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21st Chinese Materials Conference, CMC 2020

作者： Yao, Jiansheng Wang, Lili Dong, Longpei Yang, Shu Yang, Wei Wang, Zengli Shen, Bin Science and Technology on Advanced High Temperature Structural Materials Laboratory AECC Beijing Institute of Aeronautical Materials Beijing100095 China Laboratory of Functional Films School of Materials Science and Engineering Xi’an University of Technology Xi’an710048 China

ISBN: (纸本)9783035717389

The interfacial reaction between alloys and ceramic materials is an important factor to influence the quality and service performance of the turbine blade. In this paper, three typical height sections of 120 mm, 160 mm and 210 mm were selected, and the interface reactions between DD6 single crystal superalloy and silica based ceramic cores were investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS). The results showed that the infiltration degree of the melt alloy increased with the increase of reaction time. The thickness of the reaction layer could be over 0.3 mm when the reaction time increased up to 70 min. The main reasons of forming the infiltration layer were the infiltration of the Al element and the interfacial reaction between the Al element and the ceramic core. There formed an aluminum deficient layer on the metal surface because of the interface reaction between the alloy and the ceramic core. The dense layer formed by interfacial reaction on the surface of the core will cause some difficulties for core leaching. © 2021 Trans Tech Publications Ltd, Switzerland.

关键词： Silica

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Lightweight Y2O3 stabilized ZrO2 (YSZ) fiber porous ceramics with ultra-low thermal conductivity

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Ceramics International 2025年

作者： Zhao, Yingjie Sun, Xiaohong Guo, Ruisong Liu, Hongyao Zhao, Xinqi Huo, Mingda Ren, Junbo Fu, Weijie Li, Xin School of Materials Science and Engineering State Key Laboratory of Precious Metal Functional Materials Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education Tianjin University Tianjin 300072 China School of Materials Science and Engineering State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an710049 China School of Materials Science and Engineering Key Laboratory of Intelligent Sensing Materials and Chip Integration Technology of Zhejiang Province Hangzhou Innovation Institute of Beihang University Hangzhou310052 China

Fiber porous ceramics have numerous applications in protecting structural parts from melting due to combustion gases in aircraft engines. Although these materials have been utilized for decades, considerable research continues to focus on their further optimization, particularly in enhancing high-temperature resistance, lowering thermal conductivity, and improving compressive strength. In this work, the three-dimensional Y2O3-stabilized ZrO2 (YSZ) fiber porous ceramics were fabricated by adding silica-boron sol (SBS) as an inorganic binder to the YSZ fiber substrate followed by a pressureless sintering process. During this process, a borosilicate glass phase was developed at the intersections of the fibers, helping enhance the thermal stability and improve mechanical properties. The three-dimensional YSZ fiber porous ceramics were characterized by ultra-low thermal conductivity (0.054–0.065 W·m−1·K−1), enhanced compressive strength (144.82–238.81 kPa), high open porosity (88.64–91.67 %) and extremely low bulk density (0.41–0.53 g·cm−3). When the SBS content in the YSZ fiber porous ceramics was 25 wt%, the sample achieved optimal overall performance, with a low bulk density of 0.44 g·cm−3, thermal conductivity of 0.058 W·m−1·K−1 and the compressive strength of 201.26 kPa. The research provides critical insights for preparation and engineering applications of YSZ fiber porous ceramics in aircraft engine thermal protection systems. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Binders

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Carboxylated carbon nanotubes with high electrocatalytic activity for oxygen evolution in acidic conditions

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InfoMat 2022年第1期4卷 130-141页

作者： Xin Zhang Wenqing Zhang Jianying Dai Mingzi Sun Jun Zhao Lifei Ji Lin Chen Fanlong Zeng Fengchun Yang Bolong Huang Liming Dai Key Laboratory of Synthetic and Natural Functional Molecule Chemistry(Ministry of Education) College of Chemistry and Material ScienceNorthwest UniversityXi'anChina Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic UniversityKowloonHong Kong SARChina Centre of Advanced Carbon Materials School of Chemical EngineeringUniversity of New South WalesSydneyAustralia

Since most electrocatalysts for oxygen evolution reaction(OER),except for precious metal oxides RuO_(2) and IrO_(2),are unstable in harsh acidic solutions,it is highly desirable to develop high-performance OER electrocatalysts for acidic media,though it is still a big ***,we report a simple strategy to produce carboxyl-enriched multiwalled carbon nanotubes(COOH-MWNTs)that exhibit stable and high electrocatalytic activities for OER in acidic solutions,showing an overpotential at a current density of 10 mA cm^(–2) and a Tafel slope as low as of 265 mV and 82 mV dec^(–1),*** far as we are aware,these results represent the best OER performance for metal-free electrocatalysts,even comparable to those of RuO_(2) and IrO_(2).We have further revealed the catalytic mechanism,which involves one electron lose from the COOH-MWNTs catalyst at the beginning of the OER process to trigger H_(2)O molecule oxidation by forming peralcohol,followed by the recapture of one electron from water molecule to oxidize water and to recover the initial state for the COOH-MWNTs *** unravel of this new OER mechanism is important as it provides new insights into the crucial role of organic functional groups in electrocatalytic ***,the mechanistic understanding can be used to guide the design and development of novel metalfree catalysts for acidic OER electrocatalysis and beyond.

关键词： acidic oxygen evolution carbon nanotubes carboxylation defect metal-free catalytic mechanism

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Antiferroelectric Altermagnets: Antiferroelectricity Alters Magnets

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Physical Review Letters 2025年第10期134卷 106801-106801页

作者： Xunkai Duan Jiayong Zhang Ziye Zhu Yuntian Liu Zhenyu Zhang Igor Žutić Tong Zhou Eastern Institute for Advanced Study Eastern Institute of Technology Ningbo Zhejiang 315200 China School of Physics and Astronomy Shanghai Jiao Tong University Shanghai 200240 China School of Physical Science and Technology Suzhou University of Science and Technology Suzhou 215009 China International Center for Quantum Design of Functional Materials (ICQD) and Hefei National Laboratory University of Science and Technology of China Hefei 230026 China Department of Physics University at Buffalo State University of New York Buffalo New York 14260 USA

Magnetoelectric coupling is crucial for uncovering fundamental phenomena and advancing technologies in high-density data storage and energy-efficient devices. The emergence of altermagnets, which unify the advantages of ferromagnets and antiferromagnets, offers unprecedented opportunities for magnetoelectric coupling. However, electrically tuning altermagnets remains an outstanding challenge. Here, we demonstrate how this challenge can be overcome by using antiferroelectricity and ferroelectricity to modulate the spin splitting in altermagnets, employing a universal, symmetry-based design principle supported by an effective model. We introduce an unexplored class of multiferroics: antiferroelectric altermagnets (AFEAM), where antiferroelectricity and altermagnetism coexist in a single material. From first-principles calculations, we validate the feasibility of AFEAM in well-established van der Waals metal thio(seleno)phosphates and perovskite oxides. We reveal the design of AFEAM ranging from two-dimensional monolayers to three-dimensional bulk structures. Remarkably, even a weak electric field can effectively toggle spin polarization in the AFEAM by switching between antiferroelectric and ferroelectric states. Our findings not only enrich the understanding of magnetoelectric coupling but also pave the way for electrically controlled spintronic and multiferroic devices.

关键词： Perovskite

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A novel core-shell rifampicin/isoniazid electrospun nanofiber membrane for long time drug dissolution

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Engineered Regeneration 2022年第1期3卷 73-79页

作者： Chenxi Li Yueqi Liu Ming Wei Jun Liu Xiaomin Yu Ping Hu Yong Liu Beijing Key Laboratory of Advanced Functional Polymer Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China College of Mechanical and Electric Engineering Beijing University of Chemical TechnologyBeijing 100029China Department of Infectious Disease and Clinical Microbiology Beijing Chaoyang HospitalCapital Medical UniversityBeijing 100020China Department of Chemical Engineering Tsinghua UniversityBeijing 100084China

Rifampicin(RIF)and isoniazid(INH)are commonly applied jointly in clinical to improve the treatment efficacy of *** to the metabolism of the kidneys,most of RIF and INH would be excreted by human bodies after reaching a high drug concentration,which causes serious waste of drugs and does harm to our *** this study,polylactic acid(PLLA)was chosen as the carrier to prepare core-shell drug-loaded nanofibers with RIF in the shell and INH in the core by coaxial *** results showed that the average diameter of the core-shell drug-loaded fibers with an obvious core-shell structure was about 650 *** of RIF and INH in the fibers became amorphous;the rest maintained *** combination of PLLA and RIF made the fibers obvious hydrophobic and exhibited a slowly phased sustained-dissolve property during in vitro dissolution *** in vitro antibacterial experiments confirmed that the core-shell drug-loaded nanofibers had a favorite inhibitory effect on Staphylococcus aureus,which endowed practical medical value to the *** core-shell drug-loaded nanofibers effectively separated RIF and INH,preventing the degradation of RIF caused by the direct contact of the two *** slow-dissolve characteristics can maintain a relatively stable drug concentration and avoid the damage to the human body caused by the quick dissolve and rapid metabolism of *** combination with coaxial electrospinning fills the gap in the core-shell system with two drugs and has great significance in the future.

关键词： Dual drug delivery Core-shell structure Coaxial electrospinning Phased sustained-dissolve Staphylococcus aureus

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Carbon decorated Li_(3)V_(2)(PO_(4))_(3) for high-rate lithium-ion batteries:Electrochemical performance and charge compensation mechanism

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Journal of Energy Chemistry 2021年第2期30卷 124-131,I0005页

作者： Manling Ding Chen Cheng Qiulong Wei Yue Hu Yingying Yan Kehua Dai Jing Mao Jinghua Guo Liang Zhang Liqiang Maig Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&1 DevicesSoochow UniversitySuzhou 215123JiangsuChina Department of Materials Science and Engineering Fujian Key Laboratory of Materials GenomeCollege of MaterialsXiamen UniversityXiamen 361005FujianChina College of Chemistry Tianjin Normal UniversityTianjin 300387China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina Advanced Light Source Lawrence Berkeley National LaboratoryBerkeleyCA 94720United States Department of Chemistry and Biochemistry University of CaliforniaSanta CruzCA 95064United States State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of Technology.Wuhan 430070HubeiChina

Fast charging and high-power delivering batteries are highly demanded in mobile electronics,electric vehicles and grid energy storage,but there are full of *** star-material Li_(3)V_(2)(PO_(4))_(3) is demonstrated as a promising high-rate cathode material meeting the above ***,we report the carbon decorated Li_(3)V_(2)(PO_(4))_(3) (LVP/C) cathode prepared via a facile method,which displays a remarkable high-rate capability and long-term cycling ***,the prepared LVP/C delivers a high discharge capacity of 122 mAh g^(-1)(-93% of the theoretical capacity) at a high rate up to 20 C and a superior capacity retention of 87.1% after 1000 ***,by applying a combination of X-ray absorption spectroscopy and full-range mapping of resonant inelastic X-ray scattering,we clearly elucidate the structural and chemical evolutions of LVP upon various potentials and cycle *** show unambiguous spectroscopic evidences that the evolution of the hybridization strength between V and O in LVP/C as a consequence of lithiation/delithiation is highly reversible both in the bulk and on the surface during the discharge-charge processes even over extended cycles,which should be responsible for the remarkable electrochemical performance of LVP/*** present study provides not only an effective synthesis strategy but also deeper insights into the surface and bulk electrochemical reaction mechanism of LVP,which should be beneficial for the further design of high-performance LVP electrode materials.

关键词： Lithium-ion batteries Li_(3)V_(2)(PO_(4))_(3) Charge compensation mechanism X-ray absorption spectroscopy Resonant inelastic X-ray scattering

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3D Color Printing by Additive Manufacturing of Metallic Thin Films

3D Color Printing by Additive Manufacturing of Metallic Thin...

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CLEO: science and Innovations, S and I 2022

作者： Choi, Shinhyuk Zhao, Zhi Zuo, Jiawei Bai, Jing Yao, Yu Wang, Chao School of Electrical Computer and Energy Engineering Arizona State University TempeAZ85287 United States College of Materials Science and Engineering Key Laboratory of Advanced Functional Materials Education Ministry of China Beijing University of Technology Beijing100124 China

We demonstrate a new structural color printing technology for micro-scaled images based on polymer-assisted photochemical metal deposition (PPD), a room-temperature, ambient, and additive manufacturing process without... 详细信息

ISBN: (纸本)9781557528209

关键词： Etching

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电镀法实现毫米厚单晶铜板的制备

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science Bulletin 2023年第15期68卷 1611-1615,M0003页

作者：李兴光张智宏张志斌寇金宗吴慕鸿赵孟泽乔瑞喜丁志强张志强刘放杨晓楠邹定鑫王新强高鹏付莹王恩哥刘开辉 State Key Laboratory for Mesoscopic Physics Frontiers Science Centre for Nano-optoelectronicsSchool of PhysicsPeking UniversityBeijing 100871China Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface ScienceState Key Laboratory for Advanced Metals and MaterialsUniversity of Science and Technology BeijingBeijing 100083China Songshan Lake Materials Laboratory Dongguan 523808China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China International Centre for Quantum Materials Collaborative Innovation Centre of Quantum MatterPeking UniversityBeijing 100871China Interdisciplinary Institute of Light-Element Quantum Materials and Research Centre for Light-Element Advanced Materials Peking UniversityBeijing 100871China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China School of Physics Liaoning UniversityShenyang 110036China

在单晶衬底上外延电镀金属为获得高度有序的金属薄膜提供了一种经济高效的方法.在传统外延电镀过程中,随镀层厚度增加,缺陷数量变多,出现孪晶,并进一步导致镀层结构向多晶转变,使得传统单晶衬底上的外延电镀只能获得几微米厚的单晶薄膜... 详细信息

在单晶衬底上外延电镀金属为获得高度有序的金属薄膜提供了一种经济高效的方法.在传统外延电镀过程中,随镀层厚度增加,缺陷数量变多,出现孪晶,并进一步导致镀层结构向多晶转变,使得传统单晶衬底上的外延电镀只能获得几微米厚的单晶薄膜.因此,需要开发一种新的策略来调节电镀过程,实现更厚金属单晶的制备.本文以高指数单晶铜箔(25μm)为阴极,利用外延电镀法成功制备出毫米厚的单晶铜板.研究发现,高指数单晶铜表面独特的原子台阶,能够引导铜原子的有序沉积,减少缺陷、层错或晶格孪晶的形成,进而有助于更厚单晶铜的外延电镀.与相同厚度的多晶铜相比,所制备的单晶铜在电导率、延展性和疲劳性能方面有显着提升.该工作为单晶铜板的规模化生产提供了新的策略,有望推动单晶铜在高速、大功率、柔性电路等领域的高端应用.

关键词：电镀过程多晶转变镀层厚度镀层结构电镀法金属薄膜单晶铜铜原子

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Cobalt coordination with pyridines in sulfurized polyacrylonitrile cathodes to form conductive pathways and catalytic M-N4S sites for accelerated Li-S kinetics

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Journal of Energy Chemistry 2021年第10期30卷 170-178,I0005页

作者： Amir Abdul Razzaq Ganwen Chen Xiaohui Zhao Xietao Yuan Jiapeng Hu Ziwei Li Yufeng Chen Jiabin Xu Rahim Shah Jun Zhong Yang Peng Zhao Deng Soochow Institute for Energy and Materials Innovations College of EnergySoochow UniversitySuzhou 215006JiangsuChina Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province Soochow UniversitySuzhou 215006JiangsuChina Institute of Functional Nano and Soft Materials Laboratory(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123JiangsuChina School of Physics University of Electronic Science and Technology of ChinaChengdu 610054SichuanChina

Sulfurized polyacrylonitrile(SPAN)represents a unique class of cathode material for lithium sulfur(Li-S)batteries as it eradicates the polysulfides shuttling issue in carbonate-based ***,due to the essential chemical S-linking and organic nature of SPAN,the active mass percentage and rate capability are two bottleneck issues preventing its ultimate deployment outside of *** the current work,aiming to endow both the charge conductivity and catalytic activity to SPAN for maximizing the redox kinetics of S conversion,a freestanding nanofibrous SPAN cathode embedding conductive CNTs and atomically dispersed Co centers is fabricated via multivariate *** the CNTs enable dramatically enhancing the fiber conductivity and generating mesoscopic porosity for facilitating charge and mass transportation,the cross-linking of SPAN by Co-N_(4) S motifs creates extra charge conduction pathways and further serves as the catalytic active sites for expediting redox S *** a result,an extraordinary Li-SPAN performance is achieved with a high specific capacity up to 1856 mAh g^(-1)@0.2 C,a superb rate capability up to 10 C,and an ultra-long battery life up to 1500 cycles@1 ***,our study here provides insights into the adoption of coordination chemistry to maximize the sulfur utilization by ensuring a more complete redox conversion from SPAN to Li2 S,and vice versa.

关键词： Sulfurized polyacrylonitrile Electrospinning Cobalt Coordination chemistry Lithium sulfur batteries

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Structure design,controllable synthesis,and application of metalsemiconductor heterostructure nanoparticles

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Progress in Natural science:Materials International 2020年第1期30卷 1-12页

作者： Yuepeng Lv Sibin Duan Rongming Wang Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface ScienceSchool of Mathematics and PhysicsUniversity of Science and Technology Beijing

Metal-semiconductor heterostructure nanoparticles(NPs) have attracted much interest and extensively been investigated due to their promising potentials in the fields of catalysis,energy conversion and *** to the synergistic effect and coupling effect between metal and semiconductor,designing and controlling the interface structure of metal-semiconductor NPs and understanding the structure-property relationship have great significance for optimizing their physicochemical *** NPs coupled with semiconductors forming several kinds of interface structures,including core-shell,yolk-shell,Janus and oligomer-like structures are summarized in this *** controllable synthesis methods to obtain metal-semiconductor heterostructure NPs with fantastic properties are presented in ***,the structure-property relationship and their applications in the fields of catalysis,energy conversion and storage are also exhibited.A brief outlook is given on the challenges and possible solutions in future development of metal-semiconductor NPs.

关键词： Metal-semiconductor Heterostructure Structure design Synthesis method Application

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