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science Bulletin 2023年第23期68卷 2936-2944,M0005页

作者：张磊宁孔潇董际臣丁峰 Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications MOE Key Laboratory of Cluster ScienceSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China State Key Laboratory of Information Functional Materials 2020 X-LabShanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

最近,通过将外延生长的多层二维晶畴进行无缝拼接,研究人员成功实现了晶圆级单晶二维多层材料的合成.不同于以往观察到的类似婚礼蛋糕或倒置婚礼蛋糕结构,这些多层二维晶畴中所有层都具有完全相同的尺寸和形状,即多层同步生长.基于此,... 详细信息

最近,通过将外延生长的多层二维晶畴进行无缝拼接,研究人员成功实现了晶圆级单晶二维多层材料的合成.不同于以往观察到的类似婚礼蛋糕或倒置婚礼蛋糕结构,这些多层二维晶畴中所有层都具有完全相同的尺寸和形状,即多层同步生长.基于此,本文通过理论计算探索了多层二维材料的不同生长模式,提出了多层同步生长的物理模型,揭示了基底上液体异质表面层的形成是保证同步生长的关键性因素.作者指出在生长过程中,多层二维材料嵌入在衬底的异质表面层中,同时底层与固态基底直接接触.异质层能有效钝化二维材料的边缘,从而防止这些活性边缘的融合,而异质层与基底之间的高界面则迫使不同层的二维材料边缘保持同步生长.通过对多层同步生长机理的深入了解,本文揭示了发生多层同步生长的条件,为合成层数可控的晶圆级单晶二维材料提供了新的思路.

关键词： 2D materials Epitaxial growth Thickness control Synchronic growth

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A Comparative Study on the Erosion Behavior and Mechanism of Chrome-Coated 25cr3mo2wniv Steel and Qpq 25cr3mo2wniv Steel

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SSRN 2024年

作者： Dou, Caihong Pan, Kunming Wang, Changji Wei, Shizhong Zhang, Cheng Xu, Liujie Cui, Hailin Liang, Yongfeng Huang, Jinfeng Henan Key Laboratory of High-temperature Structural and Functional Materials Henan University of Science and Technology Luoyang471003 China Science and Technology on Transient Impact Laboratory Beijing102202 China State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing100083 China

This study aims to compare the erosion behavior and mechanism of chrome-coated 25Cr3Mo2WNiV steel (Cr MPS700V) and QPQ (quench-polish-quench) MPS700V using promoted ignition combustion tests. By studying erosion behavior, it was found that the erosion threshold pressure and temperature of the Cr MPS700V were determined to be 0.2 MPa and 254.3 K higher than those of QPQ MPS700V. The surface morphology after erosion shows that the equivalent erosion depth of QPQ MPS700V is 8.2 μm deeper than that of Cr MPS700V. The superior resistance to erosion of the Cr MPS700V was ascribed to the inhibition of the Kirkendall effect at the interface between the coating and matrix. Small-sized atoms C and N in the QPQ coating were more easily diffused into matrix than large-sized atom Cr before erosion. Moreover, the oxidation heat release of Mo2C precipitated at the QPQ coating/steel interface is higher than that of Cr23C6 precipitated at the Cr coating/steel interface, which reduced the erosion performance of QPQ MPS700V. © 2024, The Authors. All rights reserved.

关键词： Chromium steel

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Enhanced photoresponse of Ti0_(2)/MoS_(2)heterostructure phototransistors by the coupling of interface charge transfer and photogating

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Nano Research 2021年第4期14卷 982-991页

作者： Bingxu Liu Yinghui Sun Yonghuang Wu Kai Liu Huanyu Ye Fangtao Li Limeng Zhang Yong Jiang 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 BeijingBeijing 100083China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China

Two-dimensional(2D)MoS_(2)with appealing physical properties is a promising candidate for next-generation electronic and optoelectronic devices,where the ultrathin MoS_(2)is usually laid on or gated by a dielectric oxide *** oxide/MoS_(2)interfaces widely existing in these devices have significant impacts on the carrier transport of the MoS_(2)channel by diverse interface *** design of the oxide/MoS_(2)interfaces would provide an effective way to break through the performance limit of the 2D devices but has yet been well ***,we report a high-performance MoS_(2)-based phototransistor with an enhanced photoresponse by interfacing few-layer MoS_(2)with an ultrathin Ti0_(2)*** Ti0_(2)is deposited on MoS_(2)through the oxidation of an e-beam-evaporated ultrathin Ti *** a visible-light illumination,the fabricated Ti0_(2)/MoS_(2)phototransistor exhibits a responsivity of up to 2,199 A/W at a gate voltage of 60 V and a detectivity of up to 1.67×10^(13)Jones at a zero-gate voltage under a power density of 23.2μW/mm^(2).These values are 4.0 and 4.2 times those of the pure MoS_(2)*** significantly enhanced photoresponse of Ti0_(2)/MoS_(2)device can be attributed to both interface charge transfer and photogating *** results not only provide valuable insights into the interactions at Ti0_(2)/MoS_(2)interface,but also may inspire new approach to develop other novel optoelectronic devices based on 2D layered materials.

关键词： MoS_(2) heterojunction photodetector charge injection photocurrent

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High entropy(Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12:A novel high temperature stable thermal barrier material

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Journal of Materials science & technology 2020年第13期47卷 57-62页

作者： Heng Chen Zifan Zhao Huimin Xiang Fu-Zhi Dai Wei Xu Kuang Sun Jiachen Liu Yanchun Zhou Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing100076China Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjin300072China Shanghai Chenhua Science and Technology Corporation Limted Shanghai201804China

Ytterbium aluminum garnet(Yb3Al5O12)is considered as a promising thermal barrier ***,the main limitations of Yb3Al5O12 for thermal barrier applications are relative low thermal expansion coefficient and high thermal *** order to overcome these obstacles,herein,a new high entropy(Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 ceramic was designed,and then powders and bulk were prepared through solid-state reaction method and spark plasma sintering(SPS),*** thermal expansion coefficient of HE(Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 is(8.54±0.29)×10^-6 K^-1 at 673 K–1273 K,which is about 9%higher than that of *** thermal conductivity of HE(Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 ceramic is 3.81 W·m^-1 K^-1 at 300 K,which is about 18%lower than that of ***,there is no reaction between HE(Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 and thermally grown(TG)Al2O3 even at 1600℃.After annealing at 1590℃for 18 h,the average grain size of HE(Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 increases only from 1.56μm to 2.27μ*** thermal expansion coefficient to TG Al2O3,low thermal conductivity,good phase stability,excellent chemical compatibility with TG Al2O3 and slow grain growth rate make HE(Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 promising for thermal barrier applications.

关键词： High entropy ceramics (Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 Thermal barrier coatings Thermal conductivity Garnet

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Recent progress on surface chemistryⅡ:Property and characterization

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Chinese Chemical Letters 2025年第1期36卷 8-57页

作者： Xin Li Zhen Xu Donglei Bu Jinming Cai Huamei Chen Qi Chen Ting Chen Fang Cheng Lifeng Chi Wenjie Dong Zhenchao Dong Shixuan Du Qitang Fan Xing Fan Qiang Fu Song Gao Jing Guo Weijun Guo Yang He Shimin Hou Ying Jiang Huihui Kong Baojun Li Dengyuan Li Jie Li Qing Li Ruoning Li Shuying Li Yuxuan Lin Mengxi Liu Peinian Liu Yanyan Liu Jingtao Lü Chuanxu Ma Haoyang Pan JinLiang Pan Minghu Pan Xiaohui Qiu Ziyong Shen Qiang Sun Shijing Tan Bing Wang Dong Wang Li Wang Lili Wang Tao Wang Xiang Wang Xingyue Wang Xueyan Wang Yansong Wang Yu Wang Kai Wu Wei Xu Na Xue Linghao Yan Fan Yang Zhiyong Yang Chi Zhang Xue Zhang Yang Zhang Yao Zhang Xiong Zhou Junfa Zhu Yajie Zhang Feixue Gao Yongfeng Wang Center for Carbon-based Electronics and Key Laboratory for the Physics and Chemistry of Nanodevices School of ElectronicsPeking UniversityBeijing 100871China Spin-X Institute School of MicroelectronicsSouth China University of TechnologyGuangzhou 511442China School of Materials and Energy Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage DevicesGuangdong University of TechnologyGuangzhou 510006China Faculty of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China i-Lab CAS Key Laboratory of Nanophotonic Materials and DevicesSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory for Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjing 210023China Institute of Functional Nano and Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Institute of Physics&University of Chinese Academy of Sciences Beijing 100190China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China College of Chemistry Beijing Normal UniversityBeijing 100875China Beijing National Laboratory for Molecular Sciences(BNLMS) College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China School

Surface with well-defined components and structures possesses unique electronic,magnetic,optical and chemical *** a result,surface chemistry research plays a crucial role in various fields such as catalysis,energy,materials,quantum,and *** science mainly investigates the correspondence between surface property and *** probe microscopy(SPM)techniques are important tools to characterize surface properties because of the capability of atomic-scale imaging,spectroscopy and manipulation at the single-atom *** this review,we summarize recent advances in surface electronic,magnetic and optical properties characterized mainly by SPM-based *** focus on elucidating theπ-magnetism in graphene-based nanostructures,construction of spin qubits on surfaces,topology properties of surface organic structures,STM-based light emission,tip-enhanced Raman spectroscopy and integration of machine learning in SPM studies.

关键词： Surface chemistry Scanning probe microscopy π-Magnetism Spin qubits Tip-enhanced Raman spectroscopy

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Pressureless all-solid-state Na/S batteries with self-supporting Na_(5)YSi_(4)O_(12) scaffolds

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Carbon Energy 2023年第12期5卷 97-110页

作者： Aikai Yang Ruijie Ye Huimin Song Qiongqiong Lu Xingchao Wang Enkhtsetseg Dashjav Kai Yao Daniel Grüner Qianli Ma Frank Tietz Olivier Guillon Forschungszentrum Jülich GmbH Institute of Energy and Climate Research(IEK-1)JülichGermany Institute of Mineral Engineering(GHI) RWTH Aachen UniversityAachenGermany Beijing Key Laboratory of Theory and Technology for Advanced Batteries Materials School of Materials Science and EngineeringPeking UniversityBeijingChina Institute of Materials Henan Academy of SciencesZhengzhouHenanChina Henan Key Laboratory of Advanced Conductor Materials ZhengzhouHenanChina State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources Key Laboratory of Advanced Functional MaterialsAutonomous RegionInstitute of Applied ChemistryCollege of ChemistryXinjiang UniversityUrumqiXinjiangChina Forschungszentrum Jülich GmbH Institute of Energy and Climate Research(IEK-2)JülichGermany Jülich Aachen Research Alliance JARA-EnergyJülichGermany

The development of reliable and affordable all-solid-state sodium metal batteries(ASS-SMBs)requires suitable solid-state electrolytes with cost-efficient processing and stabilized electrode/electrolyte ***,an integrated porous/dense/porous Na_(5)YSi_(4)O_(12)(NYS)trilayered scaffold is designed and fabricated by tape casting using aqueous *** this template-based NYS scaffold,the dense layer in the middle serves as a separator and the porous layers on both sides accommodate the active materials with their volume changes during the charge/discharge processes,increasing the contact area and thus enhancing the utilization rate and homogenizing the current *** Na/NYS/Na symmetric cells with the Pb-coated NYS scaffold exhibit significantly reduced interfacial impedance and superior critical current density of up to 3.0 mA cm^(-2)against Na metal owing to enhanced ***,the assembled Na/NYS/S full cells operated without external pressure at room temperature showed a high initial discharge capacity of 970 mAh g^(-1)and good cycling stability with a capacity of 600 mAh g^(-1)after 150 cycles(based on the mass of sulfur).This approach paves the way for the realization of economical and practical ASS-SMBs from the perspective of ceramic manufacturing.

关键词： Na/S batteries Na_(5)YSi_(4)O_(12) scaffold solid-state electrolytes tape casting

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Enhancing tensile strength and oxidation resistance simultaneously for W-Cu composite by versatile Cr

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Journal of Materials science & technology 2026年 243卷 15-27页

作者： Xianneng Wei Chao Hou Tielong Han Yurong Li Hao Lu Keli Liu Xiaoyan Song State Key Laboratory of Materials Low-Carbon Recycling Key Laboratory of Advanced Functional Materials MOE College of Materials Science and Engineering Beijing University of Technology Beijing 100124 China Beijing Feihang Jiexun Technology Co. Ltd Beijing 100074 China

High mechanical properties and oxidation resistance are simultaneously demanded in high-temperature applications of W-Cu composites. In this study, both tensile strength and oxidation resistance were remarkably enhanced for the W-Cu composite by introducing the versatile Cr element. It was found that after liquid-state sintering, Cr had a multiscale distribution ranging from atomic to submicron scales. A high tensile strength of the Cr-containing W-Cu composite was attributed to multiple reinforcement, including submicron-scale dispersive Cr oxide particles, ultrafine-grained structure of W, coherent interfaces between Cr-rich nanoparticles and matrix, and enhanced bonding at W grain boundaries. The segregation of Cr atoms facilitates electronic coupling with the W atoms, thereby strengthening the W grain boundaries and reducing intergranular fracture in the W phase. Furthermore, the Cr-containing W-Cu composite exhibited much stronger oxidation resistance in a high temperature range of 700–1000 °C than the W-Cu counterpart. In the W-Cu-Cr composite, self-passivation occurs at high temperatures, where a continuous and compact Cr 2 WO 6 layer effectively inhibits oxygen diffusion into the interior region, while simultaneously hindering Cu diffusion into the oxide layer, thus preventing the formation of pores at Cu/oxide layer interfaces. This study provides insight for further development of W-Cu based composites with superior integrated performance.

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Enhancing thermal conductivity of silicone rubber composites by insitu constructing SiC networks:A finite-element study based on first principles calculation

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Nano Research 2023年第1期16卷 1430-1440页

作者： Dongliang Ding Shiyu Zhang Haoyu Liang Xu Wang Ya Wu Yuanming Ye Zhenguo Liu Qiuyu Zhang Guangzhao Qin Yanhui Chen School of Chemistry and Chemical Engineering Shaanxi Key Laboratory of Macromolecular Science and TechnologyKey Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information TechnologyNorthwestern Polytechnical UniversityXi’an 710072China Shenzhen Research Institute of Northwestern Polytechnical University Shenzhen 518057China State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China Queen Mary University of London Engineering School Northwestern Polytechnical UniversityXi’an 710072China Institute of Flexible Electronics Northwestern Polytechnical UniversityXi’an 710072China Ningbo Institute of Northwestern Polytechnical University Ningbo 315103China

Polymer composites as thermal interface materials have been widely used in modern electronic *** this work,we report a novel method to prepare highly through-plane thermally conductive silicone rubber(SR)composites with vertically aligned silicon carbide fibers(VA-SiCFs)entangled by SiC nanowires(SiCNWs)***,a series of carbon fibers(CFs)skeletons were fabricated in sequence of coating poor thermally conductive polyacrylonitrile-based CFs with polydopamine,icetemplated assembly,and freeze-drying ***,VA-SiCFs networks,i.e.,long-range continuous SiCFs-SiCNWs networks,based on the prepared CFs skeletons,were in-situ obtained via template-assisted chemical vapor deposition *** thermal conductivity enhancement mechanism of VA-SiCFs networks on its SR composites was also intensively studied by finite element simulation,based on the first principles investigation of SiC,and Foygel’s *** in-situ grown VA-SiCFs networks possess high intrinsic thermal conductivity without the thermal interface between fillers,acting as the high-efficiency through-plane long-range continuous thermal conduction path,in which the SiCNWs were the in-plane“thermal spreader”.The VA-SiCFs/SR composites reached a high through-plane thermal conductivity,2.13 W/(m·K),at the filler loading of 15 vol.%,which is 868.2%,and 249.2%higher than that of pure SR sample,and random-CFs@polydopamine(PDA)/SR composites at the same content,*** VA-SiCFs/SR composites also exhibited good electrical insulation performance and excellent dimensional stability,which guaranteed the stable interfacial heat transfer of high-power density electronic devices.

关键词： silicon carbide fibers silicon carbide nanowires silicone rubber composites through-plane thermal conductivity first principles

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Interfacial engineering by multifunctional ruthenium complex for CsPbI_(2)Br perovskite solar cells with a fill factor over 0.82

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science China Materials 2024年第10期67卷 3245-3252页

作者： Shuai Chen Binxia Jia Depeng Chu Hua Li Jian Cui Wangen Zhao Zicheng Ding Kui Zhao Shengzhong(Frank)Liu Yaohong Zhang Guohua Wu Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationShaanxi Key Laboratory for Advanced Energy DevicesShaanxi Engineering Laboratory for Advanced Energy TechnologySchool of Materials Science and EngineeringShaanxi Normal UniversityXi’an 710119China School of Physics Northwest UniversityXi’an 710127China Qingdao Innovation and Development Base of Harbin Engineering University Harbin Engineering UniversityHarbin 150001China The Key Laboratory of Functional Molecular Solids Ministry of EducationWuhu 241002China

The interface is of paramount importance in heterostructures,as it can be considered as a device in accordance with Kroemer’s *** perovskite solar cells(PSCs),optimizing the interface between the perovskite layer and the hole transport layer is known to be an effective method for enhancing PSC device ***,a metal ruthenium complex coded as C101 is introduced to the perovskite(CsPbI_(2)Br)/hole transport layer(PTAA)interface as a“charge driven motor”to selectively extract holes from CsPbI_(2)Br and then transfer them to PTAA,minimizing the voltage loss in *** significantly,the introduction of C101 layer effectively passivates the surface of CsPbI_(2)Br film and reduces the defect density of CsPbI_(2)Br film due to the covalent bond between the CsPbI_(2)Br and the–C=O group in *** photovoltaic performance of CsPbI_(2)Br PSCs is enhanced by 23.60%upon the introduction of C101 interfacial layer,with the champion CsPbI_(2)Br PSC exhibiting a power conversion efficiency of 14.96%in a reverse scan,a short-circuit current of 15.84 mA·cm^(−2),an open-circuit voltage of 1.15 V,and a fill factor of 82.03%.Additionally,the introduction of C101 simultaneously enhances the humidity tolerance of CsPbI_(2)Br PSCs.

关键词： perovskite solar cells CsPbI_(2)Br interfacial engineering ruthenium complex multifunctional

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Pressure-induced cation and vacancy disorder-order transition and near-zero τ_f in deficient hexagonal perovskite Ba8ZnTa6O24 dielectrics

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science China Chemistry 2025年

作者： Bin Zheng Ruiwen Ji Cécile Genevois Wenda Zhang Xing Ming Qiang Zhang Mathieu Allix Congling Yin Xiaojun Kuang Xianran Xing MOE Key Laboratory of New Processing Technology for Nonferrous Metal and Materials Guangxi Key Laboratory of Optical and Electronic Materials and Devices College of Materials Science and Engineering Guilin University of Technology Centre National de la Recherche Scientifique (CNRS) CEMHTI UPR3079 Université d'Orléans College of Physics and Electronic Information Engineering Guilin University of Technology Neutron Scattering Division Oak Ridge National Laboratory Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources Guilin University of Technology Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials College of Chemistry and BioengineeringGuilin University of Technology Beijing Advanced Innovation Center for Materials Genome Engineering and Institute of Solid-State Chemistry University of Science and Technology Beijing

Pressure applications can enable the tuning of atomic/defect ordering and provide access to new functional materials. Here, we report that pressure-induced structural transformation featuring disorder-order transition of both cations and vacancies in the 8-layer deficient hexagonal perovskite tantalate dielectrics Ba8ZnTa6O24, which transformed the structure from twin to shift and remarkably lowered the temperature coefficient of resonant frequency τ_f down to near zero（～0.56 ppm/°C） from 38 ppm/°C for the twinned precursor. The atomic scale STEM-HAADF and EDS results confirm the ordering of Zn in the Ta host at the nanometer scale in the shifted material featuring well-ordered Ba8ZnTa6O24slabs intergrown with Ba3ZnTa2O9and Ba5Ta4O15monolayers and anti-phase grain boundaries as planar defects. The pressure-induced twin-shift structural transformation of Ba8ZnTa6O24features the rare constant concentration of the hexagonal stacked layers, which is allowed by the vacancy ordering at the central layers of face-shared octahedral（FSO） trimers avoiding the FSO B-B repulsion, and remarkably the faster cationic ordering kinetics compared with the 2:1 ordered complex perovskites. Although the inclusion of numerous planar defects and the oxidizable atomic defects led to significant p-type conduction and inhomogeneous electrical microstructures, resulting in an extraordinarily high extrinsic dielectric loss for the high-pressure shifted Ba8ZnTa6O24pellet, the intrinsically near-zero τ_fcould make the shifted Ba8ZnTa6O24perovskite an ideal microwave dielectric resonator candidate if the defects could be eliminated.

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