检索结果-内蒙古大学图书馆

Incorporation of Ionic Conductive Polymers into Sulfide Electrolyte-Based Solid-State Batteries to Enhance Electrochemical Stability and Cycle Life

引用

Energy & Environmental materials 2024年第6期7卷 4-12页

作者： Juhyoung Kim Woonghee Choi Seong-Ju Hwang Dong Wook Kim Advanced Materials Division Korea Research Institute of Chemical Technology(KRICT)Daejeon 34114Korea Department of Material Science and Engineering Yonsei UniversitySeoul 03722Korea Department of Material Science and Engineering Seoul National UniversitySeoul 08826Korea Advanced Materials and Chemical Engineering University of Science and Technology(UST)Daejeon 34113Korea

Sulfide-based inorganic solid electrolytes are promising materials for high-performance safe solid-state *** high ion conductivity,mechanical characteristics,and good processability of sulfide-based inorganic solid electrolytes are desirable properties for realizing high-performance safe solid-state batteries by replacing conventional liquid ***,the low chemical and electrochemical stability of sulfide-based inorganic solid electrolytes hinder the commercialization of sulfide-based safe solid-state ***,the instability of sulfide-based inorganic solid electrolytes is intensified in the cathode,comprising various *** this study,carbonate-based ionic conductive polymers are introduced to the cathode to protect cathode materials and suppress the reactivity of sulfide *** instruments,including electrochemical spectroscopy,X-ray photoelectron spectroscopy,and scanning electron microscopy,confirm the chemical and electrochemical stability of the polymer electrolytes in contact with sulfide-based inorganic solid ***-based solid-state cells show stable electrochemical performance over 100 cycles when the ionic conductive polymers were applied to the cathode.

关键词： composite cathode electrochemical stability ionic conductive polymer solid-state battery sulfide solid electrolyte

来源：评论

学校读者我要写书评

暂无评论

In situ constructing lamella-heterostructured nanoporous CoFe/CoFe2O4 and CeO2-x as bifunctional electrocatalyst for high-current-density water splitting

引用

稀有金属（英文版） 2025年第2期44卷 1053-1066页

作者： Yue Deng Jin Wang Shao-Fei Zhang Zhi-Jia Zhang Jin-Feng Sun Tian-Tian Li Jian-Li Kang Hao Liu Shi Bai Hebei Key Laboratory of Flexible Functional Materials/Hebei Key Laboratory of Material Near-Net Forming Technology School of Materials Science and EngineeringHebei University of Science and TechnologyShijiazhuang 050018China School of Materials Science and Engineering Institute of Quantum Materials and DevicesState Key Laboratory of Separation Membrane and Membrane ProcessesTiangong UniversityTianjin 300387China School of Materials Science and Engineering Tianjin UniversityTianjin 300380China Materials Science and Technology Research Department Ji Hua LaboratoryFoshan 528000China Advanced Laser Processing Research Team RIKEN Center for Advanced PhotonicsSaitama 351-0198Japan

The stability and electrocatalytic efficiency of transition metal oxides for water splitting is determined by geometric and electronic structure,especially under high current ***,a newly designed lamella-heterostructured nanoporous CoFe/CoFe2O4 and CeO2-x,in situ grown on nickel foam(NF),holds great promise as a high-efficient bifunctional electrocatalyst(named R-CoFe/Ce/NF)for water *** characterization verifies surface reconstruction from CoFe alloy/oxide to highly active CoFeOOH during in situ electrochemical *** virtues of three-dimensional nanoporous architecture and abundant electroactive CoFeOOH/CeO2-x heterostructure interfaces,the R-CoFe/Ce/NF electrode achieves low overpotentials for oxygen evolution(η10=227 mV;η500=450 mV)and hydrogen evolution(η10=35 mV;η408=560 mV)reactions with high nor-malized electrochemical active surface areas,***,the alkaline full water splitting electrolyzer of R-CoFe/Ce/NF‖R-CoFe/Ce/NF achieves a current den-sity of 50 mA·cm-2 only at 1.75 V;the decline of activity is satisfactory after 100-h durability test at 300 mA·*** functional theory also demonstrates that the elec-tron can transfer from CeO2-x by virtue of O atom to CoFeOOH at CoFeOOH/CeO2-x heterointerfaces and enhancing the adsorption of reactant,thus optimizing electronic structure and Gibbs free energies for the improvement of the activity for water splitting.

关键词： Lamellar nanoporous structure Electronic structure regulation High current density Theoretical calculation Overall water splitting

来源：评论

学校读者我要写书评

暂无评论

The effect of room temperature magnetic field on photoluminescence of Mn:CsPbBr_(3) quantum dots prepared by one-pot method in air

引用

Nano Research 2025年第4期18卷 561-568页

作者： Mengwei Chen Chenguang Shen Wei Huang Yingping Yang Jie Shen Department of Physics School of Physics and MechanicsWuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China

The generation and manipulation of spin-polarized electrons at room temperature are essential for the development of advanced spin-optoelectronic *** this work,a one-pot method was used to successfully synthesize homogenous Mn:CsPbBr_(3) perovskite quantum dots in air with particle sizes of 7−8 *** effects of Mn doping on the structure,optical and magnetic properties of CsPbBr_(3) quantum dots were *** findings demonstrated proper Mn doping improved the crystallinity and photoluminescence(PL)of quantum *** prepared quantum dots have a narrow full width at half maximum emission(FWHM)of about 17−20 *** magnetic properties of the doped samples and the effect of the magnetic field on the PL spectra properties were *** results show that trace Mn doping can improve the room-temperature ferromagnetism of CsPbBr_(3) quantum *** with magnetic elements makes CsPbBr_(3) quantum dots more responsive to the applied magnetic *** at a lower 50 mT magnetic field,the PL peak of Mn:CsPbBr_(3) still declined 5.91%.Mn:CsPbBr_(3) quantum dots are a new type of multifunctional material that is beneficial to spintronics *** work demonstrates a low-cost synthesis *** should make all-inorganic perovskite quantum dots a promising material for room-temperature spin optoelectronic devices.

关键词： CsPbBr_(3)quantum dots Mn doping one-pot method ferromagnetism magnetic field

来源：评论

学校读者我要写书评

暂无评论

Evidence of microstructural evolution linked to non-monotonic distribution of micromechanical properties induced by shot peening

引用

材料科学技术（英文版） 2025年第4期207卷 238-245页

作者： Guoxin Lu Qiang Wang Bonnie Attard Huhu Su Shijian Zheng Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationSchool of Materials Science and EngineeringShandong UniversityJinan250061China Aviation Key Laboratory of Science and Technology on Advanced Corrosion and Protection for Aviation Material AECC Beijing Institute of Aeronautical MaterialsBeijing100095China Department of Metallurgy and Materials Engineering University of MaltaMSD2080Malta Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Materials Science and EngineeringHebei University of TechnologyTianjin300130China

The residual stress field induced by surface strengthening processes such as mechanical shot peening and other forms of plastic deformation does not generally exhibit a simple"monotonic"distribution *** researchers have analyzed this fact from a mechanical perspective based on Hertz ***,the micro/nano-scale microstructural changes corresponding to the distribution of residual stress fields still appear to be *** this study,we focused on a widely used material in aviation manufacturing,namely nickel-based superalloy GH4169,as our experimental *** subjected GH4169 alloy to me-chanical strengthening treatment using a shot peening intensity of 0.25 mmA,followed by quantitative testing of micromechanical performance indicators such as microhardness and residual *** thor-oughly investigate the relationship between micromechanical properties and microstructure changes,we utilized transmission electron microscopy(TEM)to observe and analyze shot-peened materials at differ-ent *** findings revealed that the most severe microstructural distortion induced by mechanical shot peening in GH4169 alloy was likely to occur within a depth range of 25 to 75 *** observation aligns with the actual phenomenon that the maximum microhardness and maximum residual compres-sive stress did not manifest on the outermost surface of the *** presenting a detailed analysis of deformation defects such as dislocations,stacking faults,and twinning in different depths of mechan-ically strengthened layers,our study contributes to a deeper understanding and practical application of post-processing technologies based on plastic deformation.

关键词： Mechanical shot peening Surface strengthening Residual stress Microstructure

来源：评论

学校读者我要写书评

暂无评论

In-situ scanning Kelvin probe force microscopy on the diverse hydrogen trapping behaviours around incoherent NbC nanoprecipitates

引用

Journal of materials science & technology 2024年第27期194卷 216-224页

作者： Binglu Zhang Zhaoxiang Ma Yuan Ma Yongqing Chen Baolong Jiang Yu Jia Rongjian Shi Lin Chen Yang He Lijie Qiao Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Corrosion and Protection Center Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China College of Nuclear Equipment and Nuclear Engineering Yantai UniversityYantai 264005China Department of Materials Science and Engineering School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science and EngineeringHainan UniversityHaikou 570228China College of Safety and Ocean Engineering China University of Petroleum(Beijing)Beijing 102249China

One of the most intriguing methods of mitigating the hydrogen embrittlement of steels entails nano-precipitates that can trap H from enriching at vulnerable ***,controversial findings have been reported on whether the incoherent NbC precipitates trap ***,by using in-situ scan-ning Kelvin probe force microscopy(SKPFM),we reveal the dynamic interaction of H with the border area of incoherent NbC nanoprecipitates in *** indicate that the interaction between H flux and the interfaces varies amongst different precipitates,implying that H-trapping behaviours of incoherent NbC precipitates could be intrinsically *** origins underlying the distinct behaviours are analyzed.

关键词： Hydrogen embrittlement Scanning Kelvin probe force microscopy(SKPFM) Carbide precipitates TEM High-strength low-alloy(HSLA)steels

来源：评论

学校读者我要写书评

暂无评论

Unravelling precipitation behavior and mechanical properties of Al-Zn-Mg-Cu alloy

引用

Journal of materials science & technology 2025年第1期204卷 177-189页

作者： Sang-Hwa Lee Tae-Young Ahn Sung-Il Baik David NSeidman Seok-Jae Lee Young-Kook Lee Kwangjun Euh Jae-Gil Jung Division of Advanced Materials Engineering Jeonbuk National UniversityJeonju54896Republic of Korea Advanced Metals Division Korea Institute of Materials ScienceChangwon51508Republic of Korea Department of Materials Science and Engineering Yonsei UniversitySeoul03722Republic of Korea Materials Safety Research Division Korea Atomic Energy Research InstituteDaejeon34057Republic of Korea Department of Materials Science and Engineering Northwestern UniversityEvanstonIL60208USA Northwestern University Center for Atom-probe Tomography EvanstonIL60208USA Research Center for Advanced Materials Development Jeonbuk National UniversityJeonju54896Republic of Korea Graduate Institute of Ferrous&Eco Materials Technology Pohang University of Science and TechnologyPohang37673Republic of Korea

We investigate the effect of aging temperature on precipitation behavior and mechanical properties of an Al-7.6Zn-2.7Mg-2.0Cu-0.1Zr-0.07Ti(wt.%)alloy by evaluating the matrix’s microhardness,electrical resistivity,and tensile properties:additionally,employing X-ray diffraction(XRD),differential scanning calorimetry(DSC),transmission electron microscopy(TEM),and atom-probe tomography(APT)to charac-terize this *** nanoprecipitates forming under peak-aging conditions vary with aging temperature,forming coherent GPI zones at 80℃,GPII zones with minorη’at 120-150℃,andη’/ηwith minor GP zones at 180-220℃.GPI and GPII zones forming at 80-150℃ contain similar concentrations of solute atoms(11Zn-9Mg-(<1.0)Cu(at.%)),whereas theη’/ηnanoprecipitates forming at 180℃ contain larger concentrations of solute atoms(28Zn-24Mg-3.4Cu(at.%)).The strength of the peak-aged alloy decreases with increasing aging temperature owing to the increasing size and decreasing number density of the *** peak-aging conditions,precipitation strengthening originates mainly from dislo-cation shearing at 80-150℃ and from Orowan bypassing at temperatures above 180℃.The shearable to non-shearable transition of the nanoprecipitates at 180℃ reduces the strain hardening rate,thereby decreasing the alloy’s ductility.

关键词： Aluminum alloys Precipitation Tensile properties Transmission electron microscopy Atom probe tomography

来源：评论

学校读者我要写书评

暂无评论

High-temperature elemental segregation induced structure degradation in high-entropy fluorite oxide

引用

Journal of advanced Ceramics 2024年第3期13卷 310-322页

作者： Yixuan Hu Mariappan Anandkumar Yumeng Zhang Joydip Joardar Atul Suresh Deshpande Xiaodong Wang Kolan Madhav Reddy School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Materials Science and Metallurgical Engineering Indian Institute of Technology HyderabadSangareddy 502285India International Advanced Research Centre for Powder Metallurgy and New Materials(ARCI) Hyderabad 500005India

Fluorite-structured oxides constitute an important category of oxides with a wide range of high-temperature *** the concept of high entropy,high-entropy fluorite oxides(HEFOs)have showcased intriguing high-temperature application ***,unlocking this potential necessitates an assessment of their long-term stability under high-temperature *** this study,we conducted a prolonged heat treatment at 1000℃on typical HEFO,specifically(CeHfZrGdLa)O_(x).After 100 h,high-intensity X-ray diffraction(XRD)revealed a transition from a single-phase fluorite to a multi-phase *** investigation by analytical electron microscoy(AEM)demonstrated that this degradation resulted from facilitated element diffusion and consequent escalating chemical fluctuation at high temperatures,leading to spontaneous segregation and separation of Ce and La elements,forming Ce-rich,La-poor,and La-rich ***,the La-rich phase spontaneously transformed from a fluorite structure(space group Fm3m)to a bixbyite structure(space group Ia3)at elevated temperatures,resulting in the appearance of superstructure reflection in XRD profiles and electron diffraction *** the intricate phase decomposition,the energy band gap showed minimal variation,suggesting potential property stability of(CeHfZrGdLa)O_(x)across a broad range of *** findings offer valuable insights into the future applications of HEFOs.

关键词： phase transition high-temperature stability elemental segregation high-entropy fluorite oxides(HEFOs)

来源：评论

学校读者我要写书评

暂无评论

Microstructural evolution during tempering process and mechanical properties of Cr-Ni-Mo-V/Nb high strength steel

引用

Journal of Iron and Steel Research International 2025年第1期32卷 270-281页

作者： Zi-wei Lv Jing Fan Rui Wang Zhi-qiang Yu Yan Kang Yong Hu Lei-feng Tuo Jürgen Eckert Zhi-jie Yan School of Materials Science and Engineering North University of ChinaTaiyuan 030051ShanxiChina Shanxi Key Laboratory of Advanced Metal Materials for Special Environments North University of ChinaTaiyuan 030051ShanxiChina School of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024ShanxiChina Erich Schmid Institute of Materials Science Austrian Academy of SciencesLeoben 8700Austria Department of Materials Science Chair of Materials PhysicsMontanuniversitat LeobenLeoben 8700Austria

High strength steels exhibit superior mechanical properties due to the unique microstructure,which successfully solves the drawback of the inevitable strength-toughness trade-off that occurs in traditional *** we investigated the effect of matrix and precipitates on mechanical properties of Cr-Ni-Mo-V/Nb steel after water quenching and tempering(150-500℃).The results showed that the microstructure of the present steel is noticeably tuned by changing the tempering *** excellent combination of strength(a yield strength of 1308 MPa with a total elongation of 8.2%)and toughness(Charpy V-notch impact toughness of 40.5 J/cm^(2))is obtained upon tempering at 200℃.This is attributed to the lath martensite containing high dislocation density,the martensite-twin substructure,and the strengthening effects of the precipitated needle-likeε-carbides and spherical VC *** acicularε-carbides are replaced by the rod-shaped Fe_(3)C at the tempering temperature of 350℃,resulting in the remarkable deterioration in strength,hardness,and *** carbides formed at a tempering temperature of 500℃ are beneficial to the enhancement of the elongation and toughness,but the strength decreases due to the matrix softening caused by the recovery of dislocation.

关键词： High strength steel Tempering Microstructure Carbide Mechanical property

来源：评论

学校读者我要写书评

暂无评论

Bi/Bi_(3)Se_(4) nanoparticles embedded in hollow porous carbon nanorod:High rate capability material for potassium-ion batteries

引用

Journal of Energy Chemistry 2023年第6期81卷 462-471,I0011页

作者： Zhisong Chen Yuanji Wu Xi Liu Yiwei Zhang Lichun Yang Hongyan Li Department of Materials Science and Engineering College of Chemistry and Materials ScienceJinan UniversityGuangzhou 510632GuangdongChina School of Materials Science and Engineering and Guangdong Provincial Key Laboratory of Advanced Energy Storage MaterialsSouth China University of TechnologyGuangzhou 510640GuangdongChina

Considering their superior theoretical capacity and low voltage plateau,bismuth(Bi)-based materials are being widely explored for application in potassium-ion batteries(PIBs).Unfortunately,pure Bi and Bibased compounds suffer from severe electrochemical polarization,agglomeration,and dramatic volume *** develop an advanced bismuth-based anode material with high reactivity and durability,in this work,the pyrolysis of Bi-based metal-organic frameworks and in-situ selenization techniques have been successfully used to produce a Bi-based composite with high capacity and unique structure,in which Bi/Bi_(3)Se_(4)nanoparticles are encapsulated in carbon nanorods(Bi/Bi_(3)Se_(4)@CNR).Applied as the anode material of PIBs,the Bi/Bi_(3)Se_(4)@CNR displays fast potassium storage capability with 307.5 m A h g^(-1)at 20 A g^(-1)and durable cycle performance of 2000 cycles at 5 A g^(-1).Notably,the Bi/Bi_(3)Se_(4)@CNR also showed long cycle stability over 1600 cycles when working in a full cell system with potassium vanadate as the cathode material,which further demonstrates its promising potential in the field of ***,the dual potassium storage mechanism of the Bi/Bi_(3)Se_(4)@CNR based on conversion and alloying reaction has also been revealed by in-situ X-ray diffraction.

关键词： Bi_(3)Se_(4) Potassium ion battery Hollow porous carbon rod Conversion-alloying mechanism Bi MOF

来源：评论

学校读者我要写书评

暂无评论

Optimizing strength-ductility in NiCoMn medium entropy alloys with atomic-scale rapid composition design

引用

材料科学技术（英文版） 2025年第12期215卷 71-85页

作者： Qing Gao Weibing Wang Junqiang Ren Wei Li Biao Sang Le Li Qi Wang Xuefeng Lu Jisen Qiao State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal Department of Materials Science and EngineeringLanzhou University of TechnologyLanzhou 730050China School of Materials Science and Engineering Shaanxi University of TechnologyHanzhong 723001China College of Energy Engineering Huanghuai UniversityZhumadian 463000China

The growing demand for material properties in challenging environments has led to a surge of interest in rapid composition *** the great potential composition space,the field of high/medium entropy alloys(H/MEAs)still lacks effective atomic-scale composition design and screening schemes,which hin-ders the accurate prediction of desired composition and *** study proposes a novel approach for rapidly designing the composition of materials with the aim of overcoming the trade-off between strength and ductility in metal matrix *** effect of chemical composition on stacking fault energy(SFE),shear modulus,and phase stability was investigated through the use of molecular dynam-ics(MD)and thermodynamic calculation *** alloy's low SFE,highest shear modulus,and sta-ble face-centered cubic(FCC)phase have been identified as three standard physical quantities for rapid screening to characterize the deformation mechanism,ultimate tensile strength,phase stability,and duc-tility of the *** calculation results indicate that the optimal composition space is expected to fall within the ranges of 17％-34％Ni,33％-50％Co,and 25％-33％*** comparison of stress-strain curves for various predicted components using simulated and experimental results serves to reinforce the efficacy of the *** indicates that the screening criteria offer a necessary design concept,deviat-ing from traditional strategies and providing crucial guidance for the rapid development and application of MEAs.

关键词： Medium entropy alloys Molecular dynamics Stacking fault energy Shear modulus Ultimate tensile strength Ductility

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：