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Semi-template based,biomimetic-architectured,and mechanically robust ceramic nanofibrous aerogels for thermal insulation

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Nano Research 2022年第6期15卷 5581-5589页

作者： Lvye Dou Yang Si Jianyong Yu Bin Ding Innovation Center for Textile Science and Technology College of TextilesDonghua UniversityShanghai 200051China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Energy efficient buildings require novel thermal insulators accompanied by lightweight,mechanically robust,fire resistant,and low thermal *** fibrous aerogels have emerged as promising candidates,however it’s difficult for these materials to achieve exceptional mechanical and thermal insulation performance ***,we demonstrate a unique semi-template method to fabricate biomimetic-architectured silica/carbon dual-fibrous aerogel with robust mechanical ***,aerogels with honeycomb-like cellular and nanofiber/nanonet cell wall were constructed by freezedrying the homogeneous dispersion of SiO_(2)nanofibers and cellulose nanofibers *** is worth noting that the biomimetic structure has been perfectly inherited even subjected to high-temperature *** a result,the excellent structural stability brought by the novel structure enables the aerogel to completely recover under large compression and buckling strain of 80%,and exhibit robust fatigue resistance over 200,000 *** importantly,the aerogels exhibit ultralow thermal conductivity(0.023 W·m^(−1)·K^(−1)),superior flame retardancy,together with excellent thermal insulation performance over a wide temperature ranging from−196 to 350°*** fabrication of such materials may provide new ideas for the development of next-generation thermal insulators for harsh conditions.

关键词： silica nanofiber carbon nanonet biomimetic-architectured aerogel mechanically robust thermal insulation

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Bioinspired Additive Manufacturing of Hierarchical materials: From Biostructures to Functions

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Research 2024年第1期2023卷 533-559页

作者： Jingjiang Wei Fei Pan Hang Ping Kun Yang Yanqing Wang Qingyuan Wang Zhengyi Fu Institute for Advanced Materials Deformation and Damage from Multi-Scale Institute for Advanced StudyChengdu UniversityChengdu 610106P.R.China Department of Chemistry University of BaselBasel 4058Switzerland State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070P.R.China College of Polymer Science and Engineering Sichuan UniversityChengdu 610065P.R.China

Throughout billions of years,biological systems have evolved sophisticated,multiscale hierarchical structures to adapt to changing *** are synthesized under mild conditions through a bottom-up self-assembly process,utilizing substances from the surrounding environment,and meanwhile are regulated by genes and *** manufacturing,which mimics this natural process,provides a promising approach to developing new materials with advantageous properties similar to natural biological *** review presents an overview of natural biomaterials,emphasizing their chemical and structural compositions at various scales,from the nanoscale to the macroscale,and the key mechanisms underlying their ***,this review describes the designs,preparations,and applications of bioinspired multifunctional materials produced through additive manufacturing at different scales,including nano,micro,micro-macro,and macro levels.

关键词： materials structures utilizing

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Size effect enabling additive-free MXene ink with ultrahigh conductivity for screen printing of wireless electronics

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Nano Research 2023年第8期16卷 11012-11017页

作者： Shuaishuai Chen Huaqiang Fu Yunfa Si Xueyu Liu Zhe Wang Yixue Duan Zixin Zhang Hao Feng Xin Zhao Daping He State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Engineering Research Center of RF-Microwave Technology and Application Wuhan University of TechnologyWuhan 430070China School of Science Wuhan University of TechnologyWuhan 430070China

Facile preparation of additive-free inks with both high viscosity and high conductivity is critical for scalable screen printing of wireless electronics,yet very *** materials exhibit excellent conductivity and hydrophilicity,showing great potential in the field of additive-free inks for screen ***,we demonstrate the synthesis of additive-free two-dimensional(2D)titanium carbide MXene inks,and realize screen-printed MXene wireless electronics for the first *** viscosity of MXene ink is solely regulated by tuning the size of MXene nanosheet without any additives,hence rendering the printed MXene film extremely high conductivity of 1.67×10^(5) S/m and fine printing resolution down to 0.05 mm on various flexible ***,radio frequency identification(RFID)tags fabricated using the additive-free MXene ink via screen printing exhibit stable antenna reading performance and superb *** article,thus offers a new route for the efficient,low-cost and pollution-free manufacture of printable electronics based on additive-free MXene inks.

关键词： size effect additive-free MXene ink screen printing wireless electronics radio frequency identification(RFID)

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Weakly solvating electrolyte enabling solvent-free co-intercalation for stable potassium-ion storage in graphite

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Nano Research 2025年第3期18卷 234-242页

作者： Chaojie Cheng Wencong Feng Feiyue Wang Jingke Ren Deyang Guan Wei Chen Jean-Jacques Gaumet Kai Fu Xiaobin Liao Wen Luo State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Xinjiang UniversityUrumqi 830017China Laboratoire de Chimie et Physique:Approche Multi-échelles des Milieux Complexes(LCP-A2MC)Institut Jean BarriolUniversitéde LorraineMetz 57070France

Ether electrolytes for potassium-ion batteries exhibit a broader electrochemical window and greater applicability,yet most of them are high-concentration electrolytes with elevated *** this study,we propose the use of a weakly solvating cyclic ether electrolyte with tetrahydropyran(THP)as the *** approach induces the formation of a thin and dense inorganic-rich solid electrolyte interphase(SEI)film,which is accompanied by a decrease in the activation energy of electrode interfacial reactions due to the weak ligand binding of THP with K^(+).Density functional theory(DFT)simulations also corroborate the hypothesis that K^(+)has a lower binding energy with *** potassium storage process,the phenomenon of solvent co-intercalation of graphite does not occur,which greatly reduces the destruction of the graphite structure and enables a superior electrochemical performance and enhanced cycling stability at a lower concentration(2 M).At a current density of 0.2 C(55.8 mA·g^(-1)),the battery can be stably cycled for 800 cycles(approximately 8 months)with a specific capacity of 171.8 mAh·g^(-1).This study provides a new ether-based electrolyte for potassium ion batteries and effectively reduces the electrolyte cost,which is expected to inspire further development of energy storage batteries.

关键词： weakly solvating electrolyte co-intercalation graphite potassium ion batteries

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Modeling of the process-induced stress, damage, microstructure, and deformation evolution during the pyrolysis process manufacturing CMCs

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Journal of advanced Ceramics 2023年第12期12卷 2345-2359页

作者： Qiang Liu Suwan Ma Zeshuai Yuan Yuan Li Xiaodong Gong Junping Li Man Zhu Tianjian Lu State Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and AstronauticsNanjing 210016China Key Laboratory of Advanced Functional Composites Technology Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China College of Civil Engineering Nanjing Tech UniversityNanjing 211800China

An insightful understanding of the formation mechanism of process-inherent defects anddeformation is increasingly important for the property evaluation and structural design of ceramicmatrix composites (CMCs). For this purpose, a coupled thermal–diffusive–mechanical modelingapproach was proposed by considering three important phenomena that occur during the pyrolysisprocess for manufacturing CMCs: variations of the physical and mechanical properties of theconstituents, generation and diffusive of pyrolysis gas, and multiple thermal deformations. Thesynergistic effects of these three phenomena on the stress, damage development, microstructuralmorphology, and process deformation of SiC matrix composites were investigated using finiteelement simulations. This new approach was validated by comparing the simulation and experimentalresults. Significant volume shrinkage of the matrix during the polymer-to-ceramic transformationresulted in large tensile stresses and subsequent highly fragmented microstructure in CMCs. Thepyrolysis-gas-induced expansion on the matrix under a damage state may yield a positive processdeformation of CMCs at the macroscale, overcoming the effects of the volume shrinkage of the bulkmatrix at the microscale. The modeling approach is expected to guide high-quality manufacturing ofCMCs and comprehensive studies of structure–processing–property relationships.

关键词： SiC pyrolysis gas process simulation damage process deformation

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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

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Comprehensive Chlorine Suppression:Advances in materials and System Technologies for Direct Seawater Electrolysis

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Nano-Micro Letters 2025年第5期17卷 297-325页

作者： Cenkai Zhao Zheyuan Ding Kunye Zhang Ziting Du Haiqiu Fang Ling Chen Hao Jiang Min Wang Mingbo Wu State Key Laboratory of Heavy Oil Processing College of New EnergyChina University of Petroleum(East China)Qingdao 266580People’s Republic of China Beijing National Laboratory for Molecular Sciences New Cornerstone Science LaboratoryCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871People’s Republic of China Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237People’s Republic of China

Seawater electrolysis offers a promising pathway to generate green hydrogen,which is crucial for the net-zero emission *** seawater electrolysis is severely limited by high energy demands and system complexity,while the direct seawater electrolysis bypasses pre-treatment,offering a simpler and more cost-effective ***,the chlorine evolution reaction and impurities in the seawater lead to severe corrosion and hinder electrolysis’s ***,we review recent advances in the rational design of chlorine-suppressive catalysts and integrated electrolysis systems architectures for chloride-induced corrosion,with simultaneous enhancement of Faradaic efficiency and reduction of electrolysis’s ***,promising directions are proposed for durable and efficient seawater electrolysis *** review provides perspectives for seawater electrolysis toward sustainable energy conversion and environmental protection.

关键词： Direct seawater electrolysis Oxygen evolution reaction Hydrogen evolution reaction Chlorine suppression Seawater electrolysis system

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Interface catalytic reduction of alumina by nickle for the aluminum nanowire growth: Dynamics observed by in situ TEM

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Nano Research 2024年第3期17卷 1225-1231页

作者： Zichun Wang Dan Wang Ang Li Lizhuo Wang Xiaodong Han Yijiao Jiang Jianfeng Chen Jun Huang Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic–Inorganic CompositesBeijing University of Chemical TechnologyBeijing 100029China Laboratory for Catalysis Engineering School of Chemical and Biomolecular EngineeringThe University of SydneyNew South Wales 2006Australia Beijing Key Laboratory of Microstructure and Property of Advanced Materials Beijing University of TechnologyBeijing 100024China Department of Engineering Macquarie UniversitySydneyNew South Wales 2109Australia

Metal nanowires show promise in a broad range of applications and can be fabricated via a number of methods,such as vapor–liquid–solid process and template-based ***,the synthesis of Al nanowires(NWs)is still challenging from the stable alumina *** this work,the Ni-catalyzed fabrication of Al NWs has been realized using various Al_(2)O_(3) *** growth dynamics of Al NWs on Ni/Al_(2)O_(3) was studied using in situ transmission electron microscopy(TEM).The effect of alumina structures,compositions,and growth temperature were *** growth of Al NWs correlates with the Na addition to the alumina *** no eutectic mixture of nickel aluminide was formed,a mechanism of Ni-catalyzed reduction of Al_(2)O_(3) for Al NWs growth has been proposed instead of the vapor–liquid–solid *** key insights reported here are not restricted to Ni-catalyzed Al NWs growth but can be extended to understanding the dynamic change and catalytic performance of Ni/Al_(2)O_(3) under working conditions.

关键词： in situ transmission electron microscopy(TEM) Al nanowires alumina reduction nanowire growth

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Ultrasensitive Frequency Shifting of Dielectric Mie Resonance near Metallic Substrate

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Research 2022年第4期2022卷 155-163页

作者： Chuanbao Liu Changxin Wang Junhong Chen Yanjing Su Lijie Qiao Ji Zhou Yang Bai School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China State Key Laboratory of New Ceramics and Fine Processing Tsinghua UniversityBeijing 100084China

Dielectric resonators on metallic surface can enhance far-field scattering and boost near-field response having promising applications in nonlinear optics and reflection-type ***,the dependence of gap size between dielectric resonator and metallic surface on Mie resonant frequency is complex and desires a comprehensive physical ***,we systematically study the effect of metallic substrate on the magnetic dipole(MD)resonant frequency at X-band by placing a high permittivity CaTiO_(3) ceramic block on metallic substrate and regulating their gap *** simulated and experimental results show that there are two physical mechanisms to codetermine the metallic substrate-induced MD *** greatly enhanced electric field pair in the gap and the coupling of MD resonance with its mirror image are decisive for small and large gaps,respectively,making the MD resonant frequency present an exponential blue shift first and then a slight red shift with increasing gap ***,we use the two mechanisms to explain different frequency shifting properties of ceramic sphere near metallic ***,taking advantage of the sharp frequency shifting to small gaps,the ceramic block is demonstrated to accurately estimate the thickness or permittivity of thin film on metallic substrate through a governing equation derived from the method of symbolic *** believe that our study will help to understand the resonant frequency shifting for dielectric particle near metallic substrate and give some prototypes of ultrasensitive detectors.

关键词： metallic ceramic shifting

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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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