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materials Futures 2024年第2期3卷 1-35页

作者： Lixiu Zhang Yousheng Wang Xiangchuan Meng Jia Zhang Pengfei Wu Min Wang Fengren Cao Chunhao Chen Zhaokui Wang Fu Yang Xiaodong Li Yu Zou Xi Jin Yan Jiang Hengyue Li Yucheng Liu Tongle Bu Buyi Yan Yaowen Li Junfeng Fang Lixin Xiao Junliang Yang Fuzhi Huang Shengzhong Liu Jizhong Yao Liangsheng Liao Liang Li Fei Zhang Yiqiang Zhan Yiwang Chen Yaohua Mai Liming Ding Center for Excellence in Nanoscience(CAS) Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS)National Center for Nanoscience and TechnologyBeijing 100190People’s Republic of China Institute of New Energy Technology College of Information Science and TechnologyJinan UniversityGuangzhou 510632People’s Republic of China Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031People’s Republic of China School of Information Science and Technology Fudan UniversityShanghai 200433People’s Republic of China School of Chemical Engineering and Technology Tianjin UniversityTianjin 300072People’s Republic of China School of Physical Science and Technology Soochow UniversitySuzhou 215006People’s Republic of China Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123People’s Republic of China Institute of optoelectronics Fudan UniversityShanghai 200433People’s Republic of China College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123People’s Republic of China School of Physics and Electronic Science East China Normal UniversityShanghai 200241People’s Republic of China State Key Laboratory for Artificial Microstructure and Mesoscopic Physics Department of PhysicsPeking UniversityBeijing 100871People’s Republic of China College of Biophotonics South China Normal UniversityGuangzhou 510631People’s Republic of China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Physics and Electronics Central South UniversityChangsha 410083People’s Republic of China School of Materials Science and Engineering Shaanxi Normal UniversityXi’an 710119People’s Republic of China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Microquanta semiconductor Hangzhou 311121People’s Republic of China

Perovskite solar cells have aroused a worldwide research upsurge in recent years due to their soaring photovoltaic performance,ease of solution processing,and low *** power conversion efficiency record is constantly being broken and has recently reached 26.1%in the lab,which is comparable to the established photovoltaic technologies such as crystalline silicon,copper indium gallium selenide and cadmium telluride(CdTe)solar ***,perovskite solar cells are standing at the entrance of industrialization,where huge opportunities and risks ***,towards commercialization,challenges of up-scaling,stability and lead toxicity still remain,the proper handling of which could potentially lead to the widespread adoption of perovskite solar cells as a low-cost and efficient source of renewable *** review gives a holistic analysis of the path towards commercialization for perovskite solar cells.A comprehensive overview of the current state-of-the-art level for perovskite solar cells and modules will be introduced first,with respect to the module efficiency,stability and current status of *** will then discuss the challenges that get in the way of commercialization and the corresponding strategies to address them,involving the upscaling,the stability and the lead toxicity *** into the future direction of commercialization of perovskite photovoltaics was also provided,including the flexible perovskite cells and modules and perovskite indoor ***,the future perspectives towards commercialization are put forward.

关键词： commercializations perovskite solar cells state-of-the-art level challenges and perspectives indoor photovoltaics

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Prediction of protected band edge states and dielectric tunable quasiparticle and excitonic properties of monolayer MoSi_(2)N_(4)

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npj Computational materials 2022年第1期8卷 1216-1222页

作者： Yabei Wu Zhao Tang Weiyi Xia Weiwei Gao Fanhao Jia Yubo Zhang Wenguang Zhu Wenqing Zhang Peihong Zhang Department of Materials Science and Engineering and Shenzhen Institute for Quantum Science&engineering Southern University of Science and TechnologyShenzhenGuangdong518055China Guangdong Provincial Key Lab for Computational Science and Materials Design and Shenzhen Municipal Key Lab for Advanced Quantum Materials and DevicesSouthern University of Science and TechnologyShenzhenGuangdong518055China ICQD Hefei National Laboratory for Physical Science at the MicroscaleKey Laboratory of Strongly-Coupled Quantum Matter PhysicsChinese Academy of SciencesDepartment of Physicsand Synergetic Innovation Center of Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaHefeiAnhui230026China Department of Physics University at BuffaloState University of New YorkBuffaloNY14260USA Department of Physics Dalian University of TechnologyDalianLiaoning116024China International Centre for Quantum and Molecular Structures Materials Genome InstituteDepartment of PhysicsShanghai University99 Shangda RoadShanghai200444China

The electronic structure of two-dimensional(2D)materials are inherently prone to environmental perturbations,which may pose significant challenges to their applications in electronic or optoelectronic devices.A 2D material couples with its environment through two mechanisms:local chemical coupling and nonlocal dielectric screening *** local chemical coupling is often difficult to predict or control *** dielectric screening,on the other hand,can be tuned by choosing the substrates or layer thickness in a controllable ***,a compelling 2D electronic material should offer band edge states that are robust against local chemical coupling *** it is demonstrated that the recently synthesized MoSi_(2)N_(4)is an ideal 2D semiconductor with robust band edge states protected from capricious environmental chemical coupling *** many-body perturbation theory calculations are carried out to illustrate how the band edge states of MoSi_(2)N_(4)are shielded from the direct chemical coupling effects,but its quasiparticle and excitonic properties can be modulated through the nonlocal dielectric screening *** unique property,together with the moderate band gap and the thermodynamic and mechanical stability of this material,paves the way for a range of applications of MoSi_(2)N_(4)in areas including energy,2D electronics,and optoelectronics.

关键词： dielectric protected quasi

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High-dielectric-constant nanograin BaTiO_(3)-based ceramics for ultra-thin layer multilayer ceramic capacitors via grain grading engineering

Advanced Powder Materials

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advanced Powder materials 2022年第3期1卷 63-69页

作者： Chaoqiong Zhu Ziming Cai Xiuhua Cao Zhenxiao Fu Longtu Li Xiaohui Wang State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China School of Materials Science and Physics China University of Mining and TechnologyXuzhou 221116China State Key Laboratory of Advanced Materials and Electronic Components Guangdong Fenghua Advanced Technology Holding Co.LtdZhaoqingGuangdong 526000China

Four BT-based ceramic samples were prepared using a grain grading *** bigger-grained(~100 nm)and smaller-grained(~70 nm)BaTiO_(3)(BT)powders were *** smaller-grained BT powder controlled the average grain size and guaranteed the reliability,while the bigger-grained powder enhanced the dielectric *** percentages of bigger-grained BT powder were introduced to balance the average grain size and the dielectric *** the proportion of bigger grains increased,the dielectric constant(εr)improved *** room-temperatureεr of 25%bigger-grain mixed BT(2623)was~50%higher than that of the sample with a similar average grain size without grain *** ceramic mixed with 15%bigger-grained BT showed comprehensive dielectric performance,which met the EIA X5R standard and provided a considerableεr of 1841 along with a low dielectric loss of 0.78%.Notably,the average grain size was 90 nm,which favors the applications in ultra-thin multilayer ceramic capacitors.

关键词： Grain grading engineering Nanograin BaTiO_(3) Dielectric constant Reliability Multilayer ceramic capacitors

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Ultrathin 2D Metal–Organic Framework Nanosheets In situ Interpenetrated by Functional CNTs for Hybrid Energy Storage Device

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Nano-Micro Letters 2020年第4期12卷 1-13页

作者： Feitian Ran Xueqing Xu Duo Pan Yuyan Liu Yongping Bai Lu Shao MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and Environment(SKLUWRE)School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001People’s Republic of China Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002People’s Republic of China

The controllable construction of two-dimensional(2D)metal–organic framework(MOF)nanosheets with favorable electrochemical performances is greatly challenging for energy ***,we design an in situ induced growth strategy to construct the ultrathin carboxylated carbon nanotubes(C-CNTs)interpenetrated nickel MOF(Ni-MOF/C-CNTs)*** deliberate thickness and specific surface area of novel 2D hybrid nanosheets can be effectively tuned via finely controlling C-CNTs *** to the unique microstructure,the integrated 2D hybrid nanosheets are endowed with plentiful electroactive sites to promote the electrochemical performances *** prepared Ni-MOF/C-CNTs nanosheets exhibit superior specific capacity of 680 C g^−1 at 1 A g^−1 and good capacity *** assembled hybrid device demonstrated the maximum energy density of 44.4 Wh kg^−1 at a power density of 440 W kg^−*** novel strategy to construct ultrathin 2D MOF with unique properties can be extended to synthesize various MOF-based functional materials for diverse applications.

关键词： Metal–organic frameworks Carbon nanotubes Ultrathin 2D nanosheets Hybrid supercapacitor

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Design of Photothermal Covalent Organic Frameworks by Radical Immobilization

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CCS Chemistry 2022年第8期4卷 2842-2853页

作者： Xiaohui Tang Zhongxin Chen Qing Xu Yan Su Hong Xu Satoshi Horike Huanhuan Zhang Yuan Li Cheng Gu State Key Laboratory of Luminescent Materials and Devices Institute of Polymer Optoelectronic Materials and DevicesSouth China University of TechnologyGuangzhou 510640 CAS Key Laboratory of Low-Carbon Conversion Science and Engineering Shanghai Advanced Research Institute(SARI)Chinese Academy of Sciences(CAS)Shanghai 201210 Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084 Institute for Integrated Cell-Material Sciences Institute for Advanced StudyKyoto UniversityYoshidaSakyo-kuKyoto 606-8501 Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates South China University of TechnologyGuangzhou 510640

Covalent organic frameworks(COFs)characterized by structural diversity,face-to-face stacking and open channels exhibit unique advantages as photothermal materials but have rarely been applied in solar-driven water evaporation due to complicated framework design,tedious synthesis,and low solar-to-vapor ***,we report a materials design strategy to produce efficient and robust photothermal COF by anchoring nonemissive radicals to the pore surface by a[2+2]cycloaddition–retroelectrocyclization reaction.

关键词： covalent organic frameworks radicals photothermal conversion water evaporation

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Decorating Aramid Fibers with Chemically-Bonded Amorphous Tio2 for Improving Uv Resistance in the Simulated Extreme Environment

SSRN

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SSRN 2022年

作者： Chen, Fengxiang Zhai, Lisha Huang, Zhiyu Luo, Yuxin Yang, Huiyu Xing, Tonghe He, Annan Yu, Zhenwei Liu, Jie Zhang, Xiaofang Xu, Weilin State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 China Beijing Advanced Innovation Center for Biomedical Engineering Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry Beihang University Beijing100191 China State Key Laboratory of Bio-Fibers and Eco-Textiles Qingdao University Qingdao266071 China

Aramid fiber holds a great potential application in harsh environments like defense and aerospace due to outstanding integrated properties, but it still falls short in poor UV resistance and surface inertness. It is an intriguing but challenging task to obtain high anti-UV efficiency for aramid fiber without compromising the mechanical characteristics. Herein, a uniform and thickness-controlled amorphous TiO 2 coating layer is chemically-bonded onto aramid fiber surfaces via a modified atomic layer deposition (mALD) strategy. In contrast to bare aramid fiber with poor UV resistance and greatly suppressed mechanical performance, the modified aramid fibers with 1000 ALD cycles possesses well-preserved mechanical strength and flexibility. Moreover, they exhibit 54.08% retention of initial tenacity even exposure to UV irradiation with intensity of 4260 W/m 2 at high temperature ( > 200 °C) for 360 min (equals to continuous exposure to strong sunlight irradiation for about 7.5 years), simultaneously retain the excellent laundering durability and lustrousness, demonstrating a significant enhancement in anti-UV efficiency. Such highly anti-UV fibers fabricated by a facile mALD strategy provide a new perspective on designing multifunctional fibers and devices for future innovative applications. © 2022, The Authors. All rights reserved.

关键词： Aramid fibers

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Ni-Mof Decorated Carbon Nanotubes Encapsulated Ni Nanoparticles for Robust C-N and H-O Bonds Cleavage

SSRN

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SSRN 2023年

作者： Xie, Yuhua Xiong, Tiantian Li, Chen Shi, Han Zhou, Cong Luo, Fang Li, Chunsheng Sun, Yan Yang, Zehui Sustainable Energy Laboratory Faculty of Materials Science and Chemistry China University of Geosciences Wuhan 388 Lumo RD Wuhan430074 China College of Materials Science and Engineering State Key Laboratory of New Textile Materials & Advanced Processing Technology Wuhan Textile University Wuhan430200 China School of Chemistry and Life Sciences Suzhou University of Science and Technology Jiangsu Province Suzhou City215009 China Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China Suzhou University of Science and Technology Jiangsu Province Suzhou City215009 China Zhejiang Institute China University of Geosciences Hangzhou311305 China

In this work, we report a robust bifunctional electrocatalyst composed of Ni-MOF and nitrogen doped carbon nanotubes encapsulated Ni nanoparticles (Ni-MOF@Ni-NCNT) for C-N and H-O bonds dissociation. Due to the presence of Ni-NCNT, adsorption of OH- species is enhanced and CO2 binding strength is simultaneously weakened leading to a boosted urea oxidation reaction performance reflected by decrement in potential at 100 mA cm-2 by 69 mV. The loosened binding strength with CO2 specie is highlighted by in-situ electrochemical impedance spectroscopy (EIS) test and DFT calculation. Moreover, the alkaline hydrogen evolution reaction (HER) performance of Ni-MOF@Ni-NCNT is better than Ni-MOF and Ni-NCNT evidenced by the overpotential at 50 mA cm-2 decreased by 224 mV and 900 mV ascribed to the synergistic effect, in which Ni-MOF, Ni nanoparticles and Ni-Nx-C facilitates water adsorption, dissociation and adsorption/combination of hydrogen ions, respectively. The assembled HER-UOR system requires only 1.33 V to reach 10 mA cm-2, 70 mV lower than water splitting driven by Pt/C-IrO2. © 2023, The Authors. All rights reserved.

关键词： Urea

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Solvent Volume Expansion Inhibition During Freeze Casting and its Application in Composite Solid Lithium Electrolytes

SSRN

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SSRN 2023年

作者： Gong, Ming Liang, Ying Li, keyang Guo, Chuangjie Zhao, Xiaohuan Liang, Jie Huang, Yilun Zhao, Ming Dong, Yanhao Ren, Yaoyu Zhuang, Daming Nan, Ce-Wen Gong, Qianming School of Materials Science and Engineering Tsinghua University Beijing100084 China Key Laboratory for Advanced Materials Processing Technology Ministry of Education Beijing100084 China State Key Laboratory of New Ceramics and Fine Processing Beijing100084 China School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing100081 China SINOPEC Beijing Research Institute of Chemical Industry Beijing100013 China

Composite solid electrolytes hold the promise to enable all-solid-state lithium-ion batteries to be practicable. One critical issue is the construction of uniform porous ceramic framework. The work proposed an innovative freeze casting-based technology to construct porous ceramic framework of Li1+xAlxGe2−x(PO4)3 (LAGP), which was further composited with polymeric electrolytes to assemble full cells. The pore structure of the ceramic framework was effectively tuned by the ratio of mixed water-ethanol solvents, which could offset the volume expansion of water during freeze casting, benefit powder compact and sintering, and thus improved the quality of the composite solid electrolytes. The unique solvent composition design strategy provided ample opportunity for microstructural modification and the suppression of short-circuiting lithium dendrites, as demonstrated by the improvement of critical current density and phase field modeling. This work offers new perspectives on creating different pore structure free of residual stress or volume expansion once freeze casting technique is adopted. © 2023, The Authors. All rights reserved.

关键词： Pore structure

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Enabling highly efficient and broadband electromagnetic wave absorption by tuning impedance match in high-entropy transition metal diborides (HETMB_(2))

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Journal of advanced Ceramics 2021年第6期10卷 1299-1316页

作者： Weiming ZHANG Fu-Zhi DAI Huimin XIANG Biao ZHAO Xiaohui WANG Na NI Rajamallu KARRE Shijiang WU Yanchun ZHOU Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China Henan Key Laboratory of Aeronautical Materials and Application Technology School of Material Science and EngineeringZhengzhou University of AeronauticsZhengzhou 450046China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Key Lab of Education Ministry for Power Machinery and Engineering School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China Zibo Firststar New Material Incorporated Co. Ltd.Zibo 255000China

The advance in communication technology has triggered worldwide concern on electromagnetic wave *** cope with this challenge,exploring high-performance electromagnetic(EM)wave absorbing materials with dielectric and magnetic losses coupling is urgently *** the EM wave absorbers,transition metal diborides(TMB2)possess excellent dielectric loss ***,akin to other single dielectric materials,poor impedance match leads to inferior ***-entropy engineering is expected to be effective in tailoring the balance between dielectric and magnetic losses through compositional ***,three HE TMB2 powders with nominal equimolar TM including HE TMB2-I(TM=Zr,Hf,Nb,Ta),HE TMB2-2(TM=Ti,Zr,Hf,Nb,Ta),and HE TMB2-3(TM=Cr,Zr,Hf,Nb,Ta)have been designed and prepared by one-step boro/carbothermal *** a result of synergistic effects of strong attenuation capability and impedance match,HE TMB2-1 shows much improved performance with the optimal minimum reflection loss(RL_(min))of-59.6 dB(8.48 GHz,2.68 mm)and effective absorption bandwidth(EAB)of 7.6 GHz(2.3 mm).Most impressively,incorporating Cr in HE TMB2-3 greatly improves the impedance match over 1-18 GHz,thus achieving the RLmin of-56.2 dB(8.48 GHz,2.63 mm)and the EAB of 11.0 GHz(2.2 mm),which is superior to most other EM wave absorbing *** work reveals that constructing high-entropy compounds,especially by incorporating magnetic elements,is effectual in tailoring the impedance match for highly conductive compounds,i.e.,tuning electrical conductivity and boosting magnetic loss to realize highly efficient and broadband EM wave absorption with dielectric and magnetic coupling in single-phase materials.

关键词： transition metal diboride(TMB2) high-entropy(HE)ceramics electronic structure microwave absorption dielectric and magnetic losses coupling

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Enhanced Mechanical Property and Flame Retardancy of Halogen-Free Pe/Eva Composites Through Crosslinking and Carbon Fiber Inclusion

SSRN

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SSRN 2024年

作者： Du, Ao Chen, Hongmei Chen, Jie Wang, Bo Cai, Zeyun Qiu, Huajun Xie, Guoqiang Shenzhen518055 China Shenzhen Joywind New Materials Co. Ltd Shenzhen518109 China State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin150001 China Shenzhen Key Laboratory of Advanced Functional Carbon Materials Research and Comprehensive Application Harbin Institute of Technology Shenzhen518055 China Shenzhen518055 China

Due to the exceptional flame retardancy, environmental protection, cost-effectiveness and ease of processing, halogen-free flame-retardant polyethylene composites are attracting wide attention. However, the addition of halogen-free flame retardants usually leads to significantly decreased mechanical properties of polyethylene composites, which greatly limits its application. Herein, we report a halogen-free flame-retardant polyethylene/ethylene-vinyl acetate copolymer composite (PE/EVA) with excellent flame retardancy and mechanical properties by combining compatibilizer, crosslinking agent and carbon fiber. The presence of compatibilizer not only improves the compatibility of halogen-free flame retardants and matrix, but also interacts with the crosslinking agent to form a cladding structure on the surface of carbon fiber. The enhanced interaction between carbon fiber surface and matrix then results in significantly enhanced flame retardancy and mechanical properties of the composite. Specifically, adding 4 phr compatibilizer, 0.5 phr crosslinking agent and 10 phr carbon fiber will lead to the halogen-free flame-retardant PE/EVA composite with a UL-94 V1 rating and an increased tensile strength by 84.02% reaching 19.12 MPa. Moreover, further carbon fiber surface modification can further enhance the flame retardancy of the composite probably due to a synergistic flame-retardant effect caused by the surface modified nitrogen and silicon elements. As a result, the composite achieves a UL-94 V0 rating with well-retained high tensile strength of 15.19 MPa. This work provides a practical strategy for enhancing the flame retardancy and mechanical property of polyethylene-based composite simultaneously. © 2024, The Authors. All rights reserved.

关键词： Polyethylenes

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