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Progress and perspective of high strain NBT-based lead-free piezoceramics and multilayer actuators

Journal of Materiomics 2021年第3期7卷 508-544页

作者： Pengyuan Fan Kai Liu Weigang Ma Hua Tan Qi Zhang Ling Zhang Changrong Zhou David Salamon Shan-Tao Zhang Yangjun Zhang Bo Nan Haibo Zhang School of Materials Science and Engineering State Key Laboratory of Material Processing and Die&Mould TechnologyHuazhong University of Science and TechnologyWuhan430074PR China School of Materials Science and Engineering University of New South WalesSydney2052Australia School of Mechanical and Electrical Engineering Shihezi UniversityShiheziChina College of Materials Science and Engineering Guilin University of Electronic TechnologyGuilin541004PR China Central European Institute of Technology(CEITEC)Brno University of Technology Czech Republic National Laboratory of Solid State Microstructures Department of Materials Science and EngineeringCollege of Engineering and Applied ScienceCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China State Key Laboratory of Automotive Safety and Energy School of Vehicle and MobilityTsinghua UniversityBeijing100084PR China Guangdong HUST Industrial Technology Research Institute Dongguan523808PR China

In this review,the evolution of high strain Na_(0.5)Bi_(0.5)TiO_(3)-based lead-free piezoceramics and their multilayer actuators has been ***,in terms of Na_(0.5)Bi_(0.5)TiO_(3)-based ceramic materials,the origin of high strain,the typical chemical modification methods of obtaining large strain and extrinsic factors affecting the large strain are *** it briefly summarizes the problems existing in Na_(0.5)Bi_(0.5)TiO_(3)-based ceramics for multilayer actuator *** to optimize strain performance by means of microstructure control and phase structure design are also ***,in terms of multilayer actuator,we describe its characteristics,applications and preparation process systematically,as well as the recent development of Na_(0.5)Bi_(0.5)TiO_(3)-based multilayer *** last,perspectives on directions of following work and promising fields for the applications of the materials and their devices are presented.

关键词： Lead-free piezoceramics Bismuth sodium titanate Electric-field-induced strain Multilayer actuators

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Hierarchically Porous Carbonized Pleurotus Eryngii Based Steam Generator for Efficient Solar Evaporation

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SSRN 2022年

作者： Zhou, Zhaozixuan Fu, Zhuan Zhang, Chunhua Gong, Junyao Tang, Wenyang Wei, Bangyang Wang, Jiandong Li, Li Li, Wenbin Xia, Liangjun State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China Institute of Textiles and Clothing The Hong Kong Polytechnic University 999077 Hong Kong College of Textile Science and Engineering Zhejiang Sci-Tech University Hangzhou310018 China Deakin University Institute for Frontier Materials GeelongVIC3216 Australia

Desalination and purification of seawater and wastewater has been considered as an effective strategy to alleviate water shortage. Interfacial solar steam generation utilizing biomass materials as the core of the evaporator has drawn considerable awareness of its distinctive natural structure. Herein, we report a biomass solar evaporator composed of a convenient and reinforced water transport device using carbonized Pleurotus eryngii (C-PE). Benefiting from the microporous carbon skeleton and microchannels, the as-prepared device exhibits excellent water transpiration and rapid evaporation. The hierarchically porous structure of C-PE could entice interior multiple light reflection to enable all-directional light absorption (> 91.7%) and enhance the capability of photothermal conversion. This device shows a high evaporation rate of 1.22 kg m-2 h-1 under 1 kW m-2 power density. Moreover, the high efficiencies of 81.7% under 1 kW m-2 and 95.1% under 4 kW m-2 for C-PE evaporator were attained. Furthermore, using C-PE for extraction of potable condensed water from wastewater samples containing Na+ , heavy metal ions, dyes, and oil shows a promising potential in terms of cost and sewage treatment. The multiple advantages of high evaporation efficiency and wastewater purification endow the C-PE evaporator available for future bio-derived solar-thermal materials and desalination applications. © 2022, The Authors. All rights reserved.

关键词： Evaporators

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Utilization of waste wool fibers for fabrication of wool powders and keratin:a review

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Journal of Leather Science and Engineering 2020年第1期2卷 160-174页

作者： Chunhua Zhang Liangjun Xia Jiajing Zhang Xin Liu Weilin Xu State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200China College of Material Science and Engineering Wuhan Textile UniversityWuhan 430200China State Key Laboratory of Silkworm Genome Biology Ministry of AgricultureSouthwest UniversityChongqing 400715China Institute for Frontier Materials Deakin UniversityGeelongVictoria 3216Australia

Wool fiber contains approximately 95%keratinous proteins,which is one of the most abundant sources of structural ***,a large amount of wool waste is *** appropriate approaches to recycle wool waste and produce value-added products is vital for sustainable development and reducing environmental ***,this paper reviews the mechanical methods of fabricating wool powder,including pan milling,combined wet and air-jet milling,steam explosion,freeze milling,and three-stage *** influencing factors of shape and size,structure,and properties are highlighted to overview of the possible controlling ***,this review summarizes various chemical methods for the extraction of wool keratin,underlining the dissolution efficiency and the structure of wool ***,the application of reused wool particles in textile,biosorbent,and biomaterials are also ***,several perspectives in terms of future research on the fabrication and application of wool particles are highlighted.

关键词： Wool waste Powder Keratin Milling method textile Biomaterial

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Effect of Lanthanum on Microstructure Evolution and Mechanical Behavior of Mg-Al-Mn Alloy

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SSRN 2023年

作者： Li, Xiaoqiang Xu, Qiyong Liu, Yangfan Zhang, Jiantao Liu, Dexue Le, Qichi Wang, Jinhui Zhu, Yunpeng Hu, Wenxin State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology Lanzhou730050 China Key Laboratory of Electromagnetic Processing of Materials Ministry of Education Northeastern University Shenyang110819 China Qinghai Provincial Key Laboratory of New Light Alloys Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming Qinghai University Xining810016 China State Key Laboratory of Baiyunobo Rare Earth Resource Research and Comprehensive Utilization Baotou Research Institute of Rare Earths Baotou014030 China

Abstract: In this study, Mg-1.5Al-xwt%La-Mn (ALaM-x) (x = 0.5, 1, and 2) alloys were prepared by melting and casting followed by hot extrusion at 300 °C. The microstructure evolution and mechanical behavior of the alloys were studied. By observing the microstructure, it was found that the precipitated phases occurred the evolution of Al11La3 → Al2.12La0.88/Al2La → Mg12La with the decrease of Al/La, and the precipitated Al11La3 coarsened gradually with the increase of La amount. After extrusion, the fine rod-like Al11La3 was broken and refined, but the coarse Al11La3 was not completely broken, and aggregated and unevenly distributed in Mg matrix. Compared with the extruded pure Mg, the extruded ALaM-0.5 alloy presented finer microstructure with an average grain size of 1.83 μm and a refinement rate of 90%. The mechanical properties of the alloy exhibited a considerable improvement of TYS~262.5±3.0 MPa, UTS~275.0±2.4 MPa, an increase rate of 124.7% and 52.1%, respectively. Based on theoretical analysis, the high strength of the alloy was mainly attributed to refinement strengthening, dislocation strengthening, precipitation strengthening and texture strengthening, among them, refinement strengthening up to 42%. Furthermore, the inverse Hall-Petch relationship between (d-1/2) and strain hardening exponents (n) was found, and the precipitated phase could delay the weakening trend of strain hardening capacity with decreasing grain size. © 2023, The Authors. All rights reserved.

关键词： Magnesium alloys

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In-Situ Polymerization of a Free-Standing and Tough Gel Polymer Electrolyte for Lithium Metal Batteries

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SSRN 2023年

作者： Wang, Yuli Wang, Zonglei Zhao, Yunyang Yang, Xueting Xu, Jie Ye, Xianke Jiang, Xiancai Chen, Yazhou Li, Chen Ye, Dezhan State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University No.1 Yangguang Avenue Jiangxia District Hubei Wuhan430200 China School of Materials Science and Engineering Wuhan Textile University No.1 Yangguang Avenue Jiangxia District Hubei Wuhan430200 China School of Chemical Engineering Fuzhou University Fuzhou350108 China Fuzhou University China Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian116023 China

In-situ polymerization of gel polymer electrolytes (GPEs) is expected to be promising approach to solve the safety and interfacial problems of lithium ion battery, but it is still challenging ways to tradeoff the high electrochemical properties and mechanical toughness. Here, 30 um thickness of free-standing GPEs with extremely high monomer conversion were obtained by in-situ UV approach on lithium metal anode within only few seconds. The coordination of amide and aliphatic carbonyl groups with lithium ion endows the tough mechanical properties, which tensile strength and elongation at break reach up to ~1.0 MPa and ~920%. Furthermore, the inflammability of dry polymer matrix and a good degree of graphitization on the surface of burned polymer gel contribute to its flame resistance. The ionic conductivity and lithium ion transfer at room temperature are up to 1.03 mS/cm and 0.44, respectively. Finally, Li/LiFePO4 half cells assembled with the optimized GPEs exhibit high charge/discharge efficiency and stable cycle performance at 0.5C rate, delivering 77.44% of capacity retention and 97.41% of columbic efficiency after 1000 cycles. © 2023, The Authors. All rights reserved.

关键词： Ions

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Enhanced mechanical and hydrophilic properties of polyurethane composites via rational design of down powder incorporation

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materials Letters 2025年 398卷

作者： Ruixue Wang Wenwen Shi Pei Lyu Hongli Long Chunhua Zhang Xin Liu State Key Laboratory of New Textile Materials and Advanced Processing Wuhan 430073 China School of Textile Science and Engineering Wuhan Textile University Wuhan 430200 China School of Materials Science and Engineering Wuhan Textile University Wuhan 430200 China

A polyurethane/down powder (PU/DP) composite film with exceptional thermomechanical properties and moisture permeability was successfully fabricated via a hybrid nonsolvent-induced phase separation coupled with solvent evaporation (HNIPS-SE) technique. This methodology, employing a binary solvent system (DMF:TOL = 1:1), demonstrated efficacy in enhancing mechanical performance while preserving the structural integrity of DP. Notably, the incorporation of 50 wt% DP yielded a composite film exhibiting a strain value of 724.0 ± 126 %, representing a 164 % enhancement compared to pure PU films prepared in DMF. Furthermore, the PU/DP composite demonstrated favorable biocompatibility, positioning it as a viable candidate for biomaterial applications.

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Influenza viruses and SARS-CoV-2 diagnosis via sensitive testing methods in clinical application

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Heliyon 2024年第18期10卷 e36410页

作者： Zhang, Le Li, Chunwen Shao, ShaSha Zhang, Zhaowei Chen, Di Department of Critical Care Medicine Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China School of Ecology and Environment Tibet University Lhasa 850000 China Department of Emergency Medicine The Second Affiliated Hospital of Chongqing Medical University Chongqing 400010 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies School of Bioengineering and Health Wuhan Textile University Wuhan 430200 China

The identification of influenza viruses and SARS-CoV-2 has garnered increasing attention due of their longstanding global menace to human life and health. The point-of-care test is a potential approach for identifying influenza viruses and SARS-CoV-2 in clinical settings, leading to timely discovery, documentation, and treatment. The primary difficulties encountered with conventional detection techniques for influenza viruses and SARS-CoV-2 are the limited or inadequate ability to identify the presence of the viruses, the lack of speed, precision, accuracy, sensitivity, and specificity, often resulting in a failure to promptly notify disease control authorities. Recently, point-of-care test methods, along with nucleic acid amplification, optics, electrochemistry, lateral/vertical flow, and minimization, have been demonstrated the characteristics of reliability, sensitivity, specificity, stability, and portability. A point-of-care test offers promising findings in the early detection of influenza viruses and SARS-CoV-2 in both scientific research and practical use. In this review, we will go over the principles, advantages, limitations, and real-world applications of point-of-care diagnostics. The significance of constraints of detection, throughput, sensitivity, and specificity in the analysis of clinical samples in settings with restricted resources is underscored. This discussion concludes with their prospects and challenges. © 2024

关键词： Influenza viruses Point of care test Rapid SARS-CoV-2 Sensitivity

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Polymer Mechanochemistry in Confined Spaces

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Angewandte Chemie 2024年第1期137卷

作者： Hui Hu Prof. Yang Zhou Prof. Bin Xi Prof. Yuanchao Li School of Materials Science and Engineering Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education Sun Yat-Sen University Guangzhou 510006 China School of Textile Science and Engineering State Key Laboratory of New Textile Materials and Advanced Processing Technology Wuhan Textile University Wuhan 430200 China

With the development of mechanophores, polymer mechanochemistry has emerged as a powerful tool for creating force-responsive materials with a variety of desired functions, ranging from color change to molecular release. However, it remains challenging to improve the efficiency of mechanochemical activation, especially for mechanophores embedded within polymer networks, which has profound implications for translating mechanochemical responses into materials-centered applications. The physical and chemical conditions under spatial confinement differ significantly from those in the surrounding bulk environment, offering opportunities to facilitate mechanochemical activation. In this Minireview, we discuss and summarize recent progress in polymer mechanochemistry within confined spaces including surfaces/interfaces, polymer assemblies, and other nanostructures, specifically focusing on the effects of spatial confinement on the enhancement of mechanophore activation. We envision that combining confinement effects with advances in molecular and materials engineering will further improve the activation efficiency, capitalizing more fully on the potential of mechanophores toward practical applications.

关键词： polymer mechanochemistry confined spaces activation mechanophores confinement effects

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Carbon Quantum Dots Doped Ni3se4/Co9se8/Fe3o4 Multilayer Nanosheets Prepared by One-Step Solvothermal Method to Boost Electrocatalytic Oxygen Evolution

SSRN

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SSRN 2022年

作者： Zhang, Yao Wang, Runze Zhu, Longqi Li, Xu Sun, Caixia Liu, Haizhen Zhu, Lei Wang, Kuikui Institute of Materials for Energy and Environment Laboratory of New Fiber Materials and Modern Textile Growing Basis for State Key Laboratory College of Materials Science and Engineering Qingdao University Qingdao266071 China College of Basic Medical Qingdao Binhai University Qingdao266555 China Material Corrosion and Protection Key Laboratory of Sichuan province Zigong643000 China Key Laboratory of New Metallic Functional Materials and Advanced Surface Engineering in Universities of Shandong School of Mechanical and Electronic Engineering Qingdao Binhai University Shandong Qingdao266555 China MOE Key Laboratory of New Processing Technology for Non-ferrousMetals and Materials Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials Guangxi University Guangxi Nanning530004 China

Oxygen evolution reaction is a momentous part of electrochemical energy storage and conversion devices such as rechargeable metal-air batteries. It is particularly urgent to develop low-cost and efficient electrocatalysts for oxygen evolution reactions. As a potential substitute for noble metal electrocatalysts, transition metal selenides are still challenging in improving the activity of oxygen evolution reaction and the research of reaction intermediates. In this study, a simple one-step solvothermal method was used to prepare a polymetallic compound carbon matrix composite (Co 9 Se 8 /Ni 3 Se 4 /Fe 3 O 4 @C) with a multilayered nanosheet structure. It exhibited good OER activity in an alkaline electrolyte solution with an overpotential of 252 mV at 10 mA/cm 2 and a Tafel slope of 123 mV/dec in an alkaline medium. Besides, this catalyst also showed excellent performance in the 8 hours stability test. The composite presents a multi-layer sheet structure, which effectively improves the contact between the active site and the electrolyte. The selenide formed by Ni and Co has a synergistic effect and improves the electrochemical performance together. The participation of Fe 3 O 4 reduces the bond energy of the intermediate oxygen evolution reaction. In addition, carbon quantum dots have rich heteroatoms and electron transferability, which improves the electrochemical properties of the composites. This work provides a new strategy for the preparation of highly efficient OER electrocatalysts utilizing the multimetal synergistic effect. © 2022, The Authors. All rights reserved.

关键词： Semiconductor quantum dots

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Dislocation-mediated migration of interphase boundaries

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Journal of materials Science & technology 2019年第11期35卷 2714-2726页

作者： Zhipeng Sun Fuzhi Dai Ben Xu Wenzheng Zhang School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China Science and Technology of Advanced Functional Composite Laboratory Aerospace Research Institute of Materials and Processing TechnologyBeijing 100076China Key Laboratory of Advanced Materials(MOE) State Key Laboratory of New Ceramics and Fine ProcessingChina

Faceted interphase boundaries(IPBs)are commonly observed in lath-shaped precipitates in alloys consisting of simple face-centred cubic(fcc),body centred-cubic(bcc)or hexagonal closed packed(hcp)phases,which normally contain one or two sets of parallel *** influence of these dislocations on interface migration and possible accompanying long-range strain field remain *** elucidate this,we carried out atomistic simulations to investigate the dislocation-mediated migration processes of IPBs in a pure-iron *** results show that the migration of these IPBs is accompanied with the slip of interfacial dislocations,even in high-index slip planes,with two migration modes were observed:the first mode is the uniform migration mode that occurs only when all of the dislocations slip in a common slip plane.A shear-coupled interface migration was observed for this *** other interfaces propagate in the stick-slip migration mode that occurs when the dislocations glide on different slip planes,involving dislocation reaction or tangling.A quantitative relationship was established to link the atomic displacements with the dislocation structure,slip plane,and interface *** macroscopic shear deformation due to the effect of overall atomic displacement shows a good agreement with the results obtained based on the phenomenological theory of martensite *** findings have general implications for the understanding of phase transformations and the surface relief effect at the atomic scale.

关键词： Interphase boundary migration O-line interface Shear-coupled interface migration Dislocation gliding Atomic displacement

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