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Strain engineering in electrocatalysis:Strategies,characterization,and insights

Nano Research 2024年第5期17卷 3603-3621页

作者： Qibo Deng Peng Xu Hassanien Gomaa Mohamed A.Shenashen Sherif A.El-Safty Cuihua An Li-Hua Shao Ning Hu School of Mechanical Engineering Hebei University of TechnologyTianjin 300401China Department of Chemistry Faculty of ScienceAl-Azhar University71524AssiutEgypt Department of Petrochemical Egyptian Petroleum Research Institute(EPRI)Nasr City11727CairoEgypt Center for Functional Materials National Institute for Materials Science(NIMS)1-2-1 SengenTsukubaIbaraki-ken305-0047Japan State Key Laboratory of Reliability and Intelligence Electrical Equipment Key Laboratory of Advanced Intelligent Protective Equipment TechnologyMinistry of Educationand School of Mechanical EngineeringHebei University of TechnologyTianjin 300401China National Key Laboratory of Strength and Structural Integrity Institute of Solid MechanicsSchool of Aeronautic Science and EngineeringBeihang UniversityBeijing100191China Advanced Equipment Research Institute Co. Ltd.of HEBUTTianjin 300401China

Strain engineering,as a cutting-edge method for modulating the electronic structure of catalysts,plays a crucial role in regulating the interaction between the catalytic surface and the adsorbed *** electrocatalytic performance is influenced by the electronic structure,which can be achieved by introducing the external forces or stresses to adjust interatomic spacing between surface *** challenges in strain engineering research lie in accurately understanding the mechanical impact of strain on *** paper first introduces the basic strategy for generating the strain,summarizes the different strain generation forms and their advantages and *** progress in researching the characterization means for the lattice strains and their applications in the field of electrocatalysis is also ***,the challenges of strain engineering are introduced,and an outlook on the future research directions is provided.

关键词： strain electrocatalysis characterization chemical reaction kinetics lattice mismatch

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Demonstration of 420GHz highly scaled InAlN/GaN HEMTs by Electron Beam Lithography 7

Demonstration of 420GHz highly scaled InAlN/GaN HEMTs by Ele...

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7th International Workshop on Advanced Patterning Solutions, IWAPS 2023

作者： He, Jiaheng Cheng, Zhe Li, Chengcheng Xie, Shujie Wu, Xuankun Zhang, Lian Wu, Chang Zhang, Yun Laboratory of Solid State Optoelectronics Information Technology Institute of Semiconductors Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China Hubei Jiufengshan Laboratory Wuhan China

ISBN: (纸本)9798350344547

GaN-based high electron mobility transistors (HEMTs) are promising candidates for millimeter wave amplifiers above 100 GHz for 6G communications. To satisfy those requirements, a maximum oscillation frequency (fmax) surpassing 400 GHz is essential, necessitating the deployment of advanced down-scaling and patterning technologies. Through the utilization of electron beam lithography, ultra-scaled InAlN/GaN HEMTs on sapphire with T-gates with gate length of60 nm and source-drain distance of300 nm were fabricated, reaching fmax over 420 GHz with a corresponding fTexceeding 150 GHz. To the best of the author's knowledge, these scaled HEMTs exhibit the highest fmax among reported HEMTs on sapphire. © 2023 IEEE.

关键词： High electron mobility transistors

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High-Temperature Lubrication Performance of Naphthalenamine-Based Ionic Liquids in Ester Oil

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Langmuir 2025年第21期41卷 13144-13155页

作者： Shang, Xiaogang Zhang, Yisheng Zhang, Songwei Yang, Huimin Hu, Litian State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China School of Chemistry and Chemical Engineering Inner Mongolia University of Science & Technology Baotou 014010 China Qingdao Center of Resource Chemistry & New Materials Qingdao 266u071 China

Two types of N-(4-Octylphenyl)-1-naphthalenamine (OPANA)-based ionic liquids (ILs) were successfully synthesized, demonstrating excellent thermal stability and oil miscibility in pentaerythritol ester oil (PE oil). The ILs can significantly improve the antiwear and antioxidant performance of PE oil. Combined with SEM, EDS, and XPS analyses, the findings indicate that ILs adsorb and react with the worn surface to form a tribo-film, effectively reducing the wear of steel balls. Additionally, ILs are dynamically balanced in PE oil, generating free OPANA to effectively eliminate free radicals produced during high-temperature processes, significantly enhancing the antioxidation performance of PE oil. This study presents a methodology for developing multifunctional additives to improve the use of ILs in industrial lubrication. © 2025 American Chemical Society.

关键词： Synthesis (chemical)

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solid-electrolyte interphases for all-solid-state batteries

ChemPhysMater

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ChemPhysMater 2025年第1期4卷 9-29页

作者： Yu Xia Xu Han Yue Ji Simeng Zhang Saiqi Wei Yue Gong Junyi Yue Yueyue Wang Xiaona Li Zhiqiang Fang Changtai Zhao Jianwen Liang National Power Battery Innovation Center GRINM Group Co.Ltd.Beijing 100088China Solid State Batteries Research Center GRINM(Guangdong)Institute for Advanced Materials and TechnologyFoshan 528051China China Automotive Battery Research Institute Co. Ltd.Beijing 100088China General Research Institute for Nonferrous Metals Beijing 100088China Eastern Institute for Advanced Study Eastern Institute of TechnologyNingbo 315200China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Key Laboratory of Automobile Materials of Ministry of Education&School of Materials Science and Engineering Nanling CampusJilin UniversityChangchun 130025China China FAW Corporation Limited Changchun 130013China

Interfacial engineering,particularly the design of artificial solid-electrolyte interphases(SEIs),has been successfully applied in all-solid-state batteries(ASSLBs)for industrial ***,a fundamental understanding of the synthesis and mechanism models of artificial SEIs in all-solid-state Li-ion batteries remains *** this review,recent advances in designing and synthesizing artificial SEIs for ASSLBs to solve interfacial issues are thoroughly discussed,covering three main preparation methods and their technical routes:1)atomic layer deposition,2)sol-gel methods,and 3)mechanical ball-milling ***,advanced ex-situ characterization techniques for artificial SEIs are comprehensively ***,this review provides perspectives on techniques for the interface engineering of artificial SEIs for ASSLBs,with focus on promising methods for industrial applications.

关键词： All-solid-state lithium batteries Interfacial engineering solid-electrolyte interphase Atomic layer deposition Sol-gel Mechanical ball-milling

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[(CrGe_(9))Cr_(2)(CO)_(13)]^(4-): A disubstituted case of ten-vertex closo cluster with spherical aromaticity

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Chinese Chemical Letters 2022年第4期33卷 2139-2142页

作者： Ya-Shan Huang Dandan Chen Jun Zhu Zhong-Ming Sun State Key Laboratory of Elemento-Organic Chemistry Tianjin Key Lab of Rare Earth Materials and ApplicationsSchool of Material Science and EngineeringNankai UniversityTianjin 300350China State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials(iChEM)College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

We report the first disubstituted hetero-ten-vertex closo cluster [(CrGe_(9))Cr_(2)(CO)_(13)]^(4-)with three adjacent Cr(CO);units adopting both η^(5) and η^(1) coordination modes,which was synthesized through the reaction of "KGe;" with(MeCN)_(3)Cr(CO)_(4)and Cr(CO)_(6)in ethylenediamine(en) *** contrast to the η^(1)-Cr atoms forming localized two-center two-elelctron(2 c-2 e) Cr-Ge bonds,the hetero atom η^(5)-Cr exhibits versatile bonding mechanisms including three 5 c-2 e and five 8 c-2 e delocalized bonds which account for Hückel *** multi-center bonding patterns delineate the multiple local σ-aromatic characters of the title cluster displaying explicit spherical aromaticity.

关键词： Hetero-ten-atom clusters Closo structure Functionalization Multi-center bonding Spherical aromaticity

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Regulating the Deposition of Insoluble Sulfur Species for Room Temperature Sodium-Sulfur Batteries

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Chemical Research in Chinese Universities 2022年第1期38卷 128-135页

作者： WANG Chaozhi CUI Jingqin FANG Xiaoliang ZHENG Nanfeng Pen-Tung Sah Institute of Micro-Nano Science and Technology State Key Laboratory for Physical Chemistry of Solid SurfacesCollaborative Innovation Center of Chemistry for Energy MaterialsNational&Local Joint Engineering Research Center for Preparation Technology of NanomaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005P.R.China Fujian Science&Technology Innovation Laboratory for Energy Materials of China Xiamen 361005P.R.China

Room temperature sodium-sulfur(RT-Na-S) batteries are regarded as promising candidates for next-generation high-energy-density batteries. However, in addition to the severe shuttle effect, the inhomogeneous deposition of the insoluble sulfur species generated during the discharge/charge processes also contributes to the rapid capacity fade of RT-Na-S batteries. In this work, the deposition behavior of the insoluble sulfur species in the traditional slurry-coated sulfur cathodes is investigated using microporous carbon spheres as model sulfur host materials. To achieve uniform deposition of insoluble sulfur species, a self-supporting sulfur cathode fabricated by assembling microporous carbon spheres is designed. With homogeneous sulfur distribution and favorable electron transport pathway, the self-supporting cathode delivers remarkably enhanced rate capability(509 mA·h/g at 2.5 C, 1 C=1675 mA/g), cycling stability(718 mA·h/g after 480 cycles at 0.5 C) and areal capacity(4.98 mA·h/cm2 at 0.1 C), highlighting the great potential of manipulating insoluble sulfur species to fabricate high-performance RT-Na-S batteries.

关键词： Sodium sulfur battery Polysulfide Discharge/charge product High sulfur loading Stable cycling

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Alkyl-thiophene-alkyl linkers to construct double-cable conjugated polymers for single-component organic solar cells

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Chinese Chemical Letters 2024年第1期35卷 542-546页

作者： Wenbin Lai Safakath Karuthedath Chengyi Xiao Lei Meng Frédéric Laquai Weiwei Li Yongfang Li Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Beijing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China King Abdullah University of Science and Technology(KAUST) KAUST Solar Center(KSC)Physical Sciences and Engineering Division(PSE)Material Science and Engineering Program(MSE)Thuwal 23955-6900Kingdom of Saudi Arabia University of Chinese Academy of Sciences Beijing 100049China Institute of Materials Research Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China

In this work,semirigid linkers of the alkyl-thiophene-alkyl structure are developed to construct double-cable *** alkyl units,propyl(C3H6),hexyl(C6H12),and dodecyl(C12H24),are applied as semirigid linkers,yielding three double-cable polymers:PBC6-T,PBC12-T,and PBC24-T,***12-T which uses C6H12-thiophene-C6H12 linkers is found to exhibit the best device efficiency of 5.56%,while PBC6-T and PBC24-T with shorter or longer linkers yield device efficiencies of only 2.65%and 1.09%in single-component organic solar cells(SCOSCs).Further studies reveal that PBC12-T exhibits higher crystallinity and improved charge transport,resulting in better *** work provides an approach to construct double-cable conjugated polymers with long alkyl linkers,and it shows the importance of the linker length for the photovoltaic performance of SCOSCs.

关键词： Double-cable conjugated polymer Single-component organic solar cell Crystallinity Semirigid linkers Alkyl-thiophene-alkyl

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Optical facet coatings for high-performance LWIR quantum cascade lasers atλ∼8.5μm

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红外与毫米波学报 2024年第4期43卷 497-502页

作者： MA Yuan LIN Yu-Zhe WAN Chen-Yang WANG Zi-Xian ZHOU Xu-Yan ZHANG Jin-Chuan LIU Feng-Qi ZHENG Wan-Hua Laboratory of Solid-State Optoelectronics Information Technology Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Weifang Academy of Advanced Opto-Electronic Circuits Weifang 261021China

We report on the performance improvement of long-wave infrared quantum cascade lasers(LWIR QCLs)by studying and optimizing the anti-reflection(AR)optical facet *** to the Al2O3 AR coat⁃ing,the Y_(2)O_(3)AR coating exhibits higher catastrophic optical mirror damage(COMD)level,and the optical facet coatings of both material systems have no beam steering effect.A 3-mm-long,9.5-μm-wide buried-heterostruc⁃ture(BH)LWIR QCL ofλ~8.5μm with Y_(2)O_(3)metallic high-reflection(HR)and AR of~0.2%reflectivity coating demonstrates a maximum pulsed peak power of 2.19 W at 298 K,which is 149%higher than that of the uncoated *** continuous-wave(CW)operation,by optimizing the reflectivity of the Y_(2)O_(3)AR coating,the maximum output power reaches 0.73 W,which is 91%higher than that of the uncoated device.

关键词： quantum cascade lasers long-wave infrared optical facet coatings catastrophic optical mirror damage

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A passive temperature regulator

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National science Open 2024年第6期3卷 12-25页

作者： Jinlei Li Tengyao Jiang Yan Song Yi Jiang Peiru Shi Ning Xu Zhenhui Lin Bin Zhu Gang Tan Jia Zhu National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsFrontiers Science Center for Critical Earth Material CyclingCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China School of Environmental Science and Engineering Nanjing Tech UniversityNanjing 211816China College of Civil Engineering and Architecture Zhejiang UniversityHangzhou 310058China School of Sustainable Energy and Resources Nanjing UniversitySuzhou 215163China

Maintaining stable temperatures is crucial for civilization,but it typically requires substantial energy consumption,contributing to significant carbon *** advancements in passive heating/cooling technologies,achieving purely passive temperature regulation in volatile environments remains a challenge due to the temporal mismatch between heating/cooling demand and passive power ***,we demonstrate a passive temperature regulator that balances the power demand and supply through a tailored sandwich structure,integrating the functionalities of harvesting,storage,and release of passive solar heat and space *** experiments demonstrate that the regulator maintains a target temperature for 96%(71%)of the testing period in winter(summer).Compared to conventional solar absorbers(radiative coolers),the regulator saves 56%(30%)of energy across 31 cities worldwide in achieving stable *** regulator represents an important advancement in passive temperature regulation with minimized carbon footprint and shows attractive prospects both on Earth and in outer space.

关键词： energy-saving technology passive temperature stabilization solar thermal conversion radiative cooling

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Study of the Oxygen Defects Influence on Optoelectronic Properties of Single-Walled Carbon Nanotubes

Study of the Oxygen Defects Influence on Optoelectronic Prop...

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2024 International Conference Laser Optics, ICLO 2024

作者： Paukov, M.I. Chiglintsev, E.O. Krasnikov, D.V. Komandin, G.A. Gavdush, A.A. Brekhov, K.A. Chernov, A.I. Nasibulin, A.G. Zaitsev, K.I. Arsenin, A.V. Volkov, V. Burdanova, M.G. Moscow Institute of Physics and Technology Center for Photonics and 2D Materials Dolgoprudny Russia Center for Photonics Science and Engineering Skoltech Moscow Russia Prokhorov Institute of General Physics Ras Moscow Russia Rtu Mirea Moscow Russia Russian Quantum Center Russia Osypian Institute of Solid State Physics Chernogolovka Russia

ISBN: (纸本)9798350390674

In this research, we aim to quantitatively study the changes in optoelectronic properties of single-walled carbon nanotubes (SWCNTs) induced by defects. We employ various spectroscopic techniques, including Raman spectroscopy, UV-vis-NIR absorbance spectroscopy, Fourier-transform infrared spectroscopy (FTIR), THz time domain spectroscopy, and nonlinear terahertz spectroscopy. By analyzing the spectroscopic data, we strive to establish empirical relationships between the observed parameters and the concentration of oxygen defects. Our findings can be applied to predict and control the optoelectronic behavior of SWCNTs in various applications © 2024 IEEE.

关键词： Terahertz spectroscopy

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