检索结果-南通市图书馆

Covalent Organic Framework with 3D Ordered Channel and Multi-Functional Groups Endows Zn Anode with Superior Stability

引用

Nano-Micro Letters 2024年第4期16卷 350-363页

作者： Bin Li Pengchao Ruan Xieyu Xu Zhangxing He Xinyan Zhu Liang Pan Ziyu Peng Yangyang Liu Peng Zhou Bingan Lu Lei Dai Jiang Zhou School of Chemical Engineering North China University of Science and TechnologyTangshan 063009People’s Republic of China School of materials Science and Engineering Central South UniversityChangsha 410083People’s Republic of China State key laboratory for Mechanical Behavior of materials Xi’an Jiaotong UniversityXi’an 710049People’s Republic of China hunan provincial key defense laboratory of high temperature wear‑resisting materials and preparation technology Hunan University of Science and TechnologyXiangtan 411201People’s Republic of China School of Physics and Electronics Hunan UniversityChangsha 410082People’s Republic of China

Achieving a highly robust zinc(Zn)metal anode is extremely important for improving the performance of aqueous Zn-ion batteries(AZIBs)for advancing“carbon neutrality”society,which is hampered by the uncontrollable growth of Zn dendrite and severe side reactions including hydrogen evolution reaction,corrosion,and passivation,***,an interlayer containing fluorinated zincophilic covalent organic framework with sulfonic acid groups(COF-S-F)is developed on Zn metal(Zn@COF-S-F)as the artificial solid electrolyte interface(SEI).Sulfonic acid group(-SO_(3)H)in COF-S-F can effectively ameliorate the desolvation process of hydrated Zn ions,and the three-dimensional channel with fluoride group(-F)can provide interconnected channels for the favorable transport of Zn ions with ion-confinement effects,endowing Zn@COF-S-F with dendrite-free morphology and suppressed side ***,Zn@COF-S-F symmetric cell can stably cycle for 1,000 h with low average hysteresis voltage(50.5 m V)at the current density of 1.5 m A cm^(-2).Zn@COF-S-F|Mn O_(2)cell delivers the discharge specific capacity of 206.8 m Ah g^(-1)at the current density of 1.2 A g^(-1)after 800 cycles with high-capacity retention(87.9%).Enlightening,building artificial SEI on metallic Zn surface with targeted design has been proved as the effective strategy to foster the practical application of high-performance AZIBs.

关键词： Aqueous Zn ion batteries Covalent organic framework Interfacial modification Zn ion flux regulation Desolvation effect

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A new model for thermal conductivity of“continuous matrix/dispersed and separated 3D-particles”type composite materials and its application to WC-M(M=Co,Ag)systems

引用

Journal of materials Science & technology 2022年第2期97卷 123-133页

作者： Shiyi Wen Yong Du Jing Tan Yuling Liu Peng Zhou Jianzhan Long George Kaptay State key laboratory of Powder Metallurgy Central South UniversityChangsha 410083China hunan provincial key defense laboratory of high temperature wear-resisting materials and preparation technology Hunan University of Science and TechnologyXiangtan 411201China State key laboratory of Cemented Carbide Zhuzhou 412000China University of Miskolc MiskolcEgyetemváros3515Hungary

In the present work a new thermal conductivity model is developed for two-phase composite materials,which are consisted of a continuous matrix and dispersed 3 D-particles separated from each other by the matrix as a function of grain size and volume ratio of the dispersed particles at different *** model is applied to reproduce experimental thermal conductivity values of cemented carbide systems WC-Co and *** agreement was found between measured thermal conductivity data originating from both this work and recent literature and the calculated ones only using semi-empirical parameters for the interfacial thermal resistance(ITR)values at WC/Co,WC/Ag and WC/WC interfaces as a function of ***,the temperature and grain size dependence of the thermal conductivity for WC is established for the first *** model works well for the case when the matrix(Ag)has a higher thermal conductivity compared to that of the WC particles and also for the case when the matrix(Co)has a lower thermal conductivity compared to that of the WC *** new model forms a physically sound basis for further development/materials design of cemented carbides and particlereinforced composite materials.

关键词： Thermal conductivity WC-Co WC-Ag Modeling Cemented carbides Composite materials

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Metal-Organic Frameworks Functionalized Separators for Robust Aqueous Zinc-Ion Batteries

引用

Nano-Micro Letters 2022年第12期14卷 521-534页

作者： Yang Song Pengchao Ruan Caiwang Mao Yuxin Chang Ling Wang Lei Dai Peng Zhou Bingan Lu Jiang Zhou Zhangxing He School of Chemical Engineering North China University of Science and TechnologyTangshan 063009People’s Republic of China School of materials Science and Engineering Hunan Provincial Key Laboratory of Electronic Packaging and Advanced Functional MaterialsCentral South UniversityChangsha 410083People’s Republic of China hunan provincial key defense laboratory of high temperature wear-resisting materials and preparation technology Hunan University of Science and TechnologyXiangtan 411201People’s Republic of China School of Physics and Electronics Hunan UniversityChangsha 410082People’s Republic of China

Aqueous zinc-ion batteries(AZIBs)are one of the promising energy storage systems,which consist of electrode materials,electrolyte,and *** first two have been significantly received ample development,while the prominent role of the separators in manipulating the stability of the electrode has not attracted sufficient *** this work,a separator(UiO-66-GF)modified by Zr-based metal organic framework for robust AZIBs is ***-66-GF effectively enhances the transport ability of charge carriers and demonstrates preferential orientation of(002)crystal plane,which is favorable for corrosion resistance and dendrite-free zinc ***,Zn|UiO-66-GF-2.2|Zn cells exhibit highly reversible plating/stripping behavior with long cycle life over 1650 h at 2.0 mA cm^(−2),and Zn|UiO-66-GF-2.2|MnO_(2) cells show excellent long-term stability with capacity retention of 85%after 1000 *** reasonable design and application of multifunctional metal organic frameworks modified separators provide useful guidance for constructing durable AZIBs.

关键词： Aqueous zinc-ion batteries Separators Metal-organic frameworks Ion transport Dendrite-free

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Controlled preparation and self-assembly of NdVO_4 nanocrystals

引用

Journal of Rare Earths 2018年第2期36卷 179-183页

作者： Li Tian Yan Li Huifeng Wang Shanmin Chen Jinjing Wang Zhen Guo Qiang Liu Qi Luo Yingjie Li Fafa Wu School of materials Science and Engineering Hunan Provincial Key Defense Laboratory of High Temperature Wear-resisting Materials and Preparation Technology Hunan University of Science and Technology State key laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of Sciences

Phase-pure t-NdVO_4 nanocrystals with different shapes have been synthesized by facile and repeatable hydrothermal methods. The as-synthesized t-NdVO_4 nanoparticles were characterized by various techniques of X-ray diffraction（XRD）. scanning electron microscope（SEM） and transmission electron microscope（TEM）. The growth process and assembly behavior of t-NdVO_4 nanorod arrays were investigated. The results show that the morphology of t-NdV04 nanocrystals is greatly related to the pH value of precursor solution and that strong basic solution is not in favor of the formation of t-NdVO_4 nanoparticles. Due to the strong adhesive action and stabilization of OH^-ions to some crystal faces of NdVO_4, neodymium vanadate crystallite grows into oriented short nanorods and then into nanorod arrays. The shape, crystalline and dimension of NdVO_4 nanocrystals can be effectively governed in our work.

关键词： Inorganic compounds Nanostructures Chemical synthesis X-ray diffraction Rare earths

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hetero Nucleus Growth Stabilizing Zinc Anode for high‑Biosecurity Zinc‑Ion Batteries

引用

Nano-Micro Letters 2023年第12期15卷 349-360页

作者： Jingjing Li Zhexuan Liu Shaohua Han Peng Zhou Bingan Lu Jianda Zhou Zhiyuan Zeng Zhizhao Chen Jiang Zhou Department of Plastic Surgery and National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangsha 410008People’s Republic of China School of materials Science and Engineering Hunan Provincial Key Laboratory of Electronic Packaging and Advanced Functional MaterialsCentral South UniversityChangsha 410083People’s Republic of China hunan provincial key defense laboratory of high temperature wear‑resisting materials and preparation technology Hunan University of Science and TechnologyXiangtan 411201People’s Republic of China School of Physics and Electronics Hunan UniversityChangsha 410082People’s Republic of China Department of Plastic Surgery The Third Xiangya HospitalCentral South UniversityChangsha 410013People’s Republic of China Department of materials Science and Engineering City University of Hong Kong83 Tat Chee AvenueKowloon 999077Hong KongPeople’s Republic of China

Biocompatible devices are widely employed in modernized lives and medical fields in the forms of wearable and implantable devices,raising higher requirements on the battery biocompatibility,high safety,low cost,and excellent electrochemical performance,which become the evaluation criteria toward developing feasible biocompatible ***,through conducting the battery implantation tests and leakage scene simulations on New Zealand rabbits,zinc sulfate electrolyte is proved to exhibit higher biosecurity and turns out to be one of the ideal zinc salts for biocompatible zinc-ion batteries(ZIBs).Furthermore,in order to mitigate the notorious dendrite growth and hydrogen evolution in mildly acidic electrolyte as well as improve their operating stability,Sn hetero nucleus is introduced to stabilize the zinc anode,which not only facilitates the planar zinc deposition,but also contributes to higher hydrogen evolution ***,a long lifetime of 1500 h for the symmetrical cell,the specific capacity of 150 mAh g^(-1)under 0.5 A g^(-1)for the Zn-MnO_(2)battery and 212 mAh g^(-1)under 5 A g^(-1)for the Zn—NH4V4O10 battery are *** work may provide unique perspectives on biocompatible ZIBs toward the biosecurity of their cell components.

关键词： Aqueous zinc-ion batteries Biocompatible devices Operating stability Zinc anode Zinc salts electrolyte

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Experimental investigation and thermodynamic modeling of the U-Nb system

引用

Journal of materials Science & technology 2021年第22期81卷 229-235页

作者： Chuan Mo Wenlin Mo Peng Zhou BaiXue Bian Yong Du Tao Fa Pengguo Zhang Ruiwen Li Yanzhi Zhang Changsheng Zhang Yuanhua Xia Xiaolin Wang Institute of materials China Academy of Engineering PhysicsJiangyou 621907China hunan provincial key defense laboratory of high temperature wear-resisting materials and preparation technology Hunan University of Science and TechnologyXiangtan 411201China State key laboratory of Powder Metallurgy Central South UniversityChangsha 410083China key laboratory for Neutron Physics of Chinese Academy of Engineering Physics Institute of Nuclear Physics and ChemistryMianyang 621999China China Academy of Engineering Physics Mianyang 621900China

The phase equilibria and thermodynamic properties of the U-Nb system were investigated through experiments and thermodynamic *** the experiments,a series of samples with different content of Nb were prepared by arc *** Nb content covers the entire composition range of the U-Nb binary *** solidification,the samples were annealed and then analyzed by X-ray diffraction,scanning electron microscopy,energy dispersive X-ray spectroscopy,differential scanning calorimeter and neutron *** equilibrium phases,including γ1(U-rich bcc),αU,and γ2(U-depleted bcc),were determined in detail from the experimental *** occurrence of the invariant reaction γ1→αU+γ2 was confirmed,and the reaction temperature and composition were accurately ***,the experimental findings clarify the dispute between the Dwight and Terekhov theories regarding the phase region(i.e.,whether the phase region is αU+γ1 or βU+γ2).Furthermore,the U-Nb phase diagram was reassessed by incorporating the present experimental data and previously published reliable experimental data from the literature.A set of self-consistent thermodynamic parameters were developed using CALPHAD(Calculation of phase diagrams),and the calculations reasonably agree with the experimental observations.

关键词： U-Nb alloy Monotectoid reaction Phase diagram Thermodynamic Modeling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于生命周期评价的镁合金汽车轮毂环境影响评价（英文）

引用

Journal of Central South University 2018年第8期25卷 1870-1878页

作者：易秋平唐昌平 Institute for hunan Innovation & Development Research Hunan University of Science and Technology key defense laboratory of high temperature wear-resisting materials and preparation technology of hunan Province Hunan University of Science and Technology

为了探明镁合金汽车轮毂替代铝合金汽车轮毂对环境的影响,本文基于生命周期评价理论研究了2种轮毂生产及使用过程中的资源、能源消耗及污染物排放情况。结果表明:采用镁合金轮毂替代铝合金轮毂,可有效降低对环境的不利影响,与铝合金轮... 详细信息

为了探明镁合金汽车轮毂替代铝合金汽车轮毂对环境的影响,本文基于生命周期评价理论研究了2种轮毂生产及使用过程中的资源、能源消耗及污染物排放情况。结果表明:采用镁合金轮毂替代铝合金轮毂,可有效降低对环境的不利影响,与铝合金轮毂相比,镁合金轮毂在整个生命周期中可使温室效应降低39.6%,对人体健康的损害程度降低24.0%;CO_2是两种轮毂生命周期中的主要污染物,且贯穿于轮毂的生产及使用过程,颗粒物则主要产生于轮毂的制备阶段;与铝合金轮毂相比,镁合金轮毂的绿色效应主要归功于减重所带来的油耗降低。

关键词： LCA理论镁合金铝合金轮毂环境影响

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

中空结构Cu_(0.3)Co_(2.7)O_(4)微球的无模板水热合成和气敏性

引用

Journal of Central South University 2021年第7期28卷 1946-1954页

作者：田俐刘强吴杰灵易益涛 School of materials Science and Engineering Hunan University of Science and TechnologyXiangtan 411201China hunan provincial key laboratory of Controllable preparation and Functional Application of Fine Polymers Hunan University of Science and TechnologyXiangtan 411201China hunan provincial key Lab of Advanced materials for New Energy Storage and Conversion Hunan University of Science and TechnologyXiangtan 411201China hunan provincial key defense laboratory of high temperature wear-resisting materials and preparation technology Hunan University of Science and TechnologyXiangtan 411201China School of Chemistry and Chemical Engineering Hainan Normal UniversityHaikou 571158China

以硫酸铜、乙酸钴和氨为原料首次通过简单的无模板水热法可控合成了空心结构的Cu_(0.3)Co_(2.7)O_(4)微球。通过粉末X射线衍射、能量色散X射线分析、选区电子衍射、高分辨率透射电子显微镜、扫描电子显微镜和BET测量来表征产物。研究结... 详细信息

以硫酸铜、乙酸钴和氨为原料首次通过简单的无模板水热法可控合成了空心结构的Cu_(0.3)Co_(2.7)O_(4)微球。通过粉末X射线衍射、能量色散X射线分析、选区电子衍射、高分辨率透射电子显微镜、扫描电子显微镜和BET测量来表征产物。研究结果表明,空心Cu_(0.3)Co_(2.7)O_(4)微球由直径约20 nm的单晶纳米立方体组成。中空Cu_(0.3)Co_(2.7)O_(4)微球的形成是基于固溶-固相过程中的Ostwald熟化作用。Cu_(0.3)Co_(2.7)O_(4)微球是中孔的,包含3.3和5.9 nm两种孔径。所制备的Cu_(0.3)Co_(2.7)O_(4)传感器在190℃下对50×10^(−6) C_(2)H_(5)OH具有最佳的气体响应。

关键词： Cu_(0.3)Co_(2.7)O_(4)氧化物微球无机化合物纳米结构无模板水热法

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Study on the Cutting temperature of the Textured Tool by 3D FEA Simulation

引用

Mechanical Engineering Science 2019年第2期1卷 25-32页

作者： Siwen TANG Pengfei LIU Rui WANG Qiulin NIU Guoqing YANG Wenhui LIU Qian LIU hunan provincial key laboratory of Health Maintenance for Mechanical Equipment Hunan University of Science and TechnologyXiangtanChina hunan provincial key laboratory of high Efficiency and Precision Machining of Difficult-to-Cut Material Hunan University of Science and TechnologyXiangtanChina hunan provincial key defense laboratory of high temperature wear resisting materials and preparation technology Hunan University of Science and TechnologyXiangtanChina Engineering Research Center of Advanced Mining Equipment Ministry of EducationHunan University of Science and TechnologyXiangtanChina

temperature plays an important role in the life of cutting ***,it is sometimes difficult to observe instantaneously because of limited data acquisition,especially for the textured *** this paper,the performance of microgroove textured cutting tools for three-dimensional(3D)oblique dry turning of AISI 1045 steel was studied by finite element *** effects of width,depth and spacing of strip micro-texture on cutting temperature and the effect of cutting speed on cutting temperature of strip microtexture tool were *** results show that the maximum temperature of the tool and the tip temperature first increase and then decrease with the increase of micro-texture *** the micro-texture depth increases,the maximum temperature and the tool tip temperature decrease first and then *** highest temperature and tip temperature of the tool gradually increase with the increase of micro-texture *** highest temperature and tip temperature of the tool increase with the increase of cutting speed,feed speed and cutting *** addition,the effective mechanism of micro-texture parameter for the temperature was *** provides profound guidance for optimizing the microstructure parameters and cutting process of cutting tools according to cutting temperature in this *** also provides an effective and practical method for the design,innovation and development of microtextured tools.

关键词： Micro-textured cutting tool FEM modeling Cutting temperature Cutting parameters

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：