检索结果-南通市图书馆

Polyzwitterionic cross-linked double network hydrogel electrolyte enabling high-stable zn anode

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第6期17卷 5278-5287页

作者： Mengyu Shi Junlong Zhang Guochuan Tang Ben Wang Sen Wang Xiaoxian Ren Guojie Li Weihua Chen Chuntai Liu Changyu Shen State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China College of Chemistry and Green Catalysis Center Zhengzhou UniversityZhengzhou 450001China Research Institute of Interdisciplinary Science and School of Materials Science and Engineering Dongguan University of TechnologyDongguan 523808China

zn metal anode suffers from dendrite issues and passive byproducts,which severely plagues the practical application of aqueous zn metal ***,a polyzwitterionic cross-linked double network hydrogel electrolyte composed of physical crosslinking(hyaluronic acid)and chemical crosslinking(synthetic zwitterionic monomer copolymerized with acrylamide)is introduced to overcome these *** the one hand,highly hydrophilic physical network provides an energy dissipation channel to buffer stress and builds a H_(2)O-poor interface to avoid side *** the other hand,the charged groups(sulfonic and imidazolyl)in chemical crosslinking structure build anion/cation transport channels to boost ions’kinetics migration and regulate the typical solvent structure[zn(H_(2)O)_(6)]^(2+)to R-SO_(3)^(−)[zn(H_(2)O)_(4)]^(2+),with uniform electric field distribution and significant resistance to dendrites and parasitic *** on the above functions,the symmetric zinc cell exhibits superior cycle stability for more than 420 h at a high current density of 5 mA·cm^(−2),and zn||MnO_(2)full cell has a reversible specific capacity of 150 mAh·g^(−1)after 1000 cycles at 2 C with this hydrogel ***,the pouch cell delivers impressive flexibility and cyclability for energy-storage applications.

关键词： zn anode dendrites parasitic reactions polyzwitterion double network hydrogel electrolyte

The chemical environment and structural ordering in liquid Mg-Y-zn system:An ab-initio molecular dynamics investigation of melt for the formation mechanism of LPSO structure

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

Journal of Magnesium and Alloys 2024年第2期12卷 815-824页

作者： Tangpeng Ma Jin Wang Kaiming Cheng Chengwei Zhan Jixue Zhou Jingyu Qin Guochen Zhao Xinfang Zhang Shandong Provincial Key Laboratory of High Strength Lightweight Metallic Materials Advanced Materials InstituteQilu University of Technology(Shandong Academy of Sciences)Jinan 250014China Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationShandong UniversityJinan 250061China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

In an effort to clarify the formation mechanism of LPSO structure in Mg-Y-zn alloy,the chemical environment and structural ordering in liquid Mg-rich Mg-Y-zn system are investigated with the aid of ab-initio molecular dynamics *** liquid Mg-rich Mg-Y alloys,the strong Mg-Y interaction is determined,which promotes the formation of fivefold symmetric local *** Mg-zn alloys,the weak Mg-zn interaction results in the fivefold symmetry weakening in the liquid *** to the coexistence of Y and zn,the strong attractive interaction is introduced in liquid Mg-Y-zn ternary alloy,and contributes to the clustering of Mg,Y,zn launched from *** is more,the distribution of local structures becomes closer to that in pure Mg compared with that in binary Mg-Y and Mg-zn *** results should relate to the origins of the Y/zn segregation zone and close-packed stacking mode in LPSO structure,which provides a new insight into the formation mechanism of LPSO structure at atomic level.

关键词： Mg-Y-zn Chemical environment Structural ordering ab-initio molecular dynamics

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

在线全文

学校读者我要写书评

暂无评论

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

Studies on the structure and catalytic performance of Cu-zn-Al catalyst prepared by liquid-phase preparation technology under different heat treatment atmosphere

在线全文

学校读者我要写书评

暂无评论

Journal of Natural Gas Chemistry 2010年第6期19卷 611-616页

作者： Zhihua Gao Wei Huang Lihua Yin Kechang Xie Key Laboratory of Coal Science and technology of Ministry of Education and Shanxi Province Taiyuan University of Technology Taiyuan 030024 Shanxi China

Cu-zn-Al slurry catalysts were prepared using a complete liquid-phase preparation technology under different heat treatment *** catalysts were characterized using X-ray diffraction,X-ray photoelectron spectroscope,and N2 *** application in the single-step synthesis of dimethyl ether from syngas was also *** results indicate that the type of heat treatment atmosphere has an influence on the Cu species and the Cu0/Cu＋ ratio on the catalyst ***,the final Cu/zn ratio on the catalyst surface is mainly dependent on the composition and reaction environment of the catalyst and less on the type of heat treatment *** prepared catalysts can suppress sintering of active sites at high temperatures,and the type of heat treatment atmosphere mainly affects the capability of the catalyst for methanol *** catalysts perform best using N2 as the heat treatment atmosphere.

关键词： liquid-phase preparation technology slurry reactor dimethyl ether syngas heat treatment atmosphere

Analysis of destructive effect of zn on carbon brick and way of zn into carbon brick

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research(International) 2024年第6期31卷 1344-1354页

作者： Peng-bo Liu Shu-sen Cheng Yu-qing Xue Xiao-man Cheng Zhao Liu University of Science and technology Beijing Beijing 100083China Ministry of Ironmaking Shangdong Taishan Steel Group Co.Ltd.Taian 271000ShandongChina

The service life of a blast furnace depends largely on the degree of damage to the carbon brick in the *** brick and ramming material in the hearth of a 1780 m3 blast furnace after shutdown were sampled and *** was found that the substances in the cracks of the carbon brick near and above the taphole were znO and zn_(2)SiO_(4),whereas the substances in the cracks of the carbon brick below the taphole were *** reaction of zn with CO,SiO_(2),and Fes generates znO,zn_(2)SiO_(4),and znS,resulting in volume expansion,which is an important reason for the cracking of carbon ***,several obvious zn vapor flow channels were found in the ramming material,through which zn vapor could enter the carbon brick,causing damage to the carbon *** the compactness of the ramming material is beneficial to preventing zn vapor from entering the carbon brick through the voids in the ramming material,reducing the destructive effect of zn on the carbon brick and further extending the service life of the blast furnace.

关键词： zn Blast furnace Carbon brick Ramming material Crack

The etching strategy of zinc anode to enable high performance zinc-ion batteries

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

Journal of Energy Chemistry 2024年第1期88卷 125-143,I0004页

作者： Xueqing Fu Gaopeng Li Xinlu Wang Jinxian Wang Wensheng Yu Xiangting Dong Dongtao Liu School of Chemistry and Environmental Engineering Changchun University of Science and TechnologyChangchun 130022JilinChina Department of Chemistry Northeast Normal UniversityChangchun 130024JilinChina

Zinc-ion batteries(ZIBs)are considered to be one of the most promising candidates to replace lithium-ion batteries(LIBs)due to the high theoretical capacity,low cost and intrinsic ***,zinc dendrites,hydrogen evolution reaction,surface passivation and other side reactions will inevitably occur during the charging and discharging process of zn anode,which will seriously affect the cycle stability of the battery and hinder its practical *** etching strategy of zn anode has attracted wide attention because of its simple operation and broad commercial prospects,and the etched zn anode can effectively improve its electrochemical ***,there is no comprehensive review of the etching strategy of zn *** review first summarizes the challenges faced by zn anode,then puts forward the etching mechanisms and properties of acid,salt and other ***,based on the above discussion,the challenges and opportunities of zn anode etching strategy are proposed.

关键词： Zinc-ion batteries zn anode Etching 3D structures Dendrite-free

Tuning the band gap of the CIGS solar buffer layer Cd_(1-x)zn_(x)S(x=0—1) to achieve high efficiency

在线全文

学校读者我要写书评

暂无评论

Optoelectronics Letters 2024年第2期20卷 100-106页

作者： TAN Zhiyuan XUE Yuming DAI Hongli WANG Luoxin HU Xiaofeng BAI Xin Institute of New Energy Intelligence Equipment School of Integrated Circuit Science and EngineeringTianjin University of TechnologyTianjin 300384China

To evaluate the impact of zinc sulfate(znSO_(4)) concentration on the structural properties of the films,Cd_(1-x)zn_(x)S thin films were formed on glass substrates using chemical bath deposition(CBD) in this *** effect of znSO_(4) precursor concentration on the surface morphology,optical properties,and morphological structure of the Cd_(1-x)zn_(x)S films was *** study the impact of zinc doping content on the performance metrics of Cu(In_(1-x)Ga_(x))Se_(2)(CIGS)cells in the experimental group and to improve the buffer layer thickness,simulations were run using one-dimensional solar cell capacitance simulator(SCAPS-1D) software.

关键词： CIGS (x) layer

Comparative Study of the Effects of Nano znO and CuO on the Biodegradation,Biocompatibility,and Antibacterial Properties of Micro-arc Oxidation Coating of Magnesium Alloy

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2024年第2期37卷 242-254页

作者： Ying Shen Xianfeng Shan Iniobong P.Etim Muhammad Ali Siddiqui Yang Yang Zewen Shi Xuping Su Junxiu Chen Key Laboratory of Materials Surface Science and technology of Jiangsu Province Changzhou UniversityChangzhou213164China Department of Stomatology The Affiliated Xinhua Hospital of Dalian UniversityDalian116000China Department of Physics University of CalabarCalabar540242Nigeria Metallurgical Engineering Department NED University of Engineering and TechnologyUniversity RoadKarachi75270Pakistan Ningbo No.2 Hospital Ningbo315010China

This research systematically examined the degradation,antibacterial effects,and biocompatibility of micro-arc oxidation(MAO)coatings with nano CuO and znO on extruded Mg *** copper(Cu)and Zinc(zn)possess antibacterial *** findings demonstrated that adding znO will appreciably reduce the degradation rate of MAO-coating alloy due to the self-sealing micro ***+MAO coating exhibited excellent antibacterial performance,with an antibacterial rate of over 90%within 6 h co-cultured with Staphylococcus ***,the antibacterial rate of znO+MAO coating reached 90%after 12 h *** test using MG63 cell indicated that the incorporation of CuO and znO did not notably affect the cell viability rate of the ***,after 14 days of culture,the CuO+MAO and znO+MAO coated samples exhibited higher alkaline phosphatase(ALP)activity than the MAO-coated and uncoated samples,suggesting favorable osteogenic properties.

关键词： Copper oxide Zinc oxide Micro-arc oxidation(MAO)coating Corrosion behavior Antibacterial characteristics

Reinforcement Learning-Based MAS Interception in Antagonistic Environments

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

IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 270-272页

作者： Siqing Sun Defu Cai Hai-Tao Zhang Ning Xing the School of Artificial Intelligence and Automation the MOE Engineering Research Center of Autonomous Intelligent Unmanned Systemsthe Guangdong Engineering Technology Research Center of Fully Autonomous Unmanned Surface VehiclesHuazhong University of Science and TechnologyWuhan 430074China the State Grid Hubei Electric Power Research Institute Wuhan 430074China IEEE

Dear Editor, As a promising multi-agent systems(MASs) operation, autonomous interception has attracted more and more attentions in these years, where defenders prevent intruders from reaching *** far, most of the relevant methods are applied in ideal environments without agent damages. As a remedy, this letter proposes a more realistic interception method for MASs suffered by damages.

关键词： agent MAS destination