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Surface pseudocapacitance of mesoporous Mo_(3)N_(2) nanowire anode toward reversible high-rate sodium-ion storage

Journal of Energy Chemistry 2021年第4期30卷 295-303页

作者： Yalong Jiang Jun Dong Shuangshuang Tan Qiulong Wei Fangyu Xiong Wei Yang Yuanhao Shen Qingxun Zhang Zi'ang Liu Qinyou An Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina Department of Materials Science and Engineering Fujian Key Laboratory of Materials GenomeCollege of MaterialsXiamen UniversityXiamen 361005FujianChina Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200GuangdongChina

Sodium-ion storage devices are highly desirable for large-scale energy storage applications owing to the wide availability of sodium resources and low *** metal nitrides(TMNs)are promising anode materials for sodium-ion storage,while their detailed reaction mechanism remains ***,we synthesize the mesoporous Mo3N2 nanowires(Meso-Mo_(3)N_(2)-NWs).The sodium-ion storage mechanism of Mo3N2 is systematically investigated through in-situ XRD,ex-situ experimental characterizations and detailed kinetics ***,the Mo_(3)N_(2) undergoes a surface pseudocapacitive redox charge storage *** from the rapid surface redox reaction,the Meso-Mo_(3)N_(2)-NWs anode delivers high specific capacity(282 m Ah g^(-1) at 0.1 A g^(-1)),excellent rate capability(87 m Ah g^(-1) at 16 A g^(-1))and long cycling stability(a capacity retention of 78.6%after 800 cycles at 1 A g^(-1)).The present work highlights that the surface pseudocapacitive sodium-ion storage mechanism enables to overcome the sluggish sodium-ion diffusion process,which opens a new direction to design and synthesize high-rate sodiumion storage materials.

关键词： Surface pseudocapacitance Sodium-ion storage Nitrogen vacancy Molybdenum nitride High-rate

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Pancake-Like MOF Solid-state Electrolytes with Fast Ion Migration for High-Performance Sodium Battery

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Nano-Micro Letters 2021年第7期13卷 74-85页

作者： Gang Zhang Jun Shu Lin Xu Xinyin Cai Wenyuan Zou Lulu Du Song Hu Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070People’s Republic of China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200People’s Republic of China

Solid-state electrolyte(SSE)of the sodium-ion battery have attracted tremendous attention in the next generation energy storage materials on account of their wide electrochemical window and thermal ***,the high interfacial impedance,low ion transference number and complex preparation process restrict the application of ***,inspired by the excellent sieving function and high specific surface area of red blood cells,we obtained a solid-like electrolyte(SLE)based on the combination of the pancake-like metal-organic framework(MOF)with liquid electrolyte,possessing a high ionic conductivity of 6.60×10^(-4) S cm^(−1),and excellent sodium metal *** addition,we investigated the ion restriction effect of MOF’s apertures size and special functional groups,and the ion transference number increased from 0.16 to ***,the assembled Na_(0.44)MnO_(2)//SLE//Na full batteries showed no obvious capacity decrease after 160 *** material design of SLE in our work is an important key to obtain fast ion migration SLE for high-performance sodium-ion batteries.

关键词： Metal-organic Frameworks Sodium-ion Battery Solid-like Electrolyte Interface Contact

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Bioinspired cellulose-integrated MXene-based hydrogels for multifunctional sensing and electromagnetic interference shielding

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Interdisciplinary materials 2022年第4期1卷 495-506页

作者： Jingjiang Wei Chenglong Zhu Zhihui Zeng Fei Pan Fuqiang Wan Liwen Lei Gustav Nyström Zhengyi Fu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanHubeiPR China Laboratory for Cellulose and Wood Materials Swiss Federal Laboratories for Materials Science and Technology(Empa)DübendorfSwitzerland Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials School of Material Science and EngineeringShandong UniversityJinanShandongPR China Laboratory for Biointerfaces Swiss Federal Laboratories for Materials Science and Technology(Empa)St.GallenSwitzerland Department of Health Science and Technology ETH ZürichZürichSwitzerland

Bioinspired hydrogels are complex materials with distinctive properties comparable to biological *** exceptional sensitivity to various external stimuli leads to substantial application potential in wearable smart ***,these multifaceted hydrogels are often challenging to be combined with pattern customization,stimulus responsiveness,self-healing,and ***,inspired by mussel secretions,a printable,self-healing,and biocompatible MXene-based composite hydrogel was designed and prepared by incorporating Ti3C2Tx MXene nanosheets into the hydrogel framework through the chelation of calcium ions(Ca2+)with polyacrylic acid and cellulose nanofibers at alkaline *** biocompatible conductive hydrogel exhibited sensitivity(gauge factor of 2.16),self-healing(within 1 s),recognition,and adhesion,distinguishing it as an ideal candidate for wearable multifunctional sensors toward strain sensing,vocal sensing,signature detection,and Morse code ***,the multifunctional hydrogel manifested efficient electromagnetic interference shielding properties(reaching more than 30 dB at a thickness of 2.0 mm),protecting electronics and humans from electromagnetic radiation and ***,the presented work represents a versatile strategy for developing environmentally friendly conductive hydrogels,demonstrating the perspectives of intelligent hydrogels for multifunctional applications.

关键词： cellulose nanofiber electromagnetic interference shielding hydrogel MXene sensor

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Two-dimensional gersiloxenes with tunable band gap as new photocatalysts

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Rare Metals 2020年第6期39卷 610-612页

作者： Shao-Wen Cao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Designing highly efficient and stable photocatalysts is of vital importance for solar-to-fuel conversion,as a potential strategy to address the concerns of global energy crisis and environmental *** development of novel photocatalytic materials is desirable to overcome those shortcomings of traditional semiconductor photocatalysts.

关键词： catalysts overcome shortcomings

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Shear induced deformation twinning evolution in thermoelectric InSb

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npj Computational materials 2021年第1期7卷 1008-1016页

作者： Zhongtao Lu Ben Huang Guodong Li Xiaolian Zhang Qi An Bo Duan Pengcheng Zhai Qingjie Zhang William A.Goddard III Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics School of ScienceWuhan University of TechnologyWuhanPR China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanPR China Department of Chemical and Materials Engineering University of Nevada RenoRenoNVUSA Materials and Process Simulation Center California Institute of TechnologyPasadenaCAUSA

Twin boundary(TB)engineering has been widely applied to enhance the strength and plasticity of metals and alloys,but is rarely adopted in thermoelectric(TE)*** previous first-principles results showed that nanotwins can strengthen TE Indium Antimony(InSb)through In–Sb covalent bond rearrangement at the ***,we further show that shear-induced deformation twinning enhances plasticity of *** demonstrate this by employing large-scale molecular dynamics(MD)to follow the shear stress response of flawless single-crystal InSb along various slip *** observed that the maximum shear strain for the (111)[112] slip system can be up to 0.85 due to shear-induced deformation *** attribute this deformation twinning to the“catching bond”involving breaking and re-formation of In–Sb bond in *** finding opens up a strategy to increase the plasticity of TE InSb by deformation twinning,which is expected to be implemented in other isotypicⅢ–V semiconductors with zinc blende structure.

关键词： deformation plasticity Shear

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Boosting the electrochemical performance and reliability of conducting polyme microelectrode via intermediate graphene for on-chip asymmetric micro-supercapacitor

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Journal of Energy Chemistry 2020年第10期29卷 224-232页

作者： Muhammad Tahir Liang He Wei Yang Xufeng Hong Waqas Ali Haider Hui Tang Zhe Zhu Kwadwo Asare Owusu Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina

High-performance anode is hurdle for on-chip planar microsupercapacitor(MSC).Polypyrrole(PPy)is a highly attractive pseudocapacitive material,but its low cycling stability,and low adhesion with current collector hinder its *** we propose one-prong generic strategy to boost the cycling stability of *** our strategy,the electrochemical deposition of multilayered reduced graphene oxide(rGO)on micropatterned Au is utilized,and the resultant rGO@Au pattern is then used for growing highly porous PPy nanostructures by facile electrochemical *** fabricated PPy anode on rGO@Au has quasi rectangular cyclic voltammetry curves up to-0.7 V and exceptional cycling stability,retaining82%of capacitance after 10,000 charge/discharge cycles in 2 M KCl *** outstanding reliability of PPy on rGO@Au is due to the flexibility of rGO,accommodating structural pulverization and providing a promising background for the nucleation of highly porous ***,an all-polymer based asymmetric aqueous MSC(AMSC)is constructed with PPy anode and PEDOT cathode,which exhibited excellent electrochemical performance compared with conventional symmetric MSCs based on conducting *** constructed AMSC delivered a maximum areal capacitance of 15.9 m F cm^-2(99.3 F cm^-3),high specific energy and power densities of 4.3μWh cm^-2(27.03 mWh cm^-3)and 0.36 W cm^-2(0.68 W cm^-3)at 1.4 V,*** enhanced electrochemical performances can be illustrated by nucleation mechanism,in which surface topology of r GO generates a promising background for nucleation and electrochemical growth of nanoporous pseudocapacitive conducting polymers with superior interfacial contact and improved surface area.

关键词： Electrochemical polymerization Nucleation Asymmetric microsupercapacitors

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Carboxymethyl chitosan-alginate enhances bone repair effects of magnesium phosphate bone cement by activating the FAK-Wnt pathway

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Bioactive materials 2023年第2期20卷 598-609页

作者： Ling Yu Tian Gao Wei Li Jian Yang Yinchu Liu Yanan Zhao Ping He Xuefeng Li Weichun Guo Zhengfu Fan Honglian Dai Department of Orthopedic Surgery I(Spine Surgery) Renmin Hospital of Wuhan UniversityWuhan430060China Department of Bone and Soft Tissue Tumor Key Laboratory of Carcinogenesis and Translational ResearchMinistry of EducationPeking University Cancer Hospital&InstituteBeijing100000China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Biomedical Materials and Engineering Research Center of Hubei ProvinceWuhan University of TechnologyWuhan430070China Department of Orthopedic Surgery Renmin Hospital of ShayangJingmen448200China

There is a continuing need for artificial bone substitutes for bone repair and reconstruction,Magnesium phosphate bone cement(MPC)has exceptional degradable properties and exhibits promising ***,its mechanical strength needs improved and its low osteo-inductive potential limits its therapeutic application in bone *** functionally modified MPC by using a polymeric carboxymethyl chitosan-sodium alginate(CMCS/SA)gel *** had the advantages of:improved compressive strength,ease of handling,and an optimized interface for bioactive bone *** new composites with 2%CMCS/SA showed the most favorable physicochemical properties,including mechanical strength,wash-out resistance,setting time,injectable time and heat ***,the composite promoted the attachment and proliferation of osteoblast *** was also found to induce osteogenic differentiation in vitro,as verified by expression of osteogenic *** terms of molecular mechanisms,data showed that new bone cement activated the Wnt pathway through inhibition of the phosphorylation ofβ-catenin,which is dependent on focal adhesion *** micro-computed tomography and histological analysis,we found that the MPC-CMCS/SA scaffolds,compared with MPC alone,showed increased bone regeneration in a rat calvarial defect ***,our study suggested that the novel composite had potential to help repair critical bone defects in clinical practice.

关键词： Critical bone defect Magnesium phosphate cement Carboxymethyl chitosan Sodium alginate Osteogenic differentiation

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Smart ZnS@C filler for super-anticorrosive self-healing zinc-rich epoxy coating

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Nano Research 2022年第5期15卷 4756-4764页

作者： Kai Yang Yixue Duan Guicheng Liu Guoyan Ma Hao Fu Xuyong Chen Manxiang Wang Gangqiang Zhu Woochul Yang Yiding Shen Shaanxi Key Laboratory of Chemical Additives for Industry Shaanxi University of Science and TechnologyXi’an 710021China Department of Physics Dongguk UniversitySeoul 04620Republic of Korea State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China College of Chemistry and Chemical Engineering Xi'an Shiyou UniversityXi'an 710065China School of physics and Information Technology Shaanxi Normal UniversityXi’an 710062China

The zinc-rich epoxy cathodic protection coating is the most widely used anticorrosion material for marine ***,traditional conductive fillers lack the intelligent self-healing effect,which limits the long-term anticorrosion ***,with uniform carbon-coated ZnS(ZnS@C)nanoballs as the smart active release filler,we propose an anticorrosive and self-healing zinc-rich maleic anhydride epoxy *** to the high pore filling efficiency of the nanoballs,the water vapor transmission rate of the coating with an initial corrosion efficiency of 99.92%and a low-frequency impedance of|Z|f=10mHz=3.88×10^(10) Ω·cm^(2),was reduced by 52%.The carbon-shell of the nanoball increases electron transmission paths in the coating and improves conductivity by nearly two orders of magnitude,which effectively activates more Zn-sites and extends the cathodic protection ***,once the steel-substrate undergoes regional corrosion,the SO_(4)^(2-)hydrolyzes from the ZnS-core of the nanoball and reacts with iron ions on the corroded area accurately and intelligently to fill the gap and self-heals into a new dense barrier layer(Fe_(2)(SO_(4))_(3),etc.),which significantly improves the shielding protection ability during the long-term usage of the *** effective anticorrosion time of the proposed coating could be up to 3,400 h.

关键词： smart ZnS@C fller microemulsion-carbonization method zinc-rich epoxy coating anticorrosion self-healing

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3D Bi-continuous interpenetrating networks enables Al-matrix composites with enhanced mechanical energy absorption capacity

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Composite Structures 2025年 368卷

作者： Chen, Fei Ding, Jie Jia, Mingyong Wu, Yueqi Zhang, Chi State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China International School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China

The bi-continuous interpenetrating structure of ceramic reinforcement and Al matrix is expected to achieve a breakthrough in the trade-off between strength and toughness of Al-matrix composites. This study reports a promising method using biomimetic design and hybrid technology combining additive manufacturing with melt infiltration to prepare Al-matrix composites with high geometric freedom and superior mechanical properties. The Al2O3/Al interpenetrating phase composites (IPCs) with BCC and Gyroid lattice-based ceramic scaffolds exhibit simultaneously enhanced compressive stress, energy absorption, and specific energy absorption. The highest gain in specific energy absorption of Al2O3/Al IPCs reveals an impressive sixfold increase. These significant improvements are attributed to damage delocalization, interfacial interactions, and geometric effects of ceramic lattices. Overall, this study provides a potential strategy for lightweight Al-matrix composites in automotive and aerospace applications. © 2025

关键词： Weldability

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Electrically variable interfaces in polymer nanocomposite dielectrics

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Physical Review B 2024年第18期109卷 184205-184205页

作者： Wen-Zhi Luo Zhong-Hui Shen Yang Shen Long-Qing Chen Ce-Wen Nan State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices Wuhan University of Technology Wuhan 430070 China School of Materials and Microelectronics Wuhan University of Technology Wuhan 430070 China School of Materials Science and Engineering State Key Lab of New Ceramics and Fine Processing Tsinghua University Beijing 100084 China Department of Materials Science and Engineering The Pennsylvania State University University Park Pennsylvania 16802 United States

Polymer nanocomposites generally exhibit unexpected dielectric/electrical performance far beyond the sum of every component, which is mainly due to the interface effect induced by the differences in structures and properties between the nanofillers and the polymer matrix. However, understanding the capricious interface effect in different polymer nanocomposites remains a major challenge. Here, we perform density functional theory calculations to investigate the atomic/molecular configurations and local charge behaviors of heterogeneous interfaces between the fillers of perovskites, oxides, two-dimensional materials, and polar/nonpolar polymers. Our findings demonstrate that atomic reconfiguration takes place during the formation of the inorganic/organic interface in order to minimize the overall energy of the system. Significant charge accumulation occurs at heterogeneous interfaces due to electron redistribution, especially for the examples of HfO2 and negatively charged Ca2Nb3O10. When applying an electric field, local polarization, especially around the interface, will be distorted and enhanced as a result of interfacial interaction. Even for the nonpolar polymer with linear dielectric oxides such as TiO2, induced dipole moments also appear near the interface, leading to the improvement of overall polarizability. The outcomes of our study verify that the variable electrical behaviors at the interfaces are highly dependent on the feature of every component constituting the inorganic/organic interface, which offers valuable insights for optimizing the experimental design of heterogeneous interfaces in polymer nanocomposites.

关键词： Electric polarization Solid-solid interfaces Density functional calculations

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