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Maximizing ionic transport of Li1+xAlxTi2-xP3O12 electrolytes for all-solid-state lithium-ion storage:A theoretical study

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Journal of Materials Science & Technology 2021年第14期73卷 45-51页

作者： Tiantian Wang Jun Mei Jianjun Liu Ting Liao State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of Sciences1295 Dingxi RoadShanghai 200050China School of Mechanical Medical and Process EngineeringQueensland University of Technology2 George StreetBrisbaneQLD4000Australia School of Chemistry and Physics Queensland University of Technology2 George StreetBrisbaneQLD4000Australia Centre of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Centre for Materials Science Queensland University of Technology2 George SfreefBrisbane.QLD4000Australia

The concept of all-solid-state batteries provides an efficient solution towards highly safe and long-life energy storage,while the electrolyte-related challenges impede their practical ***1+xAlxTi2-xP3O12(0≤x≤1)with superior Li ionic conductivity holds the promise as an ideal solidstate *** intrinsic mechanism to reach the most optimum ionic conductivity in Al-doped Li1+xAlxTi2-xP3O12,however,is unclear to ***,this work intends to provide an atomic scale study on the Li-ion transport in Li1+xAlxTi2-xP3O12electrolyte to rationalize how Al-dopant initiates interstitial Li activity and facilitate their easy mobility combining Density Functional Theory(DFT)and ab initio Molecular dynamics(AIMD)*** is discovered that the interstitial Li ions introduced by Al dopants can effectively activate the neighboring occupied intrinsic Li-ions to induce a long-range mobility in the lattice and the maximum Li ionic conductivity is achieved at 0.50 Al doping *** Li-ion migration paths in Li1+xAlxTi2-xP3O12have investigated as the degree of distortion of[PO4]tetrahedra and[TiO6]octahedra resulted by different Al doping *** asymmetry of the surrounding distorted[PO4]and[TiO6]polyhedrons play a critical role in reducing the migration barrier of Li ions in Li1+*** flexible[Ti O6]polyhedrons with a capacity to accommodate the structural distortion govern the Li ionic conductivity in Li1+*** work rationalizes the mechanism for the most optimum Li ionic conductivity in Al-doped Li Ti2P3O12electrolyte and,more importantly,paves a road for exploring novel all-solid-state lithium battery electrolytes.

关键词： Density Functional Theory Solid-state-electrolyte Li ionic conductivity Bond angle variance Al-dopant

Epitaxial synthesis and electronic properties of monolayer Pd2Se3

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Chinese Physics B 2020年第9期29卷 543-548页

作者：范朋张瑞梓戚竞李恩钱国健陈辉王东飞郑琦汪琴林晓张余洋杜世萱 Hofer W A 高鸿钧 institute of Physics and University of Chinese Academy of Sciences Chinese Academy of Sciences(CAS)Beijing 100190China CAS Center for Excellence in Topological Quantum Computation Beijing 100190China School of Natural and Environmental Sciences Newcastle UniversityNewcastle upon Tyne Ne77 RUUK

Two-dimensional(2D)materials received large amount of studies because of the enormous potential in basic science and industrial *** Pd2Se3 is a fascinating 2D material that was predicted to possess excellent thermoelectric,electronic,transport,and optical ***,the fabrication of large-scale and high-quality monolayer Pd2Se3 is still ***,we report the synthesis of large-scale and high-quality monolayer Pd2Se3 on graphene-SiC(0001)by a two-step epitaxial *** atomic structure of Pd2Se3 was investigated by scanning tunneling microscope(STM)and confirmed by non-contact atomic force microscope(nc-AFM).Two subgroups of Se atoms have been identified by nc-AFM image in agreement with the theoretically predicted atomic *** tunneling spectroscopy(STS)reveals a bandgap of 1.2 eV,suggesting that monolayer Pd2Se3 can be a candidate for photoelectronic *** atomic structure and defect levels of a single Se vacancy were also *** spatial distribution of STS near the Se vacancy reveals a highly anisotropic electronic *** two-step epitaxial synthesis and characterization of Pd2Se3 provide a promising platform for future investigations and applications.

关键词： 2D material Pd2Se3 scanning tunneling microscope/spectroscopy non-contact atomic force microscope

Satellite remote sensing of atmospheric particulate matter mass concentration:Advances,challenges,and perspectives

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Fundamental Research 2021年第3期1卷 240-258页

作者： Ying Zhang Zhengqiang Li Kaixu Bai Yuanyuan Wei Yisong Xie Yuanxun Zhang Yang Ou Jason Cohen Yuhuan Zhang Zongren Peng Xingying Zhang Cheng Chen Jin Hong Hua Xu Jie Guang Yang Lv Kaitao Li Donghui Li State Environmental Protection Key Laboratory of Satellite Remote Sensing Chinese Academy of SciencesAerospace Information Research InstituteBeijing 100101China Key Laboratory of Geographic Information Science(Ministry of Education) East China Normal UniversityShanghai 200241China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China School of Environment and Spatial Informatics China University of Mining and TechnologyXuzhou 221116China Satellite Application Center for Ecology and Environment Ministry of Ecology and EnvironmentBeijing 100835China Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites China Meteorological AdministrationNational Satellite Meteorological CenterBeijing 10081China Universitéde Lille CNRSUMR 8518LOA-Laboratoire d'Optique AtmosphériqueLille 59000France Chinese Academy of Sciences Anhui Institute of Optics and Fine MechanicsHefei 230031China

Mapping the mass concentration of near-surface atmospheric particulate matter(PM)using satellite observations has become a popular research niche,leading to the development of a variety of instruments,algorithms,and datasets over the past two *** this study,we conducted a holistic review of the major advances and challenges in quantifying PM,with a specific focus on instruments,algorithms,datasets,and modeling methods that have been developed over the past 20 *** aim of this study is to provide a general guide for future satellite-based PM concentration mapping practices and to better support air quality monitoring and management of environmental ***,we review the evolution of satellite platforms,sensors,inversion algorithms,and datasets that can be used for monitoring aerosol *** then compare various practical methods and techniques that have been used to estimate PM mass concentrations and group them into four primary categories:(1)univariate regression,(2)chemical transport models(CTM),(3)multivariate regression,and(4)empirical physical *** the main challenges encountered in PM mapping practices,for example,data gaps and discontinuity,a hybrid method is proposed with the aim of generating PM concentration maps that are both spatially continuous and have high precision.

关键词： Satellite remote sensing Particulate matter Aerosol optical depth Air quality monitoring Environmental modeling

北京城区交通时间可达性测度及其空间特征分析（英文）

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Journal of Geographical Sciences 2016年第12期26卷 1754-1768页

作者：王江浩邓羽宋辞田大江 institute of Geographic Sciences and Natural Resources Research CAS Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application The Postdoctoral Research Station of Tourism Information Research Center Beijing Union University & University of International Business and Economics School of Information Technology and Management University of International Business and Economics

Construction of road infrastructure is fundamental to city operation and development, as well as an important pathway and focus in physical urban-rural integration. The long-term implementation of a system of ring roads plus radiating roads in Beijing has strongly impacted urban infrastructure construction and space-time accessibility. Particularly, recent rapid growth of private car ownership in Beijing has imposed greater loads on its road system, seriously hampering urban commuting efficiency and negatively impacting quality of life. To address such challenges and enhance the rapid development of transport infrastructure, Beijing has accelerated rail transit construction since 2008 in an effort to improve commuting capacity. This paper aims to measure time accessibility and its spatial characteristics in urban areas of Beijing by applying a comprehensive method that combines vector and raster attribute data generated from road network and subway transport infrastructure. By using a dual index of accessibility and road density, the study further reveals the features of and differences in spatial accessibility and the construction of road systems in urban areas of the northern and southern parts of Beijing. The findings of this study can provide a scientific basis for future urban planning and road system construction both in general and with respect to Beijing, given its aspirations to become a world city.

关键词：可接近性道路密度空间特征北京

Thoughts on the Sustainable Design Medium of Urban Communities Within Information and Telecommunication Technologies

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Journal of Sociology Study 2018年第4期8卷 188-205页

作者： Tigran Haas Reza Kazemian Royal institute of Technology Sweden

Reconstructed moisture evolution of the deserts in northern China since the Last Glacial Maximum and its implications for the East Asian Summer Monsoon

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Reconstructed moisture evolution of the deserts in northern ...

Development of novel gene carrier using modified nano hydroxyapatite derived from equine bone for osteogenic differentiation of dental pulp stem cells

中国科学院地质与地球物理研究所2014年度（第14届）...

作者： Qin Li Haibin Wu Yanyan Yu Aizhi Sun Slobodan B.Markovi Zhengtang Guo Key Laboratory of Cenozoic Geology and Environment Institute of Geology and Geophysics Chinese Academy of Sciences University of Chinese Academy of Sciences Chair of Physical Geography Faculty of Sciences University of Novi Sad

The East Asian summer monsoon(EASM) affects rainfall variability and consequently terrestrial ecosystems in the densely populated Asian region. Understanding the nature of EASMevolution is vital for interpreting the paleoclimatic conditions of the region and for predicting future climate changes. However, the relative importance of factors such as high northern latitude ice volume, low northern latitude summer insolation and atmospheric carbon dioxide(CO2) levels in controlling the EASM on orbital timescales remains controversial. The aeolian deposits and vegetation in the dry lands of northern China are highly sensitive to climatic changes. Here, we present a reconstruction of effective moisture levels in the region since the Last GlacialMaximumbased on an analysis of changes in the sedimentary facies of aeolian deposits and vegetation type combined with reliable age control. The results demonstrate that extremely arid conditions prevailed from approximately 21-16 ka BP;that conditions gradually becamewetter from16-8 ka BP, reaching a peak in effective moisture from8-4 ka BP;and that relatively arid conditions prevailed thereafter. This pattern of moisture evolution probably reflects changes in summer monsoon precipitation. Although the strengthening of the EASM lagged variations in northern hemisphere insolation and atmospheric CO2 content, the strengthening was in phase with the rise in sea level from 21-6 ka BP which was controlled by changes in global ice volume. Therefore our results suggest that sea level rise may have been a major driver of EASM precipitation in the desert area of northern China during this period, as a result of shortening the transport distance of oceanic moisture sources to the continental interior and thus enabling the monsoon rainfall belt to reach the study region.

关键词： East Asian summer monsoon effective moisture dune activity vegetation Last Glacial Maximum sea level

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Bioactive Materials 2021年第9期6卷 2742-2751页

作者： Myung Chul Lee Hoon Seonwoo Kyoung Je Jang Shambhavi Pandey Jaewoon Lim Sangbae Park Jae Eun Kim Yun-Hoon Choung Pankaj Garg Jong Hoon Chung Department of Biosystems&Biomaterials Science and Engineering Seoul National UniversitySeoul08826Republic of Korea Department of Biosystems Engineering Seoul National UniversitySeoul08826Republic of Korea Department of Industrial Machinery Engineering Sunchon National University315 Maegok-dongSunchon57922Republic of Korea Interdisciplinary Program in IT-Bio Convergence System Sunchon National UniversitySuncheon57922Republic of Korea Division of Agro-system Engineering Gyeongsang National University501 Jinju-daeroJinju52828Republic of Korea institute of Agriculture&Life Science Gyeongsang National UniversityJinju52828Republic of Korea Research institute for Agriculture and Life Sciences Seoul National UniversitySeoul08826Republic of Korea Department of Otolaryngology Ajou University School of MedicineSuwon16499Republic of Korea Ajou University Graduate School of Medicine Bk21 Plus Research Center for Biomedical SciencesSuwon16499Republic of Korea BK21 Global Smart Farm Educational Research Center Seoul National UniversitySeoul08826Republic of Korea

Hydroxyapatite(HA)is a representative substance that induces bone *** research team extracted nanohydroxyapatite(EH)from natural resources,especially equine bones,and developed it as a molecular biological ***(PEI)was used to coat the EH to develop a gene *** verify that PEI is well coated in the EH,we first observed the morphology and dispersity of PEI-coated EH(pEH)by electron *** pEH particles were well distributed,while only the EH particles were not distributed and ***,the existence of nitrogen elements of PEI on the surface of the pEH was confirmed by EDS,calcium concentration measurement and fourier transform infrared spectroscopy(FT-IR).Additionally,the pEH was confirmed to have a more positive charge than the 25 kD PEI by comparing the zeta *** a result of pGL3 transfection,pEH was better able to transport genes to cells than 25 kD *** verification as a gene carrier for pEH,we induced osteogenic differentiation of DPSCs by loading the BMP-2 gene in pEH(BMP-2/pEH)and delivering it to the *** a result,it was confirmed that osteogenic differentiation was promoted by showing that the expression of osteopontin(OPN),osteocalcin(OCN),and runt-related transcription factor 2(RUNX2)was significantly increased in the group treated with BMP-2/*** conclusion,we have not only developed a novel nonviral gene carrier that is better performing and less toxic than 25 kD PEI by modifying natural HA(the agricultural byproduct)but also proved that bone differentiation can be effectively promoted by delivering BMP-2 with pEH to stem cells.

关键词： Nanocomposites Biomedical applications Hydroxyapatite Polyethyleneimine Gene carrier Osteogenic differentiation

High performance organic transistors and phototransistors based on diketopyrrolopyrrole-quaterthiophene copolymer thin films fabricated via low-concentration solution processing

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Chinese Chemical Letters 2018年第11期29卷 1675-1680页

作者： Pengcheng Gu Mengxiao Hu Shang Ding Guangyao Zhao Yifan Yao Feng Liu Xiaotao Zhang Huanli Dong Xiangke Wang Wenping Hu Beijing Key Laboratory for Optical Materials and Photonic Devices Department of Chemistry Capital Normal University Beijing 100048 China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) & Department of Chemistry School of Science Tianjin University Tianjin 300072 China College of Environmental Science and Engineering North China Electric Power University Beijing 102206 China Department of Physics &Astronautics Shonghai Jiao Tong University Shanghai 200240 China

Conjugated polymers have received considerable attentions over the past years due to their large-area potential applications via low-cost solution processing. Improving crystallinity of conjugated polymer molecules in solution-processed thin films is crucial for their efficient charge transport and thus high performance optoelectronic devices. Herein, with diketopyrrolopyrrole-quaterthiophene （PDQT） copo/ymer as an example, it is found that by simply reducing the solution concentration for spincoating meanwhile with the assistance of post-annealing, significantly enhanced film crystallinity with formation of typical single crystalline domains is obtained, which benefits from the enough space for better molecular assembly especially at the semiconductor/dielectric interface. High performance polymer transistors and phototransistors were finally constructed based on the optimal lowconcentration （2 mg/mL） spin-coated PDQT films （～12 nm）, which giving a high charge carrier mobility of 2.28 cm2 V-1 s-1 and a photoresponse on/off ratio of 2.1 ×107 at VG = 0 V under white light irradiation of 6mW/cm2. The results suggest that the bright future of PDQT crystalline films for large-area flexible integrated optoelectronic devices and the application of effective low-concentration processing approach in solution-processed organic electronics with reduced material waste.

关键词： Conjugated polymer Thin film Low-concentration processing Crystallinity Molecular orders Mobility Optoelectronic property

界面工程实现Au@MoS_(2)核壳异质结在等离激元学和光电子学领域卓越的热载流子输运动力学

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Science China Materials 2023年第10期66卷 3931-3940页

作者：刘然朱翔宇刘盛洪欧阳德才马小茜夏芳芳余一梦张悍吴劲松刘世元梁文锡李渊翟天佑 State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Nanostructure Research CenterWuhan University of TechnologyWuhan 430070China School of Engineering and Materials Science Queen Mary University of LondonMile End RoadLondonE14NSUK State Key Laboratory of Digital Manufacturing Equipment and Technology School of Mechanical Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Shenzhen Huazhong University of Science and Technology Research institute Shenzhen 518057China

贵金属和二维半导体构建的异质结为等离激元纳米结构产生的热载流子提供了独特的电荷传输路径,有望应用于各种等离激元和光电子器件.然而,传统异质结构的电荷转移速度和效率通常受限于有限的界面面积和不可避免的界面污染.本文中,具有... 详细信息

贵金属和二维半导体构建的异质结为等离激元纳米结构产生的热载流子提供了独特的电荷传输路径,有望应用于各种等离激元和光电子器件.然而,传统异质结构的电荷转移速度和效率通常受限于有限的界面面积和不可避免的界面污染.本文中,具有原子级清洁和较大接触界面的新型Au@MoS_(2)核壳异质结构能够实现超快和高效的热电子转移.飞秒瞬态吸收光谱研究表明,Au@MoS_(2)中从金纳米颗粒到MoS_(2)的热电子注入时间常数小于244 fs,而机械转移方法制备的Au/MoS_(2)对照样品的热电子注入时间常数为493 fs,同时,电荷转移效率从Au/MoS_(2)的3.33%提升至Au@MoS_(2)的25.3%.开尔文探针力显微镜和离散偶极近似研究进一步证明了上述结果,明显改善的电荷转移归因于原子级清洁和完全封装的异质结界面.这项研究提供了贵金属-二维半导体异质结构内固有电荷转移的基本理解,从而展现了Au@MoS_(2)这一新型异质结结构在等离激元和光电子器件中的应用前景.

关键词： 2D materials MoS_(2) heterostructures optoelectronics plasmonics