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Spontaneous anchoring Cl intoα-Co(OH)_(2) as efficient and stable oxygen reduction electrocatalysts for seawater battery

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Rare Metals 2024年第7期43卷 3074-3083页

作者： Wang Zheng Xue-Rong Zheng Qi Lu Yan-Hui Cao Yang Wang Hai-Peng Fu Jin-Feng Zhang Yi-Da Deng Wen-Bin Hu School of Materials Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationTianjin UniversityTianjin 300072China State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science and EngineeringHainan UniversityHaikou 570228China Key Laboratory of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110819China

Seawater battery is an advanced energy storage system that enables conversion of chemical energy to electricity by consuming metals,dissolved oxygen and seawater in anode,cathode and electrolyte,***,the oxygen reduction reaction(ORR)activity and stability of electrocatalysts can be easily deactivated due to the severe Cl~-permeation and corrosion in seawater ***,we developed a structural buffer engineering strategy by spontaneously anchoring Cl~-intoα-Co(OH)_(2) as efficient and stable ORR electrocatalysts,in which the ultrathinα-Co(OH)_(2) nanosheets were synthesized using an ultrafast solution high-temperature shock(SHTS)*** large lattice space(~0.8 nm)of layeredα-Co(OH)_(2) ensured the spontaneously penetration of Cl~-into the lattice structure and replaced part of OH~-to formα-Co(OH)_(2-x)Cl_*** continuous leaching and compensating of saturated Cl inα-Co(OH)_(2-x)Cl_x could enhance the Cl~-corrosion resistance and modulate electronic structure of Co metallic sites,thus improving the ORR electrocatalytic activity and stability in seawater ***α-Co(OH)_(2-x)Cl_x seawater batteries display superior onset and half-wave potentials of 0.71 and 0.66 V,respectively,which are much better than the counterparts ofα-Co(OH)_(2) and ofβ-Co(OH)_(2) with no Cl~-penetrating and no buffer ***α-Co(OH)_(2-x)Cl_x-based seawater batteries display stable open-circuit potential of 1.69 V and outstanding specific capacity of 1345 mAh·g^(-1).

关键词： Seawater battery Oxygen reduction electrocatalyst Solution high-temperature shock Structural buffer engineering

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Single-Atom Lithiophilic Sites Confined within Ordered Porous Carbon for Ultrastable Lithium Metal Anodes

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Energy & Environmental materials 2023年第3期6卷 366-372页

作者： Wenzhong Huang Shanlin Liu Ruohan Yu Liang Zhou Zhenhui Liu Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Nanostructure Research Centre Wuhan University of TechnologyWuhan 430070China College of Material Science and Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu hydrogen ValleyFoshan 528200China

Attributing to the high specific capacity and low electrochemical reduction potential,lithium(Li)metal is regarded as the most promising anode for high-energy Li ***,the growth of lithium dendrites and huge volume change seriously limit the development of lithium metal *** overcome these challenges,an ordered mesoporous N-doped carbon with lithiophilic single atoms is proposed to induce uniform nucleation and deposition of Li *** from the synergistic effects of interconnected three-dimensional ordered mesoporous structures and abundant lithiophilic single-atom sites,regulated local current density and rapid mass transfer can be achieved,leading to the uniform Li deposition with inhibition of dendrites and buffered volume *** a result,the as-fabricated anode exhibits a high CE of 99.8%for 200 cycles.A stable voltage hysteresis of 14 mV at 5 mA cm^(−2)could be maintained for more than 1330 h in the symmetric ***,the full cell coupled with commercial LiFePO_(4)exhibits high reversible capacity of 108 mAh g^(−1)and average Coulombic efficiency of 99.8%from 5th to 350th cycles at 1 *** ordered mesoporous carbon host with abundant lithiophilic single-atom sites delivers new inspirations into rational design of high-performance Li metal anodes.

关键词： lithiophilic lithium metal battery ordered mesoporous carbon single atom

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Conversion of magnetron-sputtered sacrificial intermediate layer into a stable FeCo-LDH catalyst for oxygen evolution reaction

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Nano Research 2024年第5期17卷 4307-4313页

作者： Zhiquan Lang Guang-Ling Song Xingpeng Liao Wenzhong Huang Yixing Zhu Haipeng Wang Dajiang Zheng Center for Marine Materials Corrosion and Protection College of MaterialsXiamen UniversityXiamen 361005China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 518055China State Key Laboratory of Physical Chemistry of Solid Surfaces Xiamen UniversityXiamen 361005China The University of Queensland St.LuciaOLD 4072Australia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China

Controllable and scalable preparation of electrocatalyst materials holds significant importance for their practical *** sputtering is a highly effective synthesis method,known for its producing uniform films and allowing easy control of component *** this paper,we propose an in-situ synthesis method for layered double hydroxide(LDH)electrocatalysts through sacrificing magnetron sputtered *** resulting FeCo-LDH catalyst demonstrated a low overpotential of only 300 mV at 10 mA·cm^(-2).Furthermore,we conducted spectroscopic analysis to investigate the surface changes of the catalysts during the oxygen evolution reaction(OER)*** findings indicated that the formation of Co oxyhydroxides plays a beneficial role in enhancing the catalytical performance of the FeCo-LDH for OER *** restructuring strategy of converting a magnetron-sputtered sacrificial film into a catalytical LDH introduces a new avenue to the synthesis of transition metal-based electrocatalysts.

关键词： magnetron co-sputtering surface reconstruction electrocatalyst oxygen evolution reaction

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Synergistic effect of gradient Zn content and multiscale particles on the mechanical properties of Al-Zn-Mg-Cu alloys with coupling distribution of coarse-fine grains

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International Journal of Minerals,Metallurgy and materials 2024年第6期31卷 1392-1405页

作者： Liangliang Yuan Mingxing Guo Yi Wang Yun Wang Linzhong Zhuang Institute of Effectiveness Evaluation of Flying Vehicle Beijing 100085China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China

This study investigated the influence of graded Zn content on the evolution of precipitated and iron-rich phases and grain struc-ture of the alloys,designed and developed the Al–8.0Zn–1.5Mg–1.5Cu–0.2Fe(wt%)alloy with high strength and *** the increase of Zn content,forming the coupling distribution of multiscale precipitates and iron-rich phases with a reasonable matching ratio and dispersion distribution characteristics is *** phenomenon induces the formation of cell-like structures with alternate distribu-tion of coarse and fine grains,and the average plasticity–strain ratio(characterizing the formability)of the pre-aged alloy with a high strength is up to *** reveal the evolution and influence mechanisms of multiscale second-phase particles and the corresponding high formability mechanism of the *** developed coupling control process exhibits considerable potential,revealing remarkable improvements in the room temperature formability of high-strength Al–Zn–Mg–Cu alloys.

关键词： Al–Zn–Mg–Cu alloy iron-rich phase high formability microstructure mechanisms

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Parametric study on the ballistic performance of seamed woven fabrics

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Defence technology（防务技术） 2023年第6期24卷 173-189页

作者： Hang Li Rui Zhang Shengnan Min Yi Zhou Jiuxiao Sun State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityChina School of Materials Design&Engineering Beijing Institute of Fashion Technology100029BeijingChina

The ballistic perforation response of composite fabrics made by combining plain weaves with seaming technology is reported and compared with conventional unseamed plain *** effect of the seaming technique on the ballistic resistance of aramid plain fabrics is investigated by varying the seaming *** ballistic experiment uses 8 mm diameter spherical projectiles to impact different fabric sample targets with velocities of 230 m/s and 400 m/*** ballistic performance of seamed and unseamed fabrics is characterized by the specific energy absorption(SEA)values of the *** results show that the seamed fabric has a better energy absorption capacity than the unseamed fabric,e.g.,the SEA of sample 5(seaming lines on every four yarns in a single-ply fabric system)is 135%of sample 1(plain weave without thread seaming).In the single-layer system,the effect of the seaming technique on the energy absorption of the fabric in significant when considering seaming density,seaming orientation,seaming distance,and seaming material on the plain fabric;In addition,it is found that in multi-layer systems,seamed panels(e.g.,sample 7)exhibit better ballistic performance than multi-layer fabrics(e.g.,sample 2),and the specific energy absorption of sample 7 is approximately 156%and 200%of sample 6 and sample 2,***,the energy absorption of the fabric decreases with the increase of impact velocity,which is related to the energy absorption mechanism of the soft fabric system at high impact *** yarn pull-out tests shows that the constraint provided by the seaming thread increases the friction between the fabric-forming ***,when the constraint exceeds a certain level,it is detrimental to the energy absorption of the fabric,which may be due to the overconstraint of yarn mobility.

关键词： Fabric Ballistic performance Seaming technology Energy absorption

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Three-Layer Structured SnO2@C@TiO2 Hollow Spheres for High-Performance Sodium Storage

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Energy & Environmental materials 2021年第3期4卷 428-433页

作者： Yu Tian Ping Hu Ting Zhu Zhenhui Liu Guangwu Hu Congcong Cai Zelang Jian Liang Zhou Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory

The unsatisfactory conductivity and large volume variation severely handicap the application of SnO2in sodium-ion batteries（SIBs）. Herein, we design unique three-layer structured SnO2@C@TiO2hollow spheres to tackle the above-mentioned issues. The hollow cavity affords empty space to accommodate the volume variation of SnO2, while the C and TiO2protecting shells strengthen the structural integrity and enhances the electrical conductivity. As a result, the three-layer structured SnO2@C@TiO2hollow spheres demonstrate enhanced Na storage performances. The SnO2@C@TiO2manifests a reversible capacity two times to that of pristine SnO2hollow spheres. In addition, Ex situ XRD reveals highly reversible alloying and conversion reactions in SnO2@C@TiO2hollow spheres. This study suggests the introduction of a hollow cavity and robust protecting shells is a promising strategy for constructing SIB anode materials.

关键词： hollow sphere SnO2 sodium-ion battery protecting shell structural integrity

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Self-sensing tribological coating with phosphor particles for wear indicator

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Rare Metals 2023年第7期42卷 2462-2469页

作者： Ling He Xue-Yan Wu Wen-Sheng Li Mi-Na Zhang Shu-Jie Liu State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of TechnologyLanzhou730050China School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou730050China

Monitoring of coating health was achieved by embedding sensor materials(MAl_(2)O_(4):Eu^(2+),Dy^(3+),M=Sr,Ba)in tribological *** the luminescence disappears under ultraviolet(UV)light,it means that the functional coating is worn out and that recoating is *** this work,four types of alloy(Cu-14Al-X,Cu,Cu-Al,Al)composite coatings were investigated by vacuum pres sure-as sis ted sintering *** composite coatings with different copper-aluminium alloy matrixes were compared by phase composition,microstructure,luminescence properties and tribological *** results indicate that the Cu-14Al-X matrix composite coating shows not only good resistance to wear but also exhibits strong green light emitting under ultraviolet(UV)*** is the best wear-resistant self-sensitive coating which has potential industrial *** the coating wore or broke,the emitting intensity will decrease or disappear.

关键词： Copper-aluminium alloy coatings Luminescent powders Wear indicator Luminescent spectroscopy Tribology

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synthesis of a novel Al foam with a periodic architecture by introducing hollow Al tubes and Al/Mg powders

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Journal of materials Science & technology 2023年第17期148卷 105-115页

作者： Zhigang Xu Dayong Shen Kai Wang Peng He Jian Zhang Hao Zhang Peng Cao Shangyu Huang Jian Peng Qiang Shen Chuanbin Wang Lianmeng Zhang Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China Wuhan Second Ship Design and Research Institute Wuhan 430205China Department of Chemical and Materials Engineering University of AucklandPrivate Bag 92019Auckland 1142New Zealand

In this work,we synthesized a brand-new Al foam with a periodic structure via a simple powder metallurgical *** periodic architecture consists of both hierarchical porous and bi-directional composition-graded *** results show that the hierarchical porous material includes large pores on millimeter scale inheriting from the hollow structure of the Al tubes,and small pores on mi-crometer scale produced by the sintering of Al/Mg *** bi-directional Mg concentration-graded structure is formed in the tube walls due to the condensation of Mg vapor in the inner tube *** addition of Mg powders achieves excellent metallurgical bonding between the Al powders and the hollow tubes at 550℃.The plateau stress and energy absorption capacity of the Al foam in y-axis compression are significantly higher than that in the x-axis due to their anisotropic *** general,the Al foam with Mg addition presents the most superior compression performance,and we believe that our find-ings could open up a unique strategy for developing high-performance metallic foams with the periodic architecture involving both hierarchical porous and bi-directional graded structure.

关键词： Al foam Hollow Al tube Mg evaporation Bi-directional composition-graded structure Compression properties Energy absorbing performance

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Improving the reliability of classical molecular dynamics simulations in battery electrolyte design

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Journal of Energy Chemistry 2025年第2期101卷 34-41,I0002页

作者： Xin He Yujie Zhang Haomiao Li Min Zhou Wei Wang Ruxing Wang Kai Jiang Kangli Wang State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina State Key Laboratory of Materials Processing and Die&Mould Technology College of Materials Science and EngineeringHuazhong University of Science and Technology Wuhan 430074HubeiChina Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy Hubei University of TechnologyWuhan 430068HubeiChina

Explorations into new electrolytes have highlighted the critical impact of solvation structure on battery performance,Classical molecular dynamics(CMD)using semi-empirical force fields has become an essential tool for simulating solvation ***,mainstream force fields often lack accuracy in describing strong ion-solvent interactions,causing disparities between CMD simulations and experimental *** some empirical methods have been employed in some of the studies to address this issue,their effectiveness has been *** CMD research,supported by quantum chemical calculations and experimental data,reveals that the solvation structure is influenced not only by the charge model but also by the polarization *** empirical approaches that focused solely on adjusting ion-solvent interaction strengths overlooked the importance of polarization *** on this insight,we propose integrating the Drude polarization model into mainstream force fields and verify its feasibility in carbonate,ether,and nitrile *** experimental results demonstrate that this approach significantly enhances the accuracy of CMD-simulated solvation *** work is expected to provide a more reliable CMD method for electrolyte design,shielding researchers from the pitfalls of erroneous simulation outcomes.

关键词： Electrolyte Classical molecular dynamics Solvation structure Simulations

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Tuning Structural and Electronic Configuration of FeN_(4) via External S for Enhanced Oxygen Reduction Reaction

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Energy & Environmental materials 2024年第2期7卷 93-101页

作者： Shidong Li Lixue Xia Jiantao Li Zhuo Chen Wei Zhang Jiexin Zhu Ruohan Yu Fang Liu Sungsik Lee Yan Zhao Liang Zhou Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan 528200China Chemical Sciences and Engineering Division Argonne National Laboratory9700 South Cass AvenueLemontIL 60439USA NRC(Nanostructure Research Centre) Wuhan University of TechnologyWuhan 430070China X-ray Science Division Advanced Photon SourcesArgonne National Laboratory9700 South CassAvenueLemontIL 60439USA State Key Laboratory of Silicate Materials for Architectures International School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China The Institute of Technological Sciences Wuhan UniversityWuhan 430072China Hubei Longzhong Laboratory Xiangyang 441000China

The Fe-N-C material represents an attractive oxygen reduction reaction electrocatalyst,and the FeN_(4)moiety has been identified as a very competitive catalytic active *** tuning of the coordination structure of FeN_(4)has an essential impact on the catalytic ***,we construct a sulfur-modified Fe-N-C catalyst with controllable local coordination environment,where the Fe is coordinated with four in-plane N and an axial external *** external S atom affects not only the electron distribution but also the spin state of Fe in the FeN_(4)active *** appearance of higher valence states and spin states for Fe demonstrates the increase in unpaired *** the above characteristics,the adsorption and desorption of the reactants at FeN_(4)active sites are optimized,thus promoting the oxygen reduction reaction *** work explores the key point in electronic configuration and coordination environment tuning of FeN_(4)through S doping and provides new insight into the construction of M-N-C-based oxygen reduction reaction catalysts.

关键词： coordination structure electronic configuration FeN_(4)moiety oxygen reduction reaction sulfur doping

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