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SSRN 2022年

作者： Yu, Shitao Lv, Fanglin Jiang, Long Ji, Renjie Jia, Zhen Zhang, Jingyun Liu, Mingya Liu, Shiwei Li, Lu Liu, Yue State Key Laboratory Base of Eco-chemical Engineering College of Chemical Engineering Qingdao University of Science and Technology 53 Zhengzhou Road Qingdao266042 China CAS Key Laboratory of Bio-based Materials Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao266101 China AVIC Research Institute for Special Structures of Aeronautical Composites 19 Jiqi Road Jinan250000 China Shandong Linyi Sunny Wealth Chemicals Company Limited Shandong Linyi276000 China

Electromagnetic wave absorbing materials usually had the problems of wide thickness, poor absorption performance and narrow band width. This is the deficiency in practical application In the paper, a dual-core-shell absorbing material was prepared by using silica as the middle shell, ferrite as the carbon layer was the core layer and the carbon layer was the outer laye (Fe 3 O 4 @SiO 2 @C). By adjusting shell thickness, the best absorbing property can be obtained. In particular, silica layer was used as the intermediate to combine its absorbing achieve better impedance matching performance, adjusted the shell thickness to achieve better absorbing performance, For a sample with a matching thickness of 4 mm, the minimum reflection loss was - 36.4 dB and the maximum effective bandwidth is 5.8 GHz. which can be used as an excellent absorbing material. © 2022, The Authors. All rights reserved.

关键词： Silica

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Synthesis of Fe3o4@Sio2@C Microspheres for Enhanced Electromagnetic Wave Absorption

SSRN

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SSRN 2022年

作者： Lv, Fanglin Yu, Shitao Jiang, Long Ji, Renjie Jia, Zhen Zhang, Jingyun Liu, Mingya Liu, Shiwei Li, Lu Liu, Yue State Key Laboratory Base of Eco-chemical Engineering College of Chemical Engineering Qingdao University of Science and Technology 53 Zhengzhou Road Qingdao266042 China CAS Key Laboratory of Bio-based Materials Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao266101 China AVIC Research Institute for Special Structures of Aeronautical Composites 19 Jiqi Road Jinan250000 China Shandong Linyi Sunny Wealth Chemicals Company Limited Shandong Linyi276000 China

关键词： Electromagnetic wave absorption

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Coexistence of nontrivial topological properties and strong ferromagnetic fluctuations in quasi-one-dimensional A_(2)Cr_(3)As_(3)

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npj Computational Materials 2020年第1期6卷 1413-1420页

作者： Chenchao Xu Ninghua Wu Guo-Xiang Zhi Bing-Hua Lei Xu Duan Fanlong Ning Chao Cao Qijin Chen Department of Physics Zhejiang University310027 HangzhouChina CAS Key Laboratory of Functional Materials and Devices for Special Environments Xinjiang Technical Institute of Physics and ChemistryCASXinjiang Key Laboratory of Electronic Information Materials and Devices40-1 South Beijing Road830011 UrumqiChina Condensed Matter Group Department of PhysicsHangzhou Normal University311121 HangzhouChina Westlake University HangzhouZhejiangChina Department of Physics Fudan UniversityShanghaiChina Collaborative Innovation Center of Advanced Microstructures Nanjing University210093 NanjingChina Shanghai Branch National Laboratory for Physical Sciences at Microscale and Department of Modern PhysicsUniversity of Science and Technology of China201315 ShanghaiChina

Superconductivity in crystals without inversion symmetry has received extensive attention due to its unconventional pairing and possible nontrivial topological *** first-principles calculations,we systemically study t... 详细信息

关键词： properties nontrivial topological

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Unsteady Coupled Heat Transfer Simulation of Unsteady numerical simulation of slot flow in anti-heating tile

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IOP Conference Series: Earth and Environmental science 2021年第2期651卷

作者： Qiang Wang Wei Li Yongtao Yao School of Energy and Power North University of China Taiyuan China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin China

An unsteady coupled heat transfer solver is developed in the study. The coupled solver, solving the partial differential equations for fluid flow and thermal conduction in the solid, is employed to predict the unsteady heat and transfer in the anti-heating tile. The influence of gap depth on the fluid flow and solid thermal conduction is studied. The results show that the flow field distribution between the different gap depths is similar, otherwise reducing the gap depth is conducive to reducing the thermal load in the bottom plate.

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Infrared radiation and thermal transfer performance of ultra-black CNT/diamond composite

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Diamond and Related Materials 2025年 156卷

作者： Feng, Xurui Yang, Zhiliang Yuan, Xiaolu Liu, Peng Guo, Jing Qiu, Chao Chen, Liangxian Liu, Jinlong Song, Shuangxi Li, Chengming Wei, Junjun Institute for Advanced Materials and Technology University of Science and Technology Beijing Beijing100083 China School of Mechanical Engineering University of Science and Technology Beijing Beijing100083 China Beijing Zhenxing Institute of Metrology and Testing Beijing100072 China State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai200240 China

This study fabricated vertical carbon nanotube (CNT)/diamond ultra-black composites via microwave plasma chemical vapor deposition. Quantitative nanoscratch tests revealed significantly enhanced interfacial adhesion between CNTs and the diamond substrate (200 μN) compared to the Si substrate (60 μN), demonstrating a 233 % adhesion improvement. In contrast to CNT/diamond without a pretreatment process (CNT/diamond (O), 200 μN), notably, Fe/diamond substrate subjected to pretreatment achieved a further 100 % adhesion of CNTs enhancement (400 μN), attributed to the formation of high-strength bonds at the Fe/diamond interface. Fourier-transform infrared spectroscopy characterization revealed exceptional radiative properties, with the composite achieving an average emissivity of 0.96 across the infrared spectrum (6–16 μm) and a 167 % improvement in emissivity stability relative to CNT/diamond (O). High-resolution infrared thermographic analysis confirmed superior thermal response characteristics of the CNT/diamond composite relative to CNT/Si. Therefore, the CNT/diamond composite demonstrates promising potential for precision radiation-calibration blackbody applications. © 2025 Elsevier B.V.

关键词： Fourier transform infrared spectroscopy

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Amorphous Zr-MOFs derived high-quality ZrC nanoparticles to prepare ZrC ceramics

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Journal of the European Ceramic Society 2025年第12期45卷

作者： Yuqiang Liang Hongzhi Cheng Yujie Zhang Junyang Jin Yang Wang Jian Gu Jian Yang Yinsheng Li College of Materials Science and Engineering Nanjing Tech University Nanjing 211816 China Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites Nanjing 211816 China Zhejiang Key Laboratory of Data-Driven High-Safety Energy Materials and Applications Ningbo Key Laboratory of Special Energy Materials and Chemistry Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China

A novel amorphous Zr-MOFs (aZMs) was synthesized using ZrCl 4 and C 10 H 6 O 8 , with deionized water and ethanol as solvents. ZrC nanoparticles were successfully synthesized by pyrolyzing aZMs precursors via one-step thermal decomposition. Effects of metal/linker molar ratios and pyrolysis temperatures on the composition and microstructure of ZrC powders were investigated, meanwhile, the synthesis mechanisms were also discussed. High-purity spherical ZrC nanoparticles (104.2 ± 21.5 nm) were obtained by pyrolyzing the aZMs with metal/linker molar ratio of 2 at 1500 °C. Notably, additive-free dense ZrC ceramic were fabricated using precursor-derived ZrC nanoparticles at 1900 °C for 1 h with a pressure of 30 MPa by SPS, achieving a high relative density (96.2 %) and Vickers hardness (15.9 GPa). Compared with commercially available ZrC ceramic (93.3 %, 12.79 GPa), the as-sintered ZrC ceramic exhibited better sinterability and higher hardness. This work provides a promising potential for use in fabricating ZrC-based ultra-high temperature ceramics and composites.

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In situ grown bifacial graphene stabilizes composite electrode for efficient perovskite solar cells

Research Square

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Research Square 2021年

作者： Lin, Xuesong Su, Hongzhen He, Sifan Song, Yenan Wang, Yanbo Qin, Zhenzhen Wu, Yongzhen Yang, Xudong Han, Qifeng Fang, Junfeng Grätzel, Michael Han, Liyuan State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University Shanghai200240 China Special Division of Environmental and Energy Science Komaba Organization for Educational Excellence College of Arts and Sciences University of Tokyo Tokyo153-8902 Japan Engineering Research Center for Nanophotonics and Advanced Instrument Ministry of Education School of Physics and Materials Science East China Normal University Shanghai200241 China Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry and Molecular Engineering East China University of Science and Technology Shanghai200237 China Lausanne Switzerland

Instability of rear electrodes undermines the long-term operational durability of efficient perovskite solar cells (PSCs). Here, a composite electrode of copper-nickel (Cu-Ni) alloy stabilized by in situ grown bifacial graphene is designed. The alloying makes the work function of Cu suitable for regular PSCs and Cu-Ni is the ideal substrate for preparing high-quality graphene via chemical vapor deposition, which simultaneously protects the device from oxygen, water and internal components reaction. To rivet the composite electrode with semi-device, a thermoplastic copolymer is employed as an adhesive layer during hot pressing. The resultant device achieved power conversion efficiency of 24.34% with significantly improved stability;the devices without encapsulation retained 97% of their initial efficiency after the damp heat test at 85oC with relative humidity of 85% for 1440 hours and the encapsulated devices maintained 95% of their initial efficiencies after maximum power point tracking under continuous 1 sun illumination for 5000 hours. © 2021, CC BY.

关键词： Nickel alloys

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Study on the compatibility of modified cyanate ester resin in liquid oxygen

SPE Polymers

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SPE Polymers 2020年第1期1卷 45-54页

作者： Fu, Gang Jiao, Weicheng Wang, Guan Gao, Tanling Wu, Jianwei Shao, Nan Wei, Yun Zhao Kuang, Hong He, Xiaodong Wang, Rongguo Institute of Petrochemistry Heilongjiang Academy of Sciences Heilongjiang Harbin China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Heilongjiang Harbin China Institute of Advanced Marine Materials Key Laboratory of Superlight Materials & Surface Technology Ministry of Education College of Materials Science and Chemical Engineering Harbin Engineering University Heilongjiang Harbin China

A cyanate ester (CE) resin co-modified with epoxy (EP) and bismaleimide (BMI) as the continuous phase, and phenolphthalein poly (ether sulfone) (PES-C) as the dispersed phase were used for developing liquid oxygen (LOX) composite tanks. Gaseous oxygen (GOX) anti-oxidation, LOX impact sensitivity, ductility, and cycle durability is a critical index for materials in LOX applications. Added components significantly improved material ductility at low temperature versus neat CE resin because of microstructure changes. However, improvement in thermal resistance was not achieved without tradeoffs;the addition of BMI improved thermal resistance but decreased durability. The failure mechanism of a tank containing GOX was related to reaction with oxygen. LOX impact sensitivity (IRS) is associated with anti-oxidation and flaming retardance of the samples. Micro-domains tended to separate from the continuous phase more during the LOX impact test versus the GOX test and was accompanied by increasing ductility and anti-oxidation. Cycle durability was affected more by the difference in coefficient of thermal expansion between the continuous and PES-C phases rather than immersion time. In summary, CE resin (CYEP6BM5) co-modified with PES-C, EP, and BMI showed good LOX compatibility including IRS value of 2%, 19 cycles durability, and flaming retardance of UL94V0 and may be applied for LOX composite tanks. © 2020 The Authors. SPE Polymers published by Wiley Periodicals LLC on behalf of Society of Plastics Engineers.

关键词： anti-oxidation cyanate ester low temperature cycles LOX compatibility toughening

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Reconstructing the Coordination Environment of Fe/Co Dual-atom Sites towards Efficient Oxygen Electrocatalysis for Zn–Air Batteries

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Angewandte Chemie 2024年第7期137卷

作者： Hengqi Liu Jinzhen Huang Kun Feng Rui Xiong Shengyu Ma Ran Wang Prof. Qiang Fu Moniba Rafique Prof. Zhiguo Liu Prof. Jiecai Han Daxing Hua Prof. Jiajie Li Prof. Jun Zhong Prof. Xianjie Wang Prof. Zhonglong Zhao Tai Yao Prof. Sida Jiang Prof. Ping Xu Prof. Zhihua Zhang Prof. Bo Song National Key Laboratory of Laser Spatial Information Harbin Institute of Technology Harbin 150001 China School of Physics Harbin Institute of Technology Harbin 150001 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150001 China Electrochemistry Laboratory Paul Scherrer Institute CH-5232 Villigen PSI Switzerland Institute of Functional Nano and Soft Materials Laboratory Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Soochow University Suzhou 215123 China School of future technology Harbin Institute of Technology Harbin 150001 China School of Materials Science and Engineering University of Jinan Jinan 250022 China School of Physical Science and Technology Inner Mongolia University Hohhot 010021 China National Key Laboratory of Space Environment and Matter Behaviors Harbin Institute of Technology Harbin 150001 China State Key Laboratory of Space Power-Sources School of Chemistry Chemical Engineering Harbin Institute of Technology Harbin 150001 China School of Materials Science Engineering Dalian Jiaotong University Dalian 116028 China Laboratory for Space Environment and Physical Sciences Frontiers Science Center for Matter Behave in Space Environment Harbin Institute of Technology Harbin 150001 China Zhengzhou Research Institute Harbin Institute of Technology Zhengzhou 450046 China

Dual-atom catalysts with nitrogen-coordinated metal sites embedded in carbon can drive the oxygen reduction and evolution reactions (ORR/OER) in rechargeable zinc–air batteries (ZABs), and the further improvement is limited by the linear scaling relationship of intermediate binding energies in the absorbate evolution mechanism (AEM). Triggering the lattice oxygen mechanism (LOM) is promising to overcome this challenge, but has yet been verified since the lacking of bridge oxygen (O) in the rigid coordination environment of the metal centers. Here, we demonstrate that suitably tailored dual-atom catalysts of FeCo−N−C can undergo out-plane and in-plane reconstruction to form the both axial O and bridge O at the metal centers, and thus activate the LOM pathway. The tailored FeCo−N−C with shortened Fe−N bonds also favors the ORR process, therefore is a promising dual-atom oxygen catalyst. The assembled rechargeable ZABs demonstrate a peak power density of 332 mW cm −2 , and exhibit no notable decline after ~720 h of continuous cycling.

关键词： Tailoring coordination environment lattice oxygen mechanism oxygen evolution reaction oxygen reduction reaction rechargeable zinc–air batteries

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Effect of cold rolling on the microstructure and plastic deformation behavior of Ti41Zr32Ni6Ta7Be14 metallic glass matrix composites

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Journal of Alloys and Compounds 2025年 1032卷

作者： Fan, Jing Yan, Zhijie Eckert, Jürgen Rao, Wei Qiao, Junwei Zhou, Diaoyu School of Materials Science and Engineering North University of China Taiyuan030051 China Shanxi Key Laboratory of Advanced Metal Materials for Special Environments North University of China Taiyuan030051 China Erich Schmid Institute of Materials Science Austrian Academy of Sciences Leoben8700 Austria Department of Materials Science Montanuniversität Leoben Leoben8700 Austria Department of Engineering Mechanics Beijing University of Technology Beijing100124 China College of Materials Science and Engineering Taiyuan University of Technology Taiyuan030024 China

Ti41Zr32Ni6Ta7Be14 metallic glass matrix composites (MGMCs) were subjected to large plastic deformation via cold rolling. The microstructure of the cold-rolled MGMCs was characterized microscopically. Nanoindentation tests were conducted to investigate the hardness, Young's modulus, compressive strength, and work-hardening exponent of the cold-rolled Ti41Zr32Ni6Ta7Be14 MGMCs. It is found that profuse stacking faults (SFs), twins, and nanocrystalline structures are generated within the dendrites due to cold rolling, prohibiting rapid propagation of detrimental shear bands in the glass matrix, thereby enhancing the plastic deformation of the Ti41Zr32Ni6Ta7Be14 MGMCs. The present work highlights the ductile deformation mechanisms of MGMCs, which is of scientific importance for their engineering applications. © 2025 Elsevier B.V.

关键词： Plastic flow

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