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Design Fe-based Eutectic Medium-Entropy Alloys Fe_2NiCrNb_x

Acta Metallurgica Sinica(English Letters) 2021年第8期34卷 1103-1108页

作者： Jiafen Song Zishu Chai Jian Zheng Qingfeng Wu Feng He Zenan Yang Junjie Li Jincheng Wang Haiou Yang Zhijun Wang State Key Laboratory of Solidifi cation Processing Northwestern Polytechnical UniversityXi’an 710072China Science and Technology On Advanced High Temperature Structural Materials Laboratory Beijing Institute of Aeronautical MaterialsBeijing 100095China

High-entropy alloys have attracted broad research interests due to their unique and intriguing mechanical properties. As a category of high-entropy alloys, eutectic high-entropy alloys combine the advantages of eutectic and high-entropy alloys, with excellent mechanical properties and casting properties. Some eutectic high-entropy alloys have been developed and shown exciting properties. In this paper, based on the physical metallurgy of eutectic high-entropy alloy, medium-entropy alloy Fe_(2)NiCrNb_(x) was designed. The as-cast alloy is composed of FCC and Laves phases, Nb element promotes the formation of primary Laves phase, and the hardness of the alloy increases with the increase in Nb element. Among the four alloys, the eutectic chemical composition at eutectic point is Fe_(2)NiCrNb_(0.34);the alloy has a good strength and plastic balance. The ultimate comprehensive strength is 2267 MPa, and the fracture strain is 30.8%. The experiment data and analyses identified the eutectic points and the excellent mechanical behavior. Moreover, the expensive Co element was replaced by Fe element. This cheap medium-entropy alloy has promising prospect in the consideration of the cost performance ratio.

关键词： Eutectic medium-entropy alloy Microstructure Mechanical properties

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Layered manganese phosphorus trisulfides for high-performance lithium-ion batteries and the storage mechanism

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Carbon Energy 2023年第3期5卷 160-169,170,171页

作者： Hailin Shen Yueling Cai Zhongtao Ma Peng Wang Bingkun Guo Jipeng Cheng Qianqian Li Hongtao Wang Zhongyuan Liu Anmin Nie Jinsong Wu Materials Genome Institute Shanghai UniversityShanghaiChina Shanghai Key Laboratory of Mechanics in Energy Engineering School of Mechanics and Engineering ScienceShanghai Institute of Applied Mathematics and MechanicsShanghai UniversityShanghaiChina State Key Laboratory of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhouChina Center for X‐mechanics Zhejiang UniversityHangzhouChina State Key Laboratory of Metastable Materials Science and Technology Center for High Pressure ScienceYanshan UniversityQinhuangdaoChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanChina Nanostructure Research Center Wuhan University of TechnologyWuhanChina

Although advanced anode materials for the lithium-ion battery have been investigated for decades,a reliable,high-capacity,and durable material that can enable a fast charge remains ***,we report that a metal phosphorous trichalcogenide of MnPS_(3)(manganese phosphorus trisulfide),endowed with a unique and layered van der Waals structure,is highly beneficial for the fast insertion/extraction of alkali metal ions and can facilitate changes in the buffer volume during cycles with robust structural *** few-layered MnPS_(3)anodes displayed the desirable specific capacity and excellent rate chargeability owing to their good electronic and ionic *** assembled as a half-cell lithium-ion battery,a high reversible capacity of 380 mA h g^(−1)was maintained by the MnPS_(3)after 3000 cycles at a high current density of 4 A g^(−1),with a capacity retention of close to or above 100%.In full-cell testing,a reversible capacity of 450 mA h g^(−1)after 200 cycles was maintained as *** results of in-situ TEM revealed that MnPS_(3)nanoflakes maintained a high structural integrity without exhibiting any pulverization after undergoing large volumetric expansion for the insertion of a large number of lithium *** kinetics of lithium-ion diffusion,stable structure,and high pseudocapacitance contributed to their comprehensive performance,for example,a high specific capacity,rapid charge-discharge,and long ***_(3)is thus an efficient anode for the next generation of batteries with a fast charge/discharge capability.

关键词： cyclic stability in‐situ TEM MnPS3 pseudocapacitance rate performance

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Zeolite-confined Fe-site Catalysts for the Hydrogenation of CO_(2) to Produce High-value Chemicals

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Chemical Research in Chinese Universities 2024年第1期40卷 78-95页

作者： HAN Xiaoyang XIA Huicong TU Weifeng WEI Yifan XUE Dongping LI Minhan YAN Wenfu ZHANG Jia-Nan HAN Yi-Fan College of Materials Science and Engineering Zhengzhou UniversityZhengzhou450001P.R.China State Key Laboratory of Coking Coal Resources Green Exploitation Zhengzhou UniversityZhengzhou450001P.R.China Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education School of Chemical EngineeringZhengzhou UniversityZhengzhou450001P.R.China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry and College of Chemistry Jilin UniversityChangchun130012P.R.China State Key Laboratory of Chemical Engineering East China University of Science and TechnologyShanghai200237P.R.China

Zeolite-confined Fe-site catalysts(ZFCs)have emerged as superior materials for sustainably producing high-value chemicals through CO_(2) hydrogenation,owing to their adaptable framework,customizable composition,and thermal *** excel in activating,adsorbing,and converting CO_(2) with remarkable efficiency and consistency in *** has sparked a surge in research interest in recent *** review delves into the latest advancements in CO_(2) catalytic hydrogenation to olefins,alcohols,aromatics,and other liquid hydrocarbons,examining the synthesis,modification tactics,and the correlation between structure and performance across various ***,it underscores the pivotal factors affecting performance and sheds light on the mechanisms behind selectivity control in the CO_(2) hydrogenation process facilitated by *** conclude,it presents pressing challenges and strategic recommendations to inspire the development of high-performance,durable ZFCs for CO_(2) hydrogenation applications.

关键词： Zeolite-confined Fe-site catalyst CO_(2) hydrogenation Modification strategy High-value chemical

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The effect of hierarchical single-crystal ZSM-5 zeolites with different Si/Al ratios on its pore structure and catalytic performance

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Frontiers of Chemical Science and Engineering 2021年第2期15卷 269-278页

作者： Yuexin Hou Xiaoyun Li Minghui Sun Chaofan Li Syed ul Hasnain Bakhtiar Kunhao Lei Shen Yu Zhao Wang Zhiyi Hu Lihua Chen Bao-Lian Su Laboratory of Living Materials at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Silicate Material for Architectures Wuhan University of TechnologyWuhan 430070China Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 NamurBelgium Nanostructure Research Centre(NRC) Wuhan University of TechnologyWuhan 430070China Clare Hall University of CambridgeCambridgeCB39ALUK

Hierarchical single-crystal ZSM-5 zeolites with different Si/Al ratios(Hier-ZSM-5-x,where x=50,100,150 and 200)were synthesized using an ordered mesoporous carbon-silica composite as hard ***-ZSM-5-x exhibits improved mass transport properties,excellent mechanical and hydrothermal stability,and higher catalytic activity than commercial bulk zeolites in the benzyl alcohol self-etherification *** show that a decrease in the Si/Al ratio in hierarchical single-crystal ZSM-5 zeolites leads to a significant increase in the acidity and the density of micropores,which increases the final catalytic *** effect of porous hierarchy on the diffusion of active sites and the final catalytic activity was also studied by comparing the catalytic conversion after selectively designed poisoned acid *** poisoned Hier-ZSM-5-x shows much higher catalytic conversion than the poisoned commercial ZSM-5 zeolite,which indicates that the numerous intracrystalline mesopores significantly reduce the diffusion path of the reactant,leading to the faster diffusion inside the zeolite to contact with the acid sites in the micropores predominating in ZSM-5 *** study can be extended to develop a series of hierarchical single-crystal zeolites with expected catalytic performance.

关键词： hierarchical zeolites single crystalline interconnected pores improved diffusion performance benzyl alcohol self-etherification reaction

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Failure Behavior and Mechanism of Vat Photopolymerization Additively Manufactured Al_(2)O_(3) Ceramic Lattice Structures

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Additive Manufacturing Frontiers 2024年第4期3卷 166-177页

作者： Keqiang Zhang Xueqin Zhang Qiaoyu Meng Bin Zhang Zhaoliang Qu Rujie He State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing100081China School of Naval Architecture Ocean and Energy Power EngineeringWuhan University of TechnologyWuhan430070China

Vat photopolymerization additive manufacturing produces lightweight load-bearing ceramic lattice structures that have flexibility,time-efficiency,and high precision,compared to conventional ***,understanding the compression behavior and failure mechanism of such structures under loading remains a *** this study,considering the correlation between the strut angle and bearing capacity,body-centered tetragonal(BCT)lattice structures with varying angles are designed based on a body-centered cubic(BCC)*** Al_(2)O_(3) ceramic lattice structures with varying angles are fabricated by vat *** mechanical properties,deformation process,and failure mechanism of the Al_(2)O_(3) ceramic lattice structures are characterized through a combination of ex-and in-situ X-ray computed tomography(X-CT)compression testing and analyzed using a finite element method(FEM)at macro-and *** results demonstrate that as the angle increases,the stress concentration gradually expands from the node to the strut,resulting in an increased loadbearing ***,the failure mode of the Al_(2)O_(3) ceramic lattice structures is identified as diagonal slip shear *** findings provide a greater understanding of ceramic lattice structure failures and design optimization approaches.

关键词： Ceramic lattice structure Vat photopolymerization additive manufacturing Ex-and in-situ X-ray computed tomography(X-CT) Compression behavior Failure mechanism

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A review of efficient electrocatalysts for the oxygen evolution reaction at large current density

DeCarbon

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DeCarbon 2024年第3期5卷 24-40页

作者： Youtao Yao Jiahui Lyu Xingchuan Li Cheng Chen Francis Verpoort John Wang Zhenghui Pan Zongkui Kou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070PR China Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya572000PR China Hubei Key Laboratory of Fuel Cell Wuhan University of TechnologyWuhan430070PR China Department of Materials Science and Engineering National University of Singapore117574SingaporeSingapore Institute of Materials Research and Engineering(IMRE) A*STAR(Agency for ScienceTechnology and Research)2 Fusionopolis WaySingapore138634Singapore National University of Singapore(Chongqing)Research Institute Chongqing401123PR China School of Materials Science and Engineering Tongji UniversityShanghai201804PR China

Within the framework of achieving global carbon neutrality,utilizing electrocatalytic water splitting to produce“green hydrogen”holds significant promise as an effective *** strategic development of economic,efficient,and robust anode oxygen evolution reaction(OER)catalysts is one of the imminent bottlenecks for scalable application of electrolyzing water into hydrogen and oxygen,particularly under actual yet harsh operating conditions such as large current density(LCD).In this review,we intend to summarize the advances and challenges in the understanding of the electrocatalytic OER at ***,the impact of LCD on the electron transfer,mass transportation efficiency and catalyst stability is identified and ***,five basic principles for catalyst design,namely the dimension of the materials,surface chemistry,creation of electron transfer pathways,synergy among nano-,micro-,and macroscale structures,and catalyst-support interaction,are systematically ***,the correlation between the synergistic function of the multiscale structures and the catalyst-support interaction is highlighted to direct improvements in catalyst efficiency and durability at the ***,an outlook is prospected to further our understanding of these topics and provide related researchers with potential research areas.

关键词： Oxygen evolution reaction Electrocatalyst Large current density Green hydrogen Water splitting

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Enhanced thermoelectric performance and atomic-resolution interfacial structures in BiSbTe thermo-electro-magnetic nanocomposites incorporating magnetocaloric LaFeSi nanoparticles

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Journal of Materiomics 2021年第5期7卷 998-1006页

作者： Lin Xing Wenjun Cui Xiahan Sang Fengxia Hu Ping Wei Wanting Zhu Xiaolei Nie Qingjie Zhang Wenyu Zhao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China NRC(Nanostructure Research Centre) Wuhan University of TechnologyWuhan430070China State Key Laboratory for Magnetism Institute of PhysicsChinese Academy of SciencesBeijing100190China

Incorporating magnetic nanoparticles in thermoelectric(TE)materials introduce magnetic interfaces with additional electron and phonon scattering mechanism for high TE ***,the influence of heterogeneous interfaces between magnetic nanoparticles and TE matrix on electronic and thermal transport remains elusive in the thermo-electric-magnetic ***,using p-type TE material Bi_(0.3)Sb_(1.7)Te_(3)(BST)as matrix and magnetocaloric(MC)material La(Fe_(0.92)Co_(0.08))_(11.9)Si_(1.1)(LFS)nanoparticles as a second phase,TE/MC nanocomposites xLFS/BST(x=0.1%,0.2%,0.3% and 0.4%)were synthesized using spark plasma sintering *** atomic-resolution interfacial structures demonstrate that Te vacancies originating from LFS-BST interfacial reaction decreases the hole concentration of the LFS/BST nanocomposites and enhances the Seebeck *** LFS/BST nanocomposites exhibit lower thermal conductivity due to enhanced phonon scattering by interfaces and *** the nanocomposites have higher ZT than BST matrix,with 0.2% LFS/BST nanocomposite achieving highest ZT=1.11 at 380 *** working current 1.4 A,the device fabricated using 0.2% LFS/BST nanocomposite achieves maximal cooling temperature 4.9 K,which is 58% higher than the ***,the MC properties are retained in all the nanocomposites,which make them a promising candidate to achieve high TE performance and dual TE/MC properties for future applications.

关键词： Thermoelectrics Magnetocaloric materials Bi_(2)Te_(3)La(Fe,Si)_(13) Microstructure Thermoelectric properties

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Ab-initio insight into electrochemical characteristic of Zr2N monolayer as sodium ion battery by O and Se functional group strategy

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Journal of Molecular Liquids 2025年 429卷

作者： Yin, Jiangtao Li, Lingxia Zhang, Wenbo Gong, Shengli Ren, Junqiang Liu, Maocheng Lu, Xuefeng State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals School of Materials Science and Engineering Lanzhou University of Technology Lanzhou730050 China

As a novel type of two-dimensional electrode material, MXene with versatile surface functional groups can provide additional active sites, exhibiting high pseudo capacitance and large specific capacity. This article uses first principles to investigate the electrochemical properties of oxygen and halogen elements modified Zr2N as anode materials for sodium ion batteries. The results indicate that O and Se functionalized Zr2N material is more suitable as an anode material for sodium ion batteries compared to other functionalized materials. Zr2NT2 (Zr2NO2 and Zr2NSe2) have low diffusion barriers to facilitate the diffusion of sodium ions, with a theoretical capacity of 293.29 mAh/g and 151.29 mAh/g, respectively. The open circuit voltage is in the range of 0–1 V, which can prevent the formation of lithium dendrites and ensure the safe operation of the battery. These characteristics are attributed to the redistribution of surface charges for functionalized Zr2N, which results in uniform interaction forces between adsorbed atoms and the matrix, thereby improving the adsorption stability of sodium ions. In summary, this study reveals the energy storage performance mechanism of O and Se functionalized MXene electrode materials at the microscale, laying a solid foundation for subsequent experimental preparation. © 2025 Elsevier B.V.

关键词： Active material Electronic properties First-principles calculations MXene Sodium-ion batteries

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Enhanced CoCrFeNi (TiC) 0.2 high-entropy alloy by thermodynamic treatment

SSRN

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SSRN 2025年

作者： Liang, Shiqing Tu, Bingtian Li, Peiyao Chen, Xiaohong Li, Jiaqi Li, Jun Wei, Qinqin Shen, Qiang Hubei Longzhong Laboratory Hubei Xiangyang441000 China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China State Key Laboratory of Advanced Refractories Wuhan University of Science and Technology Wuhan430081 China

CoCrFeNi based high-entropy alloy has good strength and toughness properties compared to conventional alloys, showing great application prospects in advanced fields such as aerospace structural materials. However, the yield strength of the as-cast CoCrFeNi(TiC)0.2 alloy remains low, limiting its practical application as a high-strength structural material. In this study, we enhance the CoCrFeNi(TiC)0.2 alloy by hot rolling and annealing, which promotes the ultrafine carbide precipitation, partial recrystallization of the alloy matrix, and residual high-density dislocations. The secondphase strengthening of carbide precipitation, fine-grain strengthening of alloy matrix, and dislocation strengthening jointly improve the yield strength. The yield strength of the CoCrFeNi(TiC)0.2 alloy after thermomechanical treatment at 700°C for 1 h has a high yield strength of 865 MPa, ultimate tensile strength of 1047 MPa and uniform elongation of 6.8%. This study provides a theoretical guidance for the composition and technological design of high performance alloys. © 2025, The Authors. All rights reserved.

关键词： Tensile strength

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Structural Evolution and Thermoelectric Performance in (Gete)M(Sb2te3)N Compounds

SSRN

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SSRN 2024年

作者： Chen, Shuo Liu, Keke Luo, Tingting Liao, Lin Yang, Zhen Zhong, Shenlong Wu, Jinsong Su, Xianli Poudeu, Pierre Ferdinand Poudeu Zhang, Qingjie Tang, Xinfeng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Department of Materials Science and Engineering University of Michigan Ann ArborMI48109 United States

Exploring the relationship between crystal structure and thermoelectric performance is a pivotal topic in the thermoelectric field. In this study, we have conducted a comprehensive investigation on the correlation between the structural evolution of (GeTe)m(Sb2Te3)n pseudo-binary system and the thermoelectric properties. The proportion of van der Waals bonds increase with the rising Sb2Te3 content, resulting in an increase in the anisotropy of the electrical conductivity and a decrease in the average sound velocity. Additionally, the cation sites in the crystal lattice of these compounds exhibit a mixed occupancy of Ge/Sb atoms, although the cation sites adjacent to the van der Waals gaps are predominantly occupied by Sb atoms. The ultra-low lattice thermal conductivity of the GST124 and GST147 compounds is mainly attributed to the high concentration of van der Waals bonds and enhanced phonon scattering arising from Ge/Sb mixed cation occupancy and high density of defect structures. The high electrical conductivity combined with the low lattice thermal conductivity enables GST124 and GST147 compounds to achieve a maximum ZT value of 0.56 and 0.57, respectively. Higher thermoelectric performance can be achieved through optimization of the microstructure as well as the carrier concentration. © 2024, The Authors. All rights reserved.

关键词： Anisotropy

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