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A Lightweight, Adhesive, Dual-Functionalized Over-Coating Interphase Toward Ultra-Stable High-Current Density Lithium Metal Anodes

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Energy & Environmental materials 2021年第1期4卷 103-110页

作者： Shaowen Li yue ma Bingqing Wei State Key Laboratory of Solidification Processing Centre for Nano Energy Materials School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072 China Department of Mechanical Engineering University of DelawareNewark DE19716 USA

Coherent manipulation of the lithium plating pattern is at the heart of the safe operation of metallic anodes in the battery technologies. In this article,a lightweight (~0.3 mg cm^(-2)), dual-functionalized carbon spheres are anchored onto the Cu foil as the interfacial protective layer via the chelation process of the catechol groups in the polydopamine precursor and the copper foil. The dual-functionalized carbon spheres exhibit the intriguing complementary features:Lithiophilic nitrogen dopants favor the Li+ion absorption and mitigate the nucleation barrier, while the micro/mesopore reservoir spatially homogenizes the ion flux distribution, confining the metallic propagation without dendrite-like protrusions. The metallic anode exhibits an ultra-stable plating/stripping process for 1 400 hr with the average Coulombic efficiency of ~99%. A full-cell prototype is constructed by pairing the N-doped carbon spheres on the bare Cu (NCS-Cu) electrode with the high-mass-loading LiVPO4F (12.5 mg cm^(-2)) cathode that can deliver a high energy density of 421.2 Wh kg^(-1) with the highest power density of 2106 W kg^(-1) to promise the anode use for high-power/energy-dense metallic batteries.

关键词： dual-functionalized carbon spheres hierarchical porosity lightweight protective layer metallic anode polydopamine

Sintering behavior and thermal conductivity of Y_(2)O_(3) fully stabilized HfO_(2) ceramics

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Rare Metals 2021年第5期40卷 1255-1266页

作者： Chun Li Jian He yue ma School of materials Science and Engineering Beihang UniversityBeijing 100191China School of Energy and Power Engineering Beihang UniversityBeijing 100191China Key Laboratory of High-Temperature Structural materials and Coatings Technology(Ministry of Industry and Information Technology) Beihang UniversityBeijing 100191China

A series of Y_(2)O_(3) fully stabilized HfO2 ceramics(Hf_(1-x)Y_(x)O_(2-0.5x),x=0.20,0.24,0.28,0.32,0.36 and 0.40)were synthesized by solid-state reaction at 1500℃.The phase composition,thermal conductivity and sintering behavior at 1400℃ of the ceramic bulks were *** Hf_(1-x)Y_(x)O_(2-0.5x) ceramics were comprised of pure cubic phase with disordered fluorite *** phase transformation occurred in the ceramics with Y3+doping concentration ranging from 0.24 to *** Hf_(0.64)Y_(0.36)O_(1.82) and Hf_(0.6)Y_(0.4)O_(1.8) samples revealed the lowest grain growth rate when sintered at 1400℃,indicating good resistance to ***,the Vicker’s hardness and Young’s modulus after annealed for 96 h at 1400℃ for the Hf_(0.64)Y_(0.36)O_(1.82) sample were 8.97 and 200 GPa,respectively,much lower than those of the Hf_(0.6)Y_(0.4)O_(1.8)(14.51 and 237 GPa,respectively).The thermal conductivity of Hf_(1-x)Y_(x)O_(2-0.5x) first decreased and then increased slowly as the Y3+content increased,and the associated mechanism was discussed.

关键词： Yttria fully stabilized hafnia Sintering Mechanical properties Thermal conductivity

Optimizing the crystallinity and acidity of H-SAPO-34 by fluoride for synthesizing Cu/SAPO-34 NH_3-SCR catalyst

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Journal of Environmental Sciences 2016年第3期28卷 244-251页

作者： Jing ma Zhichun Si Xiaodong Wu Duan Weng yue ma The Key Laboratory of Advanced materials of Ministry of Education School of Materials Science and EngineeringTsinghua University Advanced materials Institute Graduate School at ShenzhenTsinghua University

A series of H-SAPO-34 zeolites were synthesized by a hydrothermal method in fluoride *** as-synthesized H-SAPO-34 zeolites were characterized by X-ray diffraction（XRD）,scanning electron microscopy（SEM）,N_2 physisorption,temperature-programmed desorption of NH_3（NH_3-TPD） and nuclear magnetic resonance（NMR） *** results showed that a certain concentration of F- anions promoted the nucleation and crystallization of *** H-SAPO-34 synthesized in the fluoride media showed high crystallinity,uniform particle size distribution,large specific surface area and pore volume,and enhanced ***,Cu/SAPO-34 based on the fluoride-assisted zeolite showed a broadened temperature window for the selective catalytic reduction of NO by NH_3（NH_3-SCR） reaction due to the enhanced acidity of the zeolite and the improved dispersion of copper species.

关键词： H-SAPO-34 Fluoride media Crystallinity Acidity Selective catalytic reduction(SCR)of NO

Precipitation behavior and properties of extruded 7136 aluminum alloy under different aging treatments

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Chinese Journal of Aeronautics 2021年第2期34卷 612-619页

作者： Huiyan LI Lina JIA Jiangnan HUANG yue ma School of materials Science and Engineering Beihang UniversityBeijing 100083China

In this work, the mechanical properties and electrical conductivity of the extruded 7136 aluminum alloy treated by single-stage aging treatment(T6), retrogression and re-aging treatment(RRA), and multiple retrogression and re-aging treatment have been investigated by means of hardness measurements, electrical conductivity tests and tensile tests. The results have shown that the properties of the 7136 alloy such as hardness, tensile strength and electrical conductivity were sensitive to retrogression time(within 90 min). With prolonging the retrogression time, the tensile strength was enhanced first and then decreased, yet the electrical conductivity was continuously increased. The 60 min-treated alloy performed the highest tensile strength(716 MPa), whereas the 90 min-treated alloy possessed the highest electrical conductivity(33.95%IACS). Compared with the T6-treated alloy, the tensile strength and electrical conductivity were improved by 3.3%and 18.9%, respectively. The electrical conductivity showed an obvious increase with repetitious times of the RRA treatment. After 3 RRA60 treatment, a good combination of tensile strength(705 MPa) and electrical conductivity(33.20%IACS) can be obtained. Compared with the T6 condition, the tensile strength and electrical conductivity were improved by 1.7% and 16.3%, respectively. The mechanism of microstructure evolution under different aging treatments has been discussed in detail.

关键词： 7136 aluminum alloy Electrical conductivity Mechanical properties Microstructure Retrogression and re-aging

Ion migration in halide perovskite solar cells:Mechanism,characterization,impact and suppression

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Journal of Energy Chemistry 2021年第12期30卷 528-549,I0013页

作者： Huachao Zai yue ma Qi Chen Huanping Zhou Beijing Key Laboratory for Theory and Technology of Advanced Battery materials Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationBIC-ESATSchool of Materials Science and EngineeringPeking UniversityBeijing 100871China Beijing Key Laboratory of Construction Tailorable Advanced Functional materials and Green Applications Experimental Center of Advanced MaterialsSchool of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China

Metal halide perovskites are emerging as the most promising candidate for the next-generation Photovoltaics(PV)materials,due to their superior optoelectronic properties and low ***,the resulting Perovskite solar cells(PSCs)suffer from poor *** particular,the temperature and light activated ionic defects within the perovskite lattice,as well as electric-field-induced migration of ionic defects,make the PSCs unstable at operating condition,even with device *** is no doubt that the investigation of ion migration is crucial for the development of PSCs with high intrinsic *** this review,we first briefly introduce the origin and pathways of ion migration,and also the essential characterization methods to identify ion ***,we discuss the impact of ion migration on the perovskite films and cells with respect to photoelectric properties and ***,several representative strategies to suppress ion migration are systematically summarized in the context of composition engineering,additive engineering and interface engineering,with an in-depth understanding on the underlying mechanisms which may provide more clues for further fabrication of PSCs with improved ***,a perspective with some suggestion on future research directions and chemical approaches are provided to alleviate ion migration in perovskite materials and the entire devices.

关键词： Ion migration Perovskite Solar cell Defect Stability

Requirement-driven remote sensing metadata planning and online acquisition method for large-scale heterogeneous data

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Geo-Spatial Information Science 2022年第2期25卷 169-181页

作者： Shuang Wang Guoqing Li Wenyang Yu yue ma Aerospace Information Research Institute Chinese Academy of SciencesBeijingChina School of Electronic Electrical and Communication EngineeringUniversity of Chinese Academy of SciencesBeijingChina

Remote sensing data acquisition is one of the most essential processes in the field of Earth ***,traditional methods to acquire data do not satisfy the requirements of current applications because large-scale data processing is *** address this issue,this paper proposes a data acquisition framework that carries out remote sensing metadata planning and then realizes the online acquisition of large amounts of ***,this paper establishes a unified metadata cataloging model and realizes the catalog of metadata in a local ***,a coverage calculation model is presented,which can show users the data coverage information in a selected geographical region under the data requirements of a specific ***,according to the data retrieval results and the coverage calcula-tion,a machine-to-machine interface is provided to acquire target remote sensing *** were conducted to verify the availability and practicality of the proposed frame-work,and the results show the strengths and powerful capabilities of our framework by overcoming deficiencies in traditional *** also achieved the online automatic acquisi-tion of large-scale heterogeneous remote sensing data,which can provide guidance for remote sensing data acquisition strategies.

关键词： Online data acquisition remote sensing metadata planning metadata cataloging model coverage calculation machine-to-machine interface

Techniques of Wallpaper(Biao Hu)in the Palace Museum:A Case Study of the Lodge of Bamboo Fragrance(Zhuxiang Guan)

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Paper And Biomaterials 2023年第3期8卷 29-37页

作者： yue ma Department of Conservation Science and Technology The Palace MuseumBeijing100009China Key Laboratory of Calligraphy and Paintings Conservation Ministry of Culture and TourismBeijing100020China

Biao Hu was one of the eight famous traditional crafts in the late Qing *** skill involved decorating the interiors of ancient buildings such as ceilings,walls,and windows and creating burial *** was primarily used for wooden buildings in northern China during the early Qing *** example,there is white-patterned wallpaper in the Forbidden City utilizing both traditional and nontraditional ***,there was wallpaper with a special pattern in the Lodge of the Bamboo Fragrance(Zhuxiang Guan).Its structure and composition were studied via morphological observations and spectral analyses,the pigments and dyes were analyzed by Raman spectroscopy and ultra-high performance liquid chromatography-mass spectrum(UPLC-MS).Traditional technology and exchanges between China and the West were discussed by the study of patterned wallpapers in other buildings of the Forbidden City.

关键词： the Palace Museum wallpaper wooden structure

Impacts of the Diurnal Cycle of Solar Radiation on Spiral Rainbands

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Advances in Atmospheric Sciences 2016年第9期33卷 1085-1095页

作者： Shunwu ZHOU yue ma Xuyang GE Key Laboratory of Meteorological Disaster of Ministry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjing 210044 Shanghai Climate Center Shanghai 200030

Based on idealized numerical simulations, the impacts of the diurnal cycle of solar radiation on the diurnal variation of outer rainbands in a tropical cyclone are examined. It is found that cold pools associated with precipitation-driven downdrafts are essential for the growth and propagation of spiral rainbands. The downdrafts result in surface outflows, which act as a lifting mechanism to trigger the convection cell along the leading edge of the cold pools. The diurnal cycle of solar radiation may modulate the diurnal behavior of the spiral rainbands. In the daytime, shortwave radiation will suppress the outer convection and thus weaken the cold pools. Meanwhile, the limited cold pool activity leads to a strong modification of the moisture field, which in turn inhibits further convection development.

关键词： solar shortwave radiation tropical cyclone spiral ralnbands diurnal cycle

Fatigue crack growth in fiber-metal laminates

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Science China(Physics,Mechanics & Astronomy) 2014年第1期57卷 83-89页

作者： ma yue XIA ZhongChun XIONG XiaoFeng School of Aeronautics Northwestern Polytechnical University AVIC Chengdu Aircraft Design & Research Institute

Fiber-metal laminates(FMLs)consist of three layers of aluminum alloy 2024-T3 and two layers of glass/epoxy prepreg,and it(it means FMLs)is laminated by Al alloy and fiber *** crack growth rates in notched fiber-metal laminates under constant amplitude fatigue loading were studied experimentally and numerically and were compared with them in monolithic 2024-T3 Al alloy *** is shown that the fatigue life of FMLs is about 17 times longer than monolithic 2024-T3 Al alloy plate;and crack growth rates in FMLs panels remain constant mostly even when the crack is long,unlike in the monolithic 2024-T3 Al alloy *** formula to calculate bridge stress profiles of FMLs was derived based on the fracture theory.A program by matlab was developed to calculate the distribution of bridge stress in FMLs,and then fatigue growth lives were *** element models of FMLs were built and meshed finely to analyze the stress *** results were compared with the experimental *** agree well with each other.

关键词： fiber metal laminates fatigue crack growth bridge stress fatigue crack growth life