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Emerging Carbon Nanotube-Based Nanomaterials for Stable and Dendrite-Free Alkali Metal Anodes:Challenges,Strategies,and Perspectives

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Energy & Environmental Materials 2023年第6期6卷 50-72页

作者： Zhongxiu Liu Yong Liu Yingjie Miao Guilong Liu Renhong Yu kunming pan Guangxin Wang Xinchang pang Jianmin Ma Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-Ferrous Metal New Materials and Advanced Processing Technology Henan Key Laboratory of Non-Ferrous Materials Science&Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China Longmen Laboratory Luoyang 471023China Key Laboratory of Function-Oriented Porous Materials of Henan Province College of Chemistry and Chemical EngineeringLuoyang Normal UniversityLuoyang 471934China School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China

Alkali metals(Li,Na,and K)are promising candidates for high-performance rechargeable alkali metal battery anodes due to their high theoretical specific capacity and low electrochemical ***,the actual application of alkali metal anodes is impeded by the challenges of alkali metals,including their high chemical reactivity,uncontrolled dendrite growth,unstable solid electrolyte interphase,and infinite volume expansion during cycling *** carbon nanotube-based nanomaterials in alkali metal anodesis an effective solution to these *** nanomaterials have attracted widespread attention owing to their unique properties,such as their high specific surface area,superior electronic conductivity,and excellent mechanical *** the rapidly growing research enthusiasm for this topic in the last several years,we review recent progress on the application of carbon nanotube-based nanomaterials in stable and dendrite-free alkali metal *** merits and issues of alkali metal anodes,as well as their stabilizing strategies are ***,the relationships among methods of synthesis,nano-or microstructures,and electrochemical properties of carbon nanotube-based alkali metal anodes are systematically *** addition,advanced characterization technologies on the reaction mechanism of carbon nanotube-based nanomaterials in alkali metal anodes are also ***,the challenges and prospects for future study and applications of carbon nanotube-based AMAs in high-performance alkali metal batteries are discussed.

关键词： alkali metal anodes carbon nanotube dendrite free electrochemical performance nanomaterials

Oxidation behavior of Mo-Si-B alloys at medium-to-high temperatures

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Journal of Materials Science & Technology 2021年第1期60卷 113-127页

作者： kunming pan Yanping Yang Shizhong Wei Honghui Wu Zhili Dong Yuan Wu Shuize Wang Laiqi Zhang Junping Lin Xinping Mao Henan Key Laboratory of High-temperature Structural and Functional Materials National Joint Engineering Research Center for Abrasion Control and Molding of Metal MaterialsHenan University of Science and TechnologyLuoyang 471003China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China School of Materials Science and Engineering Nanyang Technological UniversitySingapore State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China

Continuous exploration of high-temperature structural materials is being driven by the needs of gasturbine engines capable of withstanding the high-temperature *** low melting points of currently applied superalloys restrain the further improvement of service tempe *** higher melting tempe ratures above 2000℃,Mo-Si-B alloys are regarded as a new generation of ultrahightemperature structural ***,oxidation is a concern for the industrial application of Mo-Si-B ***,an in-depth understanding of the oxidation mechanisms may contribute to solving this issue,whereas relevant reviews about their recent advances are *** the current work,a comprehensively systematic review about the oxidation behaviors of Mo-Si-B alloys is described for this purpose.

关键词： Mo-Si-B alloys Oxidation resistance Alloying and modification Enhancement

Shining light on transition metal tungstate-based nanomaterials for electrochemical applications:Structures,progress,and perspectives

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Nano Research 2022年第8期15卷 6924-6960页

作者： Kaijia Feng Zhefei Sun Yong Liu Feng Tao Junqing Ma Han Qian Renhong Yu kunming pan Guangxin Wang Shizhong Wei Qiaobao Zhang National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials Henan Key Laboratory of Non–Ferrous Materials Science&Processing TechnologySchool of Materials Science and EngineeringHenan University of Science and TechnologyLuoyang 471023China Provincial and Ministerial Co–construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology Henan Key Laboratory of High-temperature Structural and Functional MaterialsHenan University of Science and TechnologyLuoyang 471023China Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005China Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials Xiamen UniversityXiamen 361005China

Transition metal tungstate-based nanomaterials have become one of the research hotspots in electrochemistry due to their abundant natural resources,low costs,and environmental *** studies have demonstrated their significant potentials for electrochemical applications,such as supercapacitors,Li-ion batteries,Na-ion batteries,electrochemical sensing,and *** the rapidly growing research enthusiasm for this topic over the last several years,herein,a critical review of recent progress on the application of transition metal tungstates and their composites for electrochemical applications is *** relationships between synthetic methods,nano/micro structures and electrochemical properties are systematically ***,their promising prospects for future development are also *** is anticipated that this review will inspire ongoing interest in rational designing and fabricating novel transition metal tungstate-based nanomaterials for high-performance electrochemical devices.

关键词： transition metal tungstates supercapacitors lithium-ion batteries sodium-ion batteries electrochemical sensing electrocatalysis

Room Temperature Brittlement of T2 in the Mo-Si-B System

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Room Temperature Brittlement of T2 in the Mo-Si-B System

Machine Learning-Assisted Low-Dimensional Electrocatalysts Design for Hydrogen Evolution Reaction

中国材料大会2012

作者： kunming pan Laiqi Zhang Wei Du Junpin Lin State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing

ISBN: (纸本)9783037856086

Compression and three-point bending tests were conducted at room temperature （RM） on the Mo5SiB2 （T2） alloy, which was prepared by sparking plasma sintering （SPS）. It was found that almost no plastic deformation occured in the T2 alloy before failure but with a tremendous compressive strength of 2907 MPa. The fracture toughness determined from the single edge notch bend specimen is 3.34 MPa·m1/2 , similar to the value of 3.5 MPa·m1/2 in ɑ-Al2O3 . Once the cleavage crack initiated near the notch under continuous loads, it propagated on a certain plane （001） until the specimen completely fractured. In this work, the electronic structure was also calculated by the first-principles method, indicating that the contribution to RM brittleness is mainly caused by the covalent bonds which arrange alternately in the T2 phase.

关键词： T2 Intrinsic brittlement First-principles calculation Covalent bond

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Nano-Micro Letters 2023年第12期15卷 161-187页

作者： Jin Li Naiteng Wu Jian Zhang Hong‑Hui Wu kunming pan Yingxue Wang Guilong Liu Xianming Liu Zhenpeng Yao Qiaobao Zhang College of Chemistry and Chemical Engineering and Henan Key Laboratory of Function‑Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934People’s Republic of China New Energy Technology Engineering Lab of Jiangsu Province College of ScienceNanjing University of Posts and Telecommunications(NUPT)Nanjing 210023People’s Republic of China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083People’s Republic of China Department of Chemistry University of Nebraska-LincolnLincolnNE 8588USA Henan Key Laboratory of High‑Temperature Structural and Functional Materials National Joint Engineering Research Center for Abrasion Control and Molding of Metal MaterialsHenan University of Science and TechnologyLuoyang 471003People’s Republic of China National Engineering Laboratory for Risk Perception and Prevention Beijing 100041People’s Republic of China Center of Hydrogen Science Shanghai Jiao Tong UniversityShanghai 200000People’s Republic of China State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200000People’s Republic of China State Key Laboratory of Physical Chemistry of Solid Surfaces College of MaterialsXiamen UniversityXiamen 361005People’s Republic of China

Efficient electrocatalysts are crucial for hydrogen generation from electrolyzing ***,the conventional"trial and error"method for producing advanced electrocatalysts is not only cost-ineffective but also time-consuming and ***,the advancement of machine learning brings new opportunities for electrocatalysts discovery and *** analyzing experimental and theoretical data,machine learning can effectively predict their hydrogen evolution reaction(HER)*** review summarizes recent developments in machine learning for low-dimensional electrocatalysts,including zero-dimension nanoparticles and nanoclusters,one-dimensional nanotubes and nanowires,two-dimensional nanosheets,as well as other *** particular,the effects of descriptors and algorithms on screening low-dimensional electrocatalysts and investigating their HER performance are ***,the future directions and perspectives for machine learning in electrocatalysis are discussed,emphasizing the potential for machine learning to accelerate electrocatalyst discovery,optimize their performance,and provide new insights into electrocatalytic ***,this work offers an in-depth understanding of the current state of machine learning in electrocatalysis and its potential for future research.

关键词： Machine learning Hydrogen evolution reaction Low-dimensional electrocatalyst Descriptor Algorithm

Mo-Si-B三元系中T2相合金制备及其室温力学性能

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稀有金属材料与工程 2013年第5期42卷 1080-1084页

作者：潘昆明张来启王珏杜伟林均品北京科技大学新金属材料国家重点实验室北京100083

通过放电等离子烧结(SPS)制备T2(Mo5SiB2)相合金,并采用SEM、XRD及压痕、压缩和三点弯曲等实验对合金的微观组织和室温力学性能进行表征。结果表明:SPS法以独特的等离子活化烧结方式制备出纯度高、致密且晶粒细小的T2相合金。该合金在... 详细信息

通过放电等离子烧结(SPS)制备T2(Mo5SiB2)相合金,并采用SEM、XRD及压痕、压缩和三点弯曲等实验对合金的微观组织和室温力学性能进行表征。结果表明:SPS法以独特的等离子活化烧结方式制备出纯度高、致密且晶粒细小的T2相合金。该合金在室温压缩下几乎没有塑性变形,抗压强度为2907MPa;维氏硬度为17.86GPa,压痕法测得的断裂韧性为3.23MPa·m1/2,与三点弯曲法测得的3.34MPa·m1/2接近,沿{001}面发生解理断裂。共价键交替排列,是T2相室温脆性、高强度、高硬度的根本原因。

关键词： T2 放电等离子烧结微观组织室温力学性能共价键

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表面缺立方相梯度硬质合金研究进展

稀有金属 2024年第10期48卷 1459-1474页

作者：胡灿陈冲孙建清潘昆明魏世忠王长记河南科技大学材料科学与工程学院河南洛阳471000 龙门实验室智能制造基础研究中心河南洛阳471000 河南科技大学金属材料磨损控制与成型技术国家地方联合工程研究中心河南洛阳471003

表面确立方相梯度硬质合金是金属加工中最常用的涂层刀具材料之一,在精密加工中发挥着重要作用。梯度硬质合金基体是保证刀具稳定切削和良好服役寿命的关键因素之一。当其与Ti C,Ti N,Ti(C,N)和Al_(2)O_(3)等涂层结合使用时,由于涂层和... 详细信息

表面确立方相梯度硬质合金是金属加工中最常用的涂层刀具材料之一,在精密加工中发挥着重要作用。梯度硬质合金基体是保证刀具稳定切削和良好服役寿命的关键因素之一。当其与Ti C,Ti N,Ti(C,N)和Al_(2)O_(3)等涂层结合使用时,由于涂层和基体之间热膨胀系数的差异,在二者结合过程中产生的热应力容易导致出现裂纹,从而降低刀具的切削性能和使用寿命。梯度硬质合金中的富粘结相表层可以提高合金表面的韧性,减少裂纹的产生,阻止裂纹的扩展。简单介绍了表面缺立方相梯度硬质合金梯度层的形成机制和常用的制备方法,总结了相图计算方法在梯度层组织和性能模拟中的应用,并从热力学数据库、动力学数据库和表征有效扩散系数的迷宫因子这3个方面论述了梯度层模拟技术的发展,阐述了梯度硬质合金原料粉末粒度、烧结工艺和合金组分(包括氮源、粘结相和二次碳化物)等对梯度层形成和合金性能等方面的影响,并对高性能涂层梯度硬质合金的未来研究方向进行了展望。

关键词：梯度硬质合金缺立方相形成机制制备方法相图计算

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钨铜合金电导率模型及理论值计算（英文）

稀有金属材料与工程 2019年第1期48卷 33-38页

作者：王喜然魏世忠潘昆明徐流杰李秀青单康宁河南科技大学河南洛阳471023 河南省高温结构与功能材料重点实验室河南洛阳471003

钨铜合金由于其具有良好的耐电弧烧蚀性、抗熔焊性、高导热导电性等特点,已被应用于冶金、材料、电子、军工等领域。电导率是重要的材料性能指标之一,一直备受大家关注。针对不同成分钨铜合金采用现有的电导率模型进行了归纳总结,并对... 详细信息

钨铜合金由于其具有良好的耐电弧烧蚀性、抗熔焊性、高导热导电性等特点,已被应用于冶金、材料、电子、军工等领域。电导率是重要的材料性能指标之一,一直备受大家关注。针对不同成分钨铜合金采用现有的电导率模型进行了归纳总结,并对不同模型的特点和应用进行了讨论,推导出不同模型下的钨铜合金理论电导率;并将合适的模型计算值与实验结果进行了比较。结果表明,低或高铜含量的W-Cu合金的实验电导率与理论值基本符合。提高铜含量和减少空孔隙可提高W-Cu合金的电导率。本研究可为钨铜合金的成分和电导性能设计提供理论依据。

关键词：钨铜合金电导率理论模型

基于相场模拟的Inconel 718合金定向凝固CET转变研究

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特种铸造及有色合金 2024年第3期44卷 323-327页

作者：董高高王凯阳吕少杰潘昆明国能孟津热电有限公司洛阳471112 河南科技大学河南省高温结构与功能材料重点实验室洛阳471112 北京材料基因工程高精尖中心北京301811

基于多相场模型对Inconel 718合金定向凝固中的柱状晶向等轴晶转变(CET)过程进行了数值模拟,探究了不同温度梯度下CET的凝固组织,研究了等轴晶、柱状晶和混合晶在凝固过程中的枝晶演化规律,并统计了合金体系中Nb和Cr元素沿高度方向的浓... 详细信息

基于多相场模型对Inconel 718合金定向凝固中的柱状晶向等轴晶转变(CET)过程进行了数值模拟,探究了不同温度梯度下CET的凝固组织,研究了等轴晶、柱状晶和混合晶在凝固过程中的枝晶演化规律,并统计了合金体系中Nb和Cr元素沿高度方向的浓度变化。结果表明,温度梯度从400 K/cm减小到10 K/cm,Inconel 718合金的凝固模式从柱状晶组织转变为等轴晶组织。同时,在凝固过程中,Nb在液相中偏聚,而Cr在固相中偏聚。

关键词：定向凝固 Inconel 718合金相场法微观组织演化