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Solid polymer electrolytes in all-solid-state lithium metal batteries:From microstructures to Properties

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能源化学:英文版 2023年第6期81卷 358-378,I0009页

作者： Zongxi Lin Ouwei Sheng Xiaohan Cai Dan Duan Ke Yue Jianwei Nai Yao Wang Tiefeng Liu Xinyong Tao Yujing Liu College of Materials Science and Engineering Zhejiang University of TechnologyHangzhou 310014ZhejiangChina

All-solid-state lithium(Li)metal batteries(ASSLMBs)are considered one of the most promising secondary batteries due to their high theoretical capacity and high safety performance.However,low room-temperature ionic conductivity and poor interfacial stability are two key factors affecting the practical application of ASSLMBs,and our understanding of the mechanisms behind these key problems from microscopic perspective is still limited.In this review,the mechanisms and advanced characterization techniques of ASSLMBs are summarized to correlate the microstructures and Properties.Firstly,we summarize the challenges faced by solid polymer electrolytes(SPEs)in ASSLMBs,such as the low roomtemperature ionic conductivity and the poor interfacial stability.Secondly,several typical improvement methods of polymer ASSLMBs are discussed,including composite SPEs,ultra-thin SPEs,SPEs surface modification and Li anode surface modification.Finally,we conclude the characterizations for correlating the microstructures and the Properties of SPEs,with emphasis on the use of emerging advanced techniques(e.g.,cryo-transmission electron microscopy)for in-depth analyzing ASSLMBs.The influence of the microstructures on the Properties is very important.Until now,it has been difficult for us to understand the microstructures of batteries.However,some recent studies have demonstrated that we have a better understanding of the microstructures of batteries.Then we suggest that in situ characterization,nondestructive characterization and sub-angstrom resolution are the key technologies to help us further understand the batteries'microstructures and promote the development of batteries.And potential investigations to understand the microstructures evolution and the batteries behaviors are also prospected to expect further reasonable theoretical guidance for the design of ASSLMBs with ideal performance.

关键词： Lithium metal batteries Solid polymer electrolytes Microstructures Properties

A review of the effect of tungsten alloying on the microstructure and Properties of steels

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Tungsten 2023年第4期5卷 440-466页

作者： Jun-Jie Lian Xiao-Guang Ma Zheng-Yi Jiang Chong Soo Lee Jing-Wei Zhao College of Mechanical and Vehicle Engineering Taiyuan University of TechnologyTaiyuan030024China Engineering Research Center of Advanced Metal Composites Forming Technology and Equipment Ministry of EducationTaiyuan030024China Taiyuan University of Technology-University of Wollongong(TYUT-UOW)Joint Research Center Taiyuan University of TechnologyTaiyuan030024China School of Mechanical MaterialsBiomedical and Mechatronic EngineeringUniversity of WollongongWollongongNSW2522Australia TYUT‑UOW Joint Research Center University of WollongongWollongongNSW2522Australia Graduate Institute of Ferrous and Energy Materials Technology Pohang University of Science and TechnologyPohang37673South Korea

With the continuous development of science and technology,the increasingly severe service environment makes people put forward higher requirements for the performance of alloy steel.Tungsten has unique Properties such as excellent strength,high density and good hardness,and its addition as an alloying element will change the Properties of alloy steel.This paper aims to summarize the effect of the addition of tungsten on the micro structure and mechanical Properties of alloy steel.The background of research and application of tungsten alloyed steel is presented initially.Then,the preparation methods of tungsten alloyed steel are described.Next,the effect of tungsten incorporation on the microstructure of alloy steel is reviewed.Finally,the effects of tungsten addition on the mechanical Properties,corrosion resistance and hydrogen embrittlement resistance of the alloy steel are reviewed.This review provides an outlook on the development of tungsten alloyed steel,which will stimulate more in-depth research and ultimately promote the practical application of tungsten alloyed steel.

关键词： Tungsten Alloy steel Microstructure Properties

Microstructure and Mechanical Properties of Al-11.3Zn-3.2Mg-1.3Cu-0.2Zr-0.1Sr-x Ti Extruded Aluminum Alloy with Different Aging Process

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Journal of Wuhan University of Technology(Materials Science) 2023年第5期38卷 1161-1168页

作者： BAO Guoning XU Xiaojing HUA Yinqun ZHANG Bin WEI Tao HONG Zhiheng LIU Lele HAN Mengnan SHA Shaohui Institute for Advanced Manufacturing and Modern Equipment Technology Jiangsu UniversityZhenjiang 212013China

The influences of adding different amount of Ti(0%,0.39%,0.87%)and three kinds of difierent aging processes(T6,T6I6,RRA)on the microstructure and Properties of Al-11.3Zn-3.2Mg-1.3Cu-0.2Zr-0.1Sr were investigated.Results show that an appropriate amount of Ti can effectively inhibit grain growth and thus achieve the efiect of grain refinement.The contribution of dislocation density and dislocation strengthening become the biggest when Ti content is 0.39%.At the same time,the intergranular corrosion depth is the lowest when Ti content is 0.39%.Among the three aging processes,the alloys reach the greatest hardness and tensile strength in T6I6.The biggest tensile strength reaches 716.77 MPa.However,when aging at RRA,the alloys obtain the greatest elongation,reaching 7.2%,as well as the good corrosion resistance.

关键词： Al-Zn-Mg-Cu Ti content aging process microstructure Properties

Microstructural regulation and Properties enhancement of MgO-CaO ceramics by doping Y_(2)O_(3)

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Journal of Rare Earths 2023年第11期41卷 1771-1779,I0005页

作者： Nian Yi Yan Ma Zhoufu Wang Hao Liu Xitang Wang Yunjie Dong Zhongfeng Xia Yuxuan Zhu Chengji Deng The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081China

MgO-CaO ceramics with enhanced microhardness and hydration resistance were successfully prepared by doping Y_(2)O_(3) in this work.The effects of introducing Y_(2)O_(3) on the microstructure and Properties of MgO-CaO ceramics were investigated.The microstructural regulation effects of Y_(2)O_(3) additive on MgO,CaO,and MgO-CaO ceramics were analyzed comparatively.The results show that Y_(2)O_(3) dissolves into the CaO lattice to form solid solution in CaO ceramics,and no obvious intergranular phase forms.While the Y_(2)O_(3) additive leads to the micro structural reconstruction in MgO and MgO-CaO ceramics.By adding Y_(2)O_(3),SiO_(2) impurity from magnesium source reacts with CaO to form the silicate phases containing Y^(3+)ions in MgO-CaO ceramics.The increase in the MgO/CaO interface and the microstructural reconstruction synergistically improves the microhardness and hydration resistance of MgO-CaO ceramics markedly.

关键词： Y_(2)O_(3) MgO-CaO ceramics Microstructural regulation Reconstruction Properties Rare earths

Vegard’s law deviating Ti_(2)(Sn_(x)Al_(1−x))C solid solution with enhanced Properties

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先进陶瓷(英文) 2023年第8期12卷 1655-1669页

作者： Zhihua Tian Peigen Zhang Wenwen Sun Bingzhen Yan Zhengming Sun School of Materials Science and Engineering Southeast UniversityNanjing 211189China

The achievement of chemical diversity and performance regulation of MAX phases primarily relies on solid solution approaches.However,the reported A-site solid solution is undervalued due to their expected chemical disorder and compliance with Vegard’s law,as well as discontinuous composition and poor purity.Herein,we synthesized high-purity Ti_(2)(Sn_(x)Al_(1−x))C(x=0–1)solid solution by the feasible pressureless sintering,enabling us to investigate their property evolution upon the A-site composition.The formation mechanism of Ti_(2)(Sn_(x)Al_(1−x))C was revealed by thermal analysis,and crystal parameters were determined by Rietveld refinement of X-ray diffraction(XRD).The lattice constant(a)adheres to Vegard’s law,while the lattice constant(c)and internal free parameter(zM)have noticeable deviations from the law,which is caused by the significant nonlinear distortion of Ti_(6)C octahedron as Al atoms are substituted by Sn atoms.Also,the deviation also results in nonlinear changes in their physicochemical Properties,which means that the solid solution often exhibits better performance than end members,such as hardness,electrical conductivity,and corrosion resistance.This work offers insights into the deviation from Vegard’s law observed in the A-site solid solution and indicates that the solid solution with enhanced performance may be obtained by tuning the A-site composition.

关键词： MAX phase Ti_(2)(Sn_(x)Al_(1−x))C Vegard’s law high purity Properties

Hot forging Nb_(4)AlC_(3)ceramics with enhanced Properties

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Journal of Advanced Ceramics 2023年第11期12卷 2032-2040页

作者： Ye Yu Shuai Fu Detian Wan Yiwang Bao Longsheng Chu Qingguo Feng Chunfeng Hu Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China State Key Laboratory of Green Building Materials China Building Materials AcademyBeijing 100024China

Textured Nb_(4)AlC_(3)ceramics were rapidly and efficiently prepared by hot forging through spark plasma sintering(SPS).The longitudinal compression ratio of textured Nb_(4)AlC_(3)ceramics was−78.3%,and the lateral expansion ratio was 32.1%.The grains grew preferentially along the direction perpendicular to the c-axis,forming the texture microstructure.The Lotgering orientation factor f(00l)was calculated to be 0.63.The thermal conductivity of textured Nb_(4)AlC_(3)ceramics along the c-axis direction(11.23 W·m^(−1)·K^(−1))(25℃)was lower than that of untextured ceramics(13.75 W·m^(−1)·K^(−1))(25℃).The electrical conductivity perpendicular to the c-axis direction reached 4.37×10^(6) S·m^(−1)at room temperature.The ordered layered grains increased the resistance of crack propagation,resulting in a higher fracture toughness parallel to the c-axis direction(9.41 MPa·m^(1/2)),which was higher than that of untextured ceramics(6.88 MPa·m1/2).The Vickers hardness tested at 10 N on the texture top surface(7.18 GPa)was higher than that on the texture side surface(6.45 GPa).

关键词： Nb_(4)AlC_(3) texture anisotropy microstructure Properties

Selective Laser Melting of Al-7Si-0.5Mg-0.5Cu:Effect of Heat Treatment on Microstructure Evolution,Mechanical Properties and Wear Resistance

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Acta Metallurgica Sinica(English Letters) 2022年第3期35卷 389-396页

作者： Pei Wang Sijie Yu Jaskarn Shergill Anil Chaubey Jürgen Eckert Konda Gokuldoss Prashanth Sergio Scudino Additive Manufacturing Institute College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen 518060China Institute for Complex Materials IFW DresdenHelmholtzstraBe 2001069 DresdenGermany Institute of Minerals and Materials Technology(IMMT) Bhubaneshwar 751013OrissaIndia Erich Schmid Institute of Materials Science Austrian Academy of SciencesJahnstraBe 128700 LeobenAustria Department of Materials Science Chair of Materials PhysicsMontanuniversitat LeobenJahnstraBe 128700 LeobenAustria Department of Mechanical and Industrial Engineering Tallinn University of TechnologyEhitajete tee 519086 TallinnEstonia CBCMT School of Mechanical EngineeringVellore Institute of TechnologyVellore.Tamil Nadu 632014India Adjunct With National University of Science and Technology aMISi Sa Leninsky Prosp..4.119049 MoscowRussia

Al-7Si-0.5Mg-0.5Cu alloy specimens have been fabricated by selective laser melting(SLM).In this study,the effects of solution treatment,quenching,and artifi cial aging on the microstructural evolution,as well as mechanical and wear Properties,have been investigated.The as-prepared samples show a heterogeneous cellular microstructure with two different cell sizes composed ofα-Al and Si phases.After solution-treated and quenched(SQ)heat treatment,the cellular microstructure disappears,and coarse and lumpy Si phase precipitates and a rectangular Cu-rich phase were observed.Subsequent aging after solution-treated and quenched(SQA)heat treatment causes the formation of nanosized Cu-rich precipitates.The asprepared SLMs sample has good mechanical Properties and wear resistance(compressive yield strength:215±6 MPa and wear rate 2×10^(-13)m^(3)/m).The SQ samples with lumpy Si particles have the lowest strength of 167±13 MPa and the highest wear rate of 6.18×10^(1-13)m^(3)/m.The formation of nanosized Cu-rich precipitates in the SQA samples leads to the highest compressive yield strength of 233±6 MPa and a good wear rate of 5.06×10^(-13)m^(3)/m.

关键词： Selective laser melting Al-Si-Cu-Mg alloy Heat treatment Microstructure Mechanical Properties Wear Properties

Emerging Properties of non-crystalline phases of graphene and boron nitride based materials

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Nano Materials Science 2022年第1期4卷 10-17页

作者： Aleandro Antidormi Luigi Colombo Stephan Roche Catalan Institute of Nanoscience and Nanotechnology(ICN2) CSIC and BISTCampus UABBellaterra08193BarcelonaSpain Department of Materials Science and Engineering The University of Texas at DallasRichardsonTX75080United States ICREA-InstitucióCatalana de Recerca i Estudis Avancats 08010BarcelonaSpain

We review recent developments on the synthesis and Properties of two-dimensional materials which, although being mainly of an sp^(2) bonding character, exhibit highly disordered, non-uniform and structurally random morphologies. The emergence of such class of amorphous materials, including amorphous graphene and boron nitride, have shown superior Properties compared to their crystalline counterparts when used as interfacial films. In this paper we discuss their structural,vibrational and electronic Properties and present a perspective of their use for electronic applications.

关键词： boron amorphous Properties

Elucidation of the structure, antioxidant, and interfacial Properties of flaxseed proteins tailored by microwave treatment

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Journal of Integrative Agriculture 2023年第5期22卷 1574-1589页

作者： YU Xiao DUAN Zi-qiang QIN Xiao-peng ZHU Ying-ying HUANG Feng-hong PENG Deng-feng BAI Yan-hong DENG Qian-chun Oil Crops Research Institute Chinese Academy of Agricultural Sciences/Hubei Key Laboratory of Lipid Chemistry and Nutrition/Key Laboratory of Oilseeds ProcessingMinistry of Agriculture and Rural AffairsWuhan 430062P.R.China College of Food and Bioengineering Zhengzhou University of Light Industry/Henan Key Laboratory of Cold Chain Food Quality and Safety ControlZhengzhou 450002P.R.China

The microwave treatment is commonly applied to flaxseed to release nutrients, inactivate enzymes, remove cyanogens,and intensify flavors. The current study aimed to explore the influences of microwave exposure on the antioxidant and interfacial Properties of flaxseed protein isolates(FPI), focusing on the altering composition and molecular structure.The results showed that after microwave exposure(700 W, 1–5 min), more compact assembly of storage proteins and subsequent permeation by membrane fragments of oil bodies occurred for cold-pressing flaxseed flours. Moreover, the particle sizes of FPI was progressively reduced with the decrement ranged from 37.84 to 60.66%(PProperties between albumin and globulin fractions in FPI. Microwave exposure retained specific phenolic acids and superior in vitro antioxidant activities of FPI. The inferior gas–water interface absorption and the loose/porous assembly structure were observed for the foams prepared by FPI, concurrent with obviously shrinking foaming Properties upon microwave exposure. Improving oil–water interface activities of FPI produced the emulsion droplets with descending sizes and dense interface coating, which were then mildly destabilized due to the lipid leakage and weakened rheological behavior with microwave exposure extended to 5 min. Our findings elucidated that microwave treatment could tailor the application functionality of protein fractions in flaxseed based on their in situ structural remodeling.

关键词： microwave exposure flaxseed protein isolates antioxidant activities interfacial Properties composition structure