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Liquid-liquid interface‐assisted growth of two‐dimensional organic semiconductor single crystals:Mechanisms,properties,and applications

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Information ＆ functional Materials 2024年第2期1卷 220-241页

作者： Jinwen Wang Tingyi Yan Lingyun Li Zheng Ren Xiujuan Zhang Jiansheng Jie Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhouJiangsuChina Jiangsu Key Laboratory for Carbon‐Based Functional Materials&Devices Soochow UniversitySuzhouJiangsuChina Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow UniversitySuzhouJiangsuChina Macao Institute of Materials Science and Engineering MUST‐SUDA Joint Research Center for Advanced Functional MaterialsMacao University of Science and TechnologyTaipaMacaoChina

Two‐dimensional organic semiconductor single crystals(2D OSSCs)represent the promising candidates for the construction of high‐performance electronic and optoelectronic devices due to their ultrathin thicknesses,free of grain boundaries,and long‐range ordered molecular *** recent years,substantial efforts have been devoted to the fabrication of the large‐sized and layer‐controlled 2D OSSCs at the liquid‐liquid *** unique interface could act as the molecular flat and defect‐free substrate for regulating the nucleation and growth processes and enabling the formation of large‐sized ultrathin 2D ***,this review focuses on the liquid-liquid interface‐assisted growth methods for the controllable preparation of 2D OSSCs,with a particular emphasis on the advantages and limitations of the corresponding ***,the typical methods employed to control the crystal sizes,morphologies,structures,and orientations of 2D OSSCs at the liquid-liquid interface are discussed in ***,the recent progresses on the 2D OSSCs‐based optoelectronic devices,such as organic field‐effect transistors,ambipolar transistors,and phototransistors are ***,the key challenges and further outlook are proposed in order to promote the future development of the 2D OSSCs in the field of the next‐generation organic optoelectronic devices.

关键词： ambipolar transistors liquid‐liquid interface‐assisted growth organic field‐effect transistors organic phototransistors two‐dimensional organic semiconductor single crystal

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Y_5Si_3C and Y_3Si_2C_2: Theoretically predicted MAX phase like damage tolerant ceramics and promising interphase materials for SiC_f/SiC composites

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Journal of Materials science & technology 2019年第3期35卷 313-322页

作者： Yanchun Zhou Huimin Xiang Fu-Zhi Dai Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials & Processing Technology

Researching for interphase materials that can protect SiC fibers from oxygen and water vapor attacks has become one of the most important issues for the applications of SiC_f/SiC composites in high-temperature combustion environment. However, such kinds of interphase materials are not available yet. Herein,we report theoretically predicted properties of two promising interphase materials Y_5Si_3 C and Y_3Si_2C_*** crystallizing in different structures, they share the common features of layered structure,anisotropic chemical bonding, anisotropic electrical and mechanical properties, and low shear deformation resistance. The bulk moduli for Y_5Si_3C and Y_3Si_2C_2 are 78 and 93 GPa, respectively; while their shear moduli are 52 and 50GPa, respectively. The maximum to minimum Young's modulus ratios are1.44 for Y_5Si_3C and 3.27 for Y_3Si_2C_2. Based on the low shear deformation resistance and low Pugh's ratios(G/B = 0.666 forY_5Si_3C and 0.537 for Y_3Si_2C_2; G: shear modulus; B: bulk modulus), they are predicted as damage tolerant and soft ceramics with predicted Vickers hardness of 9.6 and 6.9 GPa, *** cleavage plane and possible slip systems are(000 l) and(0001)[1120] and(1010)[0001] forY_5Si_3C,and those for Y_3Si_2C_2 are {h00} and(010)[101]. Since the oxidation products are water-vapor resistant Y2 Si2 O7, Y2 SiO5 and/or Y_2 O_3 upon oxidation, and the volume expansions are ca 140% and ca 26% for Y_5Si_3C and Y_3Si_2C_2, they are expected to seal the interfacial cracks in SiC_f/SiC composites. The unique combination of easy cleavage, low shear deformation resistance, volume expansions upon oxidation, and the resistance of the oxidation products to water vapor attack warrant them promising as interphase materials of SiC_f/SiC composites for water-vapor laden environment applications.

关键词： Y5Si3C Y3Si2C2 Interphase material Damage tolerant ceramics Electronic structure

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Air-Stable Li_(2)C_(6)O_(6) and Li_(4)C_(6)O_(6) as High-Efficiency Lithium Compensation Additives in Cathode

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Energy Material Advances 2024年第1期5卷 78-86页

作者： Mengyan Cao Bingyun Ma Simeng Zhang Huajun Li Hang Chu Yurui Gao Tao Cheng Xuefeng Wang Xueliang Sun Zhaoxiang Wang Liquan Chen Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100190China Institute of Functional Nano and Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123China Eastern Institute for Advanced Study Eastern Institute of TechnologyNingboZhejiang 315200China Laboratory of Theoretical and Computational Nanoscience National Center for Nanoscience and TechnologyChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Tianmu Lake Institute of Advanced Energy Storage Technologies Co.Ltd. Liyang 213300China Department of Mechanical and Materials Engineering University of Western OntarioLondonOntario N6A 3K7Canada

The continuous lithium consumption during cycling severely reduces the energy density of the lithium battery,and thus,lithium compensation is ***,Li_(x)C_(6)O_(6)(x=2,4)was proposed as an air-stable high-efficiency sacrificial additive in the cathode to compensate for the lost lithium ions in solid-state lithium *** a delithiation(oxidation)potential as low as 3.8 V,Li_(2)C_(6)O_(6) can release most of its Li^(+)ions(294.8 mAh g^(−1) in theory).Similarly,Li_(4)C_(6)O_(6) is also characteristic of low oxidation potential and high delithiation capacity(547.8 mAh g^(−1) in theory).The feasibility of using Li_(x)C_(6)O_(6) as the self-sacrificial additive in the cathode was verified with the marked increase of the initial charge capacity of the Li||LiFePO_(4)(half)cells and the initial discharge capacity of Cu||LiFePO_(4)(full)cells,and the improved electrolyte/cathode interface stability and interface contact,in the solid-state poly(ethylene oxide)-lithium bis(trifluoromethane)sulfonimide(PEO-LiTFSI)*** addition,the structure and delithiation of Li_(x)C_(6)O_(6) and the impacts of its decomposition product on the PEO-LiTFSI solid electrolyte were also evaluated on the basis of the comprehensive physical characterizations and the density functional theory(DFT)*** findings open a new avenue for elevating the energy density and/or elongate the lifespan of the solid-state secondary batteries.

关键词： electrolyte cathode interface stability LixC O lithium ions solid state lithium batteries lithium compensation air stable additives density functional theory lithium batteryand

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Oxidation behavior of Mo-Si-B alloys at medium-to-high temperatures

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Journal of Materials science & technology 2021年第1期60卷 113-127页

作者： Kunming Pan Yanping Yang Shizhong Wei Honghui Wu Zhili Dong Yuan Wu Shuize Wang Laiqi Zhang Junping Lin Xinping Mao Henan Key Laboratory of High-temperature Structural and Functional Materials National Joint Engineering Research Center for Abrasion Control and Molding of Metal MaterialsHenan University of Science and TechnologyLuoyang 471003China Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China School of Materials Science and Engineering Nanyang Technological UniversitySingapore State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China

Continuous exploration of high-temperature structural materials is being driven by the needs of gasturbine engines capable of withstanding the high-temperature *** low melting points of currently applied superalloys restrain the further improvement of service tempe *** higher melting tempe ratures above 2000℃,Mo-Si-B alloys are regarded as a new generation of ultrahightemperature structural ***,oxidation is a concern for the industrial application of Mo-Si-B ***,an in-depth understanding of the oxidation mechanisms may contribute to solving this issue,whereas relevant reviews about their recent advances are *** the current work,a comprehensively systematic review about the oxidation behaviors of Mo-Si-B alloys is described for this purpose.

关键词： Mo-Si-B alloys Oxidation resistance Alloying and modification Enhancement

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Emergent symmetry in quantum phase transition:From deconfined quantum critical point to gapless quantum spin liquid

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science Bulletin 2024年第2期69卷 190-196页

作者： Wen-Yuan Liu Shou-Shu Gong Wei-Qiang Chen Zheng-Cheng Gu Department of Physics The Chinese University of Hong KongHong KongChina Division of Chemistry and Chemical Engineering California Institute of TechnologyPasadena CA 91125USA School of Physical Sciences Great Bay UniversityDongguan 523000China Great Bay Institute for Advanced Study Dongguan 523000China Department of Physics and Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices Southern University of Science and TechnologyShenzhen 518055China

The emergence of exotic quantum phenomena in frustrated magnets is rapidly driving the development of quantum many-body physics,raising fundamental questions on the nature of quantum phase *** we unveil the behaviour of emergent symmetry involving two extraordinarily representative phenomena,i.e.,the deconfined quantum critical point(DQCP)and the quantum spin liquid(QSL)*** large-scale tensor network simulations,we study a spatially anisotropic spin-1/2 square-lattice frustrated antiferromagnetic(AFM)model,namely the J1x-J1y-J2 model,which contains anisotropic nearestneighbor couplings J1x,J1y and the next nearest neighbor coupling *** small J1y/J1x,by tuning J2,a direct continuous transition between the AFM and valence bond solid phase is *** growing J1y/J1x,a gapless QSL phase gradually emerges between the AFM and VBS *** observe an emergent O(4)symmetry along the AFM–VBS transition line,which is consistent with the prediction of DQCP *** surprisingly,we find that such an emergent O(4)symmetry holds for the whole QSL–VBS transition line as *** findings reveal the intrinsic relationship between the QSL and DQCP from categorical symmetry point of view,and strongly constrain the quantum field theory description of the QSL *** phase diagram and critical exponents presented in this paper are of direct relevance to future experiments on frustrated magnets and cold atom systems.

关键词： Tensor network Quantum phase transition Emergent symmetry Quantum spin liquid Deconfined quantum critical point Anisotropic

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Optical,thermal and luminescence properties of La2O3-Ga2O3-ZrO2 glasses co-doped with Tm3+/Yb3+prepared by containerless technique

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Journal of Rare Earths 2022年第11期40卷 1706-1714,I0002页

作者： Jiansheng Xie Minghui Zhang Yanzhuo Wang Rongting Guo Ying Shi Xiuhong Pan Xuechao Liu Kun Chen Meibo Tang Feng Wu Zhihong Zhang School of Materials Science and Engineering Shanghai UniversityShanghai 200444China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Wuhan Institute of TechnologyWuhan 430205China College of Chemical and Biological Engineering Guilin University of TechnologyGuangxi Key Laboratory of Electrochemical and Magneto-chemical Functional MaterialsGuilin 541004China AECC-Chengdu Chengdu 610500China

Bulk LaO-GaO-ZrO(LGZ)glass and Tm/Ybco-doped LGZ glasses were synthesized successfully using containerless *** spectra result reveals that the matrix sample possesses the low maximum phonon energy of~642 *** glasses show good compatibility between large Abbe numbers(>31)and high refractive indices(n>1.93).Moreover,transmittance measurements reflect that the glasses have high infrared transmittance of-81.9%,small OHabsorption coefficient and long mid-infrared cut-off wavelengths(-7.5μm).The surface morphology of host glass was characterized by scanning electron microscopy(SEM)micrograph and energy dispersive spectroscopy(EDS)tests reflect that the doped compositions are distributed into the matrix glass *** results of thermal analysis show that the glasses have good thermal properties(T>769℃).Excited by 980 am laser,an intense 1810 am fluorescence is obtained originating from the transition:~3 E→~3 Hof Tmion,accompanied by upconversion *** can be observed that 1810 nm fluorescence has the highest intensity at 1 mol%YbOand owns broad full width at half-maximum(>245 nm),the luminescence intensity of~3 F→~3 Htransition increases with rising temperature from 300 to 550 ***,the value of energy transfer efficiency shows that Ybcan transfer energy to *** fitting the attenuation curves,the lifetimes of 1810 and 474 nm emission can be acquired.

关键词： Containerless technique Lanthanum gallate glass Thermal analysis Luminescence Rare earth ions

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Achieving strong microwave absorption capability and wide absorption bandwidth through a combination of high entropy rare earth silicide carbides/rare earth oxides

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Journal of Materials science & technology 2020年第12期47卷 216-222页

作者： Heng Chen Biao Zhao Zifan Zhao Huimin Xiang Fu-Zhi Dai Jiachen Liu Yanchun Zhou Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjin 300072China Henan Key Laboratory of Aeronautical Materials and Application Technology School of Material Science and EngineeringZhengzhou University of AeronauticsZhengzhou 450046China

Developing electromagnetic(EM) wave absorbing materials with low reflection coefficient and optimal operating frequency band is urgently needed on account of the increasingly serious EM pollution. However, the applications of common EM absorbing materials are encumbered by poor high-temperature stability, poor oxidation resistance, narrow absorption bandwidth or high density. Herein, the strong EM absorption capability and wide efficient absorption bandwidth of high entropy ceramics are reported for the first time, which are designed by a combination of the novel high entropy(HE) rare earth silicide carbides/rare earth oxides(RE3 Si2 C2/RE2 O3). Three HE powders, i.e., HERSC-1(HE(Tm0.2 Y0.2 Dy0.2 Gd0.2 Tb0.2)3 Si2 C2),HERSC-2 HE(Tm0.2 Y0.2 Dy0.2 Gd0.2 Tb0.2)3 Si2 C2/HE(Tm0.2 Y0.2 Dy0.2 Gd0.2 Tb0.2)2 O3) and HERSC-3(HE(Tm0.2 Y0.2 Dy0.2 Gd0.2 Tb0.2)3 Si2 C2/HE(Tm0.2 Y0.2 Dy0.2 Gd0.2 Tb0.2)2 O3), are synthesized. Although HERSC-1 exhibits a limited absorption effect(the minimum reflection loss(RLmin) is-11.6 d B at 3.4 mm) and a relatively narrow effective absorption bandwidth(EAB) of 1.7 GHz, the optimal absorption RLminvalue and EAB of HERSC-2 and HERSC-3 are-40.7 d B(at 2.9 mm), 3.4 GHz and-50.9 d B(at 2.0 mm), 4.5 GHz,respectively, demonstrating strong microwave absorption capability and wide absorption *** the better stability, low density and strong EM absorption effect, HE ceramics are promising as a new type of EM absorbing materials.

关键词： High entropy ceramics Rare earth silicide carbides Absorption materials Reflection loss Interfacial polarization

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Mechanical Properties and Thermal Shock Resistance of SrAl_(2)Si_(2)O_(8) Reinforced BN Ceramic composites

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无机材料学报 2024年第10期39卷 1182-1188页

作者： WANG Bo CAI Delong ZHU Qishuai LI Daxin YANG Zhihua DUAN Xiaoming LI Yanan WANG Xuan JIA Dechang ZHOU Yu International Joint Laboratory of Advanced Nanomaterials of Heilongjiang Province College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China Key Laboratory of Advanced Structural-Functional Integration Materials School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China China Resources Cement Technology R&D Co. LtdGuangzhou 510000China The First Military Representative Office of the Army Equipment Department in Beijing Beijing 100072China The Fourth System Design Department Fourth AcademyChina Aerospace Science and Industry Corporation LimitedBeijing 100048China School of Materials Science and Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055China

Hexagonal boron nitride(h-BN)ceramics have become exceptional materials for heat-resistant components in hypersonic vehicles,owing to their superior thermal stability and excellent dielectric ***,their densification during sintering still poses challenges for researchers,and their mechanical properties are rather *** this study,SrAl_(2)Si_(2)O_(8)(SAS),with low melting point and high strength,was introduced into the h-BN ceramics to facilitate the sintering and reinforce the strength and ***,BN-SAS ceramic composites were fabricated via hot press sintering using h-BN,SrCO_(3),Al_(2)O_(3),and SiO_(2) as raw materials,and effects of sintering pressure on their microstructure,mechanical property,and thermal property were *** thermal shock resistance of BN-SAS ceramic composites was *** show that phases of as-preparedBN-SAS ceramic composites are h-BN and h-SrAl_(2)Si_(2)O_(8).With the increase of sintering pressure,the composites’densities increase,and the mechanical properties shew a rising trend followed by a slight *** a sintering pressure of 20 MPa,their bending strength and fracture toughness are(138±4)MPa and(1.84±0.05)MPa·m^(1/2),*** sintered at 10 MPa exhibit a low coefficient of thermal expansion,with an average of 2.96×10^(-6) K^(-1) in the temperature range from 200 to 1200℃.The BN-SAS ceramic composites prepared at 20 MPa display higher thermal conductivity from 12.42 to 28.42 W·m^(-1)·K^(-1) within the temperature range from room temperature to 1000℃.Notably,BN-SAS composites exhibit remarkable thermal shock resistance,with residual bending strength peaking and subsequently declining sharply under a thermal shock temperature difference ranging from 600 to 1400℃.The maximum residual bending strength is recorded at a temperature difference of 800℃,with a residual strength retention rate of 101%.As the thermal shock temperature difference increase,the degree of oxida

关键词： BN matrix composite hot-press sintering mechanical property thermal shock resistance service reliability

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Facile synthesis of Ni-,Co-,Cu-metal organic frameworks electrocatalyst boosting for hydrogen evolution reaction

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Journal of Materials science & technology 2021年第13期72卷 172-179页

作者： Man Zhang Di Hu Zhenhao Xu Biying Liu Mebrouka Boubeche Zuo Chen Yuchen Wang Huixia Luo Kai Yan Guangdong Provincial Key Laboratory of Environmental Pollution and Remediation Technology School of Environmental Science and EngineeringSun Yat-sen UniversityGuangzhou 510275China Key Lab of Polymer Composite&Functional Materials School of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou510275China

The conductive metal-organic frameworks(MOFs)are suggested as the ideal electrocatalysts for hydrogen evolution reaction(HER)because of the high utilization of metal *** design and facile synthesis of MOFs with large specific surface area,proper metals as center,and tunable chemical components is still full of ***,we report the facile synthesis three types of porous MOFs by regulating metal center using benzene-1,3,5-tricarboxylic acid(H3 BTC)as organic ligand and have successfully synthesized the rhombic octahedral Cu-BTC,rod-shaped Co-BTC and spherical Ni-BTC materials with large specific surface area ranged in 350-500 m^(2)g^(-1).These as-prepared MOFs materials exhibit high performance of HER in 0.5 M H_(2)SO_(4).Ni-BTC material exhibits the lowest overpotential of 53 mV at 10 mA cm-2 and the smallest Tafel slope of 62 mV dec^(-1)than those of Cu-BTC(270 mV,155 mV dec^(-1))and Co-BTC(123 mV,100 mV dec^(-1)),which are much superior to these previously reported MOFs *** addition,the fast catalytic kinetic of Ni-BTC was confirmed by the smaller charge transfer resistance(Rct)value of 0.9Ωand larger electrochemical active surface area(ECSA)of 35.5 cm^(2)than those of Cu-BTC(8.2Ω,22.5 cm^(2))and Co-BTC(1.9Ω,27.7 cm^(2)).Because of the structural advantage and large ECSA,the turnover frequency(TOF)value of Ni-BTC reaches up to 0.041 s-1 at 120 mV overpotential,which is 20.5 and 2.6 times greater than that of Cu-BTC(0.002 s-1)and Co-BTC(0.016 s-1).Besides,these three types of MOFs exhibited excellent durability over 12 *** study unfolds diverse insights into the design and facile synthesis of MOFs for electrochemical energy conversion system.

关键词： Metal-organic frameworks Hydrogen evolution reaction Activity Overpotential Durability

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Research prospects of graphene-based catalyst for seawater electrolysis

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Materials Futures 2023年第4期2卷 80-97页

作者： Xinyu Li Yingjie Liu Yanhui Feng Yunwei Tong Zhenbo Qin Zhong Wu Yida Deng Wenbin Hu Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education Tianjin University Tianjin 300072People’s Republic of China Key Laboratory of Composite and Functional Materials School of Material Science and Engineering Tianjin UniversityTianjin 300072People’s Republic of China State Key Laboratory of Marine Resource Utilization in South China Sea School of Materials Science and EngineeringHainan UniversityHaikou 570228People’s Republic of China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New CityFuzhou 350207People’s Republic of China

Seawater has obvious resource reserve advantages compared to fresh water,and so the huge potential advantages for large-scale electrolysis of hydrogen production has been paid more attention to;but at the same time,electrolysis of seawater requires more stable and active catalysts to deal with seawater corrosion ***-based materials are very suitable as composite supports for catalysts due to their high electrical conductivity,specific surface area,and ***,the review introduces the problems faced by seawater electrolysis for hydrogen production and the various catalysts *** them,the advantages of catalysis of graphene-based catalysts and the methods of enhancement the catalytic performance of graphene are ***,the development direction of composite catalysts is prospected,hoping to provide guidance for the preparation of more efficient electrocatalysts for seawater electrolysis.

关键词： graphene seawater electrolysis catalyst

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