support interaction for synergetic photo/thermal catalytic formaldehyde oxidation

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Journal of materials Science & technology 2023年第36期167卷 74-81页

作者： Jiawei Ye Linxi Wang Bicheng Zhu Bei Cheng Rongan He Laboratory of Solar Fuel Faculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430078China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hunan Key Laboratory of Applied Environmental Photocatalysis Changsha UniversityChangsha 410022China

The strong metal-support interaction(SMSI)plays a pivotal role in regulating electronic properties and activating surface oxygen *** this work,we report light-irradiation-modulated SMSI for enhanced formaldehyde(HCHO)***,the SMSI between Pt nanoparticles(NPs)and Bi_(2)MoO_(6)cre-ated surface-active oxygen at Pt-Bi_(2)MoO_(6)interfaces to activate HCHO to dioxymethylene(DOM).Notably,light irradiation boosted the SMSI and catalytic ***,photogenerated holes in Bi_(2)MoO 6 im-proved HCHO adsorption and activation,while photogenerated electrons migrated from Bi_(2)MoO_(6)to Pt NPs to promote O_(2)adsorption and activation,accelerating the oxidation of DOM to CO_(2)and H_(2)*** light-modulated SMSI and the synergy between photocatalysis and thermocatalysis lead to enhanced cat-alytic oxidation activity,providing a practical strategy for indoor volatile organic compound(VOC)de-composition under ambient conditions.

关键词： Formaldehyde oxidation Strong metal-support interaction Photocatalysis Photo-thermal synergy Electron transfer

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Structural and Luminescent Properties of Mg_(0.25-x)Al_(2.57)O_(3.79)N_(0.21):xMn^(2+)Green-Emitting Transparent Ceramic Phosphor

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Journal of Wuhan University of technology(materials Science) 2024年第3期39卷 533-540页

作者：郝留成 MIAO Xiaojun LI Kai ZHONG Jianying 涂兵田 YANG Zhangfu 王皓 Pinggao Group Co. LtdPingdingshan 467001China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Longzhong Laboratory Xiangyang 430070China School of Materials Science and Engineering Anhui University of Science and TechnologyHuainan 232001China

A series of spinel-type Mg_(0.25-x)Al_(2.57)O_(3.79)N_(0.21):xMn^(2+)(MgAlON:xMn^(2+))phosphors were synthesized by the solid-state reaction *** transparent ceramic phosphors were fabricated by pressureless sintering followed by hot-isostatic pressing(HIP).The crystal structure,luminescence and mechanical properties of the samples were systematically *** transparent ceramic phosphors with tetrahedrally coordinated Mn^(2+)show strong green emission centered around 515 nm under blue light *** the Mn^(2+)concentration increases,the crystal lattice expands slightly,resulting in a variation of crystal field and a slight red-shift of green emission *** weak absorption peaks in the transmittance spectra originate from the spin-forbidden ^(4)T_(1)(^(4)G)→^(6)A_(1) transition of Mn^(2+).The decay time was found to decrease from 5.66 to 5.16 ms with the Mn^(2+)*** present study contributes to the systematic understanding of crystal structure and properties of MgAlON:xMn^(2+)green-emitting transparent ceramic phosphor which has a potential application in high-power light-emitting diodes.

关键词： transparent ceramic phosphor green emission MgAlON photoluminescence

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Thermal Stability and Electrochemical Properties of Separators for Lithium-ion Batteries

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Journal of Wuhan University of technology(materials Science) 2023年第6期38卷 1231-1241页

作者： YI Guangyuan XU Caiyun LIU Wan QU Deyu WANG Hongbing TANG Haolin State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Chemistry Wuhan University of TechnologyWuhan 430070China Wuhan Huiqiang New Energy Materials Technology Co. LtdWuhan 430070China

The mechanical properties,contact angle,thermomechanical and electrochemical properties of PE,PVDF,and ceramic separators were *** experimental results show that the PE separator has the largest porosity,the PVDF separator has the best mechanical properties,wettability,and heat *** kinds of separators were assembled into lithium-ion batteries for electrochemical *** them,the PE separator has the best rate performance,and the ceramic separator has poor performance in charge-discharge *** the same time,the PE and ceramic separators were tested with different amounts of electrolytes at room temperature and a high temperature,and it is found that the capacity of the PE separator is higher at room temperature,while the performance of the ceramic separator is better at a high *** amount of electrolyte also has a certain influence on its electrochemical performance.

关键词： lithium-ion battery separator tensile strength electrochemical performance

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Efficient flexible perovskite solar cells and modules using a stable SnO_(2)-nanocrystal isopropanol dispersion

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Nano Research 2024年第4期17卷 2704-2711页

作者： Zhiwei Su Jing Li Ruixuan Jiang Shujie Zhang Chengkai Jin Feng Ye Bingcan Ke Mengjun Zhou Jinhui Tong Hyesung Park Fuzhi Huang Yi-Bing Cheng Tongle Bu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Material Science and Engineering Wuhan University of TechnologyWuhan 430070China Department of Materials Science and Engineering Graduate School of Semiconductor Materials and Devices EngineeringGraduate School of Carbon NeutralityLow Dimensional Carbon Materials CenterUlsan National Institute of Science and TechnologyUlsan 44919Republic of Korea Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528200China

The outstanding advantages of lightweight and flexibility enable flexible perovskite solar cells(PSCs)to have great application potential in mobile energy *** to the low cost,low-temperature processibility,and high electron mobility,SnO_(2) nanocrystals have been widely employed as the electron transport layer in flexible *** prepare high-quality SnO_(2) layers,a monodispersed nanocrystal solution is normally ***,the SnO_(2) nanocrystals can easily aggregate,especially after long periods of ***,we develop a green and cost-effective strategy for the synthesis of high-quality SnO_(2) nanocrystals at low temperatures by introducing small molecules of glycerol,obtaining a stable and well-dispersed SnO_(2)-nanocrystal isopropanol dispersion *** to the enhanced dispersity and super wettability of this alcohol-based SnO_(2)-nanocrystal solution,large-area smooth and dense SnO_(2) films are easily deposited on the plastic conductive ***,this contributes to effective charge transfer and suppressed non-radiative recombination at the interface between the SnO_(2) and perovskite *** a result,a greatly enhanced power conversion efficiency(PCE)of 21.8%from 19.2%is achieved for small-area flexible PSCs.A large-area 5 cm×5 cm flexible perovskite solar mini-module with a champion PCE of 16.5%and good stability is also demonstrated via this glycerol-modified SnO_(2)-nanocrystal isopropanol dispersion approach.

关键词： tin oxide isopropanol dispersion colloid stability flexible perovskite solar cells

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Improving discharge voltage and ion storage dynamic in polyaniline via modulation of carrier charge density for magnesiummetal batteries

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Nano Research 2024年第7期17卷 6168-6175页

作者： Ping Luo Feiyang Chao Chunli Zuo Wenwei Zhang Fangyu Xiong Zhen Huang Dongyao Zhu Gongtao Yu Wenhui Zhong Xingbao Chen Han Tang Xiujuan Wei Qinyou An Hubei Provincial Key Laboratory of Green Materials for Light Industry School of Materials and Chemical EngineeringHubei University of TechnologyWuhan 430068China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China Institute for Sustainable Transformation School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 510006China

Rechargeable magnesium-metal batteries(RMBs)have gained much attention due to their abundant resources as well as high ***,the high charge density of Mg^(2+)is one of the main reasons for the slow kinetics performance of RMBs,and modulation of the charge density is an important strategy to improve the kinetics and electrochemical performance of ***,we report on the conductive polymer polyaniline(PANI)for RMBs,which is found to have excellent kinetics and high discharge voltage when storing MgCl^(+).In the storage of MgCl^(+),PANI exhibits a high average discharge voltage platform is 2.3 V ***^(2+)/Mg,which is higher than that in storage of Mg^(2+).We demonstrated the reversible intercalation/de-intercalation of MgCl^(+)in PANI accompanying with the reversible transformation between the quinone ring(C–C,–N=)and the benzene ring(C=C,–NH–)during charging and *** functional theory calculation reveals that PANI exhibit higher voltages(2.25 V vs.1.82 V)along with lower diffusion energy barriers(1.27 eV vs.1.55 eV)for MgCl^(+)storage compared to Mg^(2+)*** work refines the storage mechanism of PANI in RMBs and provides new guidelines for the application of PANI in RMBs.

关键词： rechargeable magnesium-metal batteries cathode materials polyaniline MgCl+storage

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