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Comparative study on microstructure of β-Ni(OH)_(2) as cathode material for Ni-MH battery

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Science China(Technological Sciences) 2006年第3期49卷 297-312页

作者： LOU Yuwan yang chuanzheng ZHANG Xigui MA Liping XIA Baojia The Research Center of Semiconductor Functional Film Engineering Technology Nano Technology LaboratoryShanghai Institute of Micro-system and Information TechnologyChinese Academy of SciencesShanghai 200050China

Microstructures such as micro-strain,crystallite as well as stacking faults can result in broadening of X-ray diffraction *** on least square principle,new com-putation method and programs,which can separate the two-fold broadening effect caused by crystallite/stacking faults and which can separate the three-fold broadening effect caused by crystallite/residual stress/stacking faults,have been *** a result,mi-cro-strain and crystallite sizes as well as stacking fault probability can be calculated re-spectively and investigated in *** the microstructures ofβ-Ni(OH)_(2)are investi-gated by means of these *** main results are as follows:1)The shape and size of crystallite as well as stacking fault probability of rawβ-Ni(OH)_(2)are dependent on its preparation technique.2)Activation changes the microstructure ofβ-Ni(OH)_(2).It transforms the crystallite shape from short-fat cylinder into polyhedrons or nearly equiaxial *** also alters the residual strain states and stacking fault probability.3)After charge-discharge and cycle-lifetime testing,the crystallites ofβ-Ni(OH)_(2)are fined further and its residual strain and fault probability were *** extent of these effects are dependent on circulating conditions.4)Calcium additive inβ-Ni(OH)_(2)restrains grain fining process and turns twin fault into deformation fault.5)Comprehensive analysis reveals that micro structural parameters ofβ-Ni(OH)_(2)are correlated with some performance of Ni-MH battery.

关键词： microstructure β-Ni(OH)_(2) Ni-MH battery XRD

Theoretic Diffraction Research on the Order-Disorder Effect of Transition Metal in Li(Ni1/3 Co1/3 Mn1/3)O2

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Journal of Harbin Institute of Technology(New Series) 2018年第6期25卷 78-89页

作者： Chunhui Cao Jian Zhang chuanzheng yang Baojia Xia Shanghai Institute of Microsystem of Information Technology Shanghai 200050China University of Chinese Academy of Sciences Beijing 100049Chin

After describing research status of super-structure for Li (Ni_(1/3)Co_(1/3)Mn_(1/3)) O_2,diffraction patterns of Li (Ni_(1/3)Co_(1/3)Mn_(1/3)) O_2 in different order parameters have been researched by Powder-cell program,including crystal structure,X-ray and neutron diffraction pattern,anomalous diffraction pattern and comparison of NiCoMn in different positions. The influence of order parameters on intensity of matrix and super-lattice diffraction lines has also been analyzed and the summarization and prospect have been made lastly.

关键词： Li(Ni Co Mn )O order-disorder diffraction

薄膜、多层膜和一维超点阵材料的X射线分析新进展

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物理学进展 1999年第2期19卷 183-216页

作者：杨传铮上海大学理学院物理系

Ｘ射线散射和衍射对于厚度为几个原子层到几十微米的薄膜材料是灵敏的。一般而言，Ｘ射线方法是非破坏性的，其中不要求样品制备，它们提供恰如其分的技术路线，以获得薄膜材料的结构等信息；分析能对从完整单晶膜和多晶膜到非晶膜的所... 详细信息

Ｘ射线散射和衍射对于厚度为几个原子层到几十微米的薄膜材料是灵敏的。一般而言，Ｘ射线方法是非破坏性的，其中不要求样品制备，它们提供恰如其分的技术路线，以获得薄膜材料的结构等信息；分析能对从完整单晶膜和多晶膜到非晶膜的所有材料进行。本文评述了用Ｘ射线方法表征和研究这类薄膜材料的新进展。全文包括引论、常用的Ｘ射线方法、原子尺度薄膜的研究、工程薄膜和多层膜的研究、一维超点阵结构研究、超点阵界面粗糙度的Ｘ射线散射理论。

关键词：薄膜一维超点阵 X射线分析多层膜

∼2.5 nm pores in carbon-based cathode promise better zinc-iodine batteries

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Chinese Chemical Letters 2024年第5期35卷 471-476页

作者： Yajun Hou chuanzheng Zhu Qiang Wang Xiaomeng Zhao Kun Luo Zongshuai Gong Zhihao Yuan School of Materials Science and Engineering Tianjin Key Laboratory of Photoelectric Materials&DevicesTianjin University of TechnologyTianjin 300384China

The relationship mechanism between the material pore structures and cathodic iodine chemistry plays a vital role in efficient Zn-I_(2) batteries,but is unclear,retarding further *** work innovatively indicates a great contribution of∼2.5nm pore structure of nanocarbons to efficient iodine adsorption,rapid I^(−)↔I_(2) conversion,and polyiodide inhibition,via scrupulously designing catalysts with controllable pore sizes *** I_(2)-loading within the designed nitrogen-doped nanocarbons can reach up to as high as 60.8 wt%.The batteries based on the cathode deliver impressive performances with a large capacity of 178.8 mAh/g and long-term cycling stability more than 4000 h at 5.0 ***,these is no polyiodide such as I_(3)−and I_(5)−detected during the charge-discharge processes from comprehensive electrochemical cyclic voltammetry,X-ray photoelectron spectroscopy,and Raman *** work provides a novel knowledge-guided concept for rational pore design,promising better Zn-I_(2) batteries,which is also hoped to benefit other advanced energy technologies,such as Li-S,Li-ion,and Al-I_(2) batteries.

关键词： Zinc-iodine batteries Structure-performance relationship Iodine conversion chemistry Cathode materials Porous carbon

The largest CPIES array in the marginal sea:abundant dynamics in the northeast South China Sea

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Acta Oceanologica Sinica 2024年第1期43卷 135-137页

作者： Hua Zheng Xiao-Hua Zhu Min Wang Ruixiang Zhao chuanzheng Zhang Feng Nan Fei Yu Institute of Polar and Ocean Technology Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China National Marine Environmental Monitoring Center Dalian 116023China Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China Laboratory for Ocean and Climate Dynamics Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China

The South China Sea(SCS)is a marginal sea connecting the Pacific and Indian oceans and has gained much attention in recent *** dynamics in the northeast SCS are considerably influenced by topography,monsoons,tropical ... 详细信息

关键词： northeast marginal abundant

In-situ synthesis of quantum dots in the nucleus of live cells

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National Science Review 2024年第3期11卷 172-182页

作者： Yusi Hu Zhi-Gang Wang Haohao Fu chuanzheng Zhou Wensheng Cai Xueguang Shao Shu-Lin Liu Dai-Wen Pang State Key Laboratory of Medicinal Chemical Biology Frontiers Science Centre for New Organic MatterTianjin Key Laboratory of Biosensing and Molecular Recognition Research Centre for Analytical Sciences College of Chemistry School of Medicine and Frontiers Science Centre for Cell Responses Nankai University Haihe Laboratory of Sustainable Chemical Transformations

The cell nucleus is the main site for the storage and replication of genetic material, and the synthesis of substances in the nucleus is rhythmic, regular and strictly regulated by physiological processes. However,whether exogenous substances, such as nanoparticles, can be synthesized in situ in the nucleus of live cells has not been reported. Here, we have achieved in-situ synthesis of CdSxSe1-xquantum dots（QDs） in the nucleus by regulation of the glutathione（GSH） metabolic pathway. High enrichment of GSH in the nucleus can be accomplished by the addition of GSH with the help of the Bcl-2 protein. Then, high-valence Se is reduced to low-valence Se by glutathione-reductase-catalyzed GSH, and interacts with the Cd precursor formed through Cd and thiol-rich proteins, eventually generating QDs in the nucleus. Our work contributes to a new understanding of the syntheses of substances in the cell nucleus and will pave the way for the development of advanced ‘supercells’.

关键词： glutathione live cell nucleus quantum dot intracellular synthesis

Li(Ni,Me)O_2中Li/Ni原子混合占位研究的新方法及应用

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稀有金属材料与工程 2011年第8期40卷 1348-1354页

作者：李佳杨传铮张建夏保佳高学峰中国科学院上海微系统与信息技术研究所上海200050 上海德朗能动力电池有限公司上海201406

介绍了作者提出的一种分析与研究锂离子电池正极活性材料Li(Ni,Me)O2(Me=Co,Mn或Co+Mn)中Li/Ni在3a/3b位混合占位的新方法,即根据Li(Ni,Me)O2的混合占位模型,借助PowderCell1.0计算程序模拟计算得到X射线衍射强度比与混合占位参数x的线... 详细信息

介绍了作者提出的一种分析与研究锂离子电池正极活性材料Li(Ni,Me)O2(Me=Co,Mn或Co+Mn)中Li/Ni在3a/3b位混合占位的新方法,即根据Li(Ni,Me)O2的混合占位模型,借助PowderCell1.0计算程序模拟计算得到X射线衍射强度比与混合占位参数x的线性关系,根据实验测得的X射线衍射强度比和此线性关系方程,求得对应的混合占位参数x。把这种方法用于不同成分相关材料混合占位的理论模拟,得到5种材料衍射强度比的平方根与混合占位参数x之间的线性关系;把这些线性方程应用于实际材料Li(Ni0.6Co0.2Mn0.2)O2的合成时,获得了混合占位参数x与材料焙烧处理温度之间的关系;同时还用这种方法研究了2H-石墨/Li(Ni1/3Co1/3Mn1/3)O2电池在充放电过程中Li(Ni1/3Co1/3Mn1/3)O2晶体结构和微结构的变化。

关键词：锂离子电池正极活性材料 Li/Ni原子混合占位 X射线衍射

Exploration of the mechanism of cavitation vortex rope and vortex development in the draft tube of tubular turbine units

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International Journal of Agricultural and Biological Engineering 2024年第1期17卷 163-171,F0002页

作者： Chuang Cheng Zhenggui Li Changrong Shen Shenglong Gu Chuchu Zeng chuanzheng Bai Meng Liu Junfeng Hu Qinghai University of Science and Technology Xining 810000China Key Laboratory of Fluid and Power Machinery Ministry of Education(Xihua University)Chengdu 610039China South-to-North Water Diversion East Jiangsu Water Source Co. Ltd.Nanjing 210029China School of civil engineering and water resources Qinghai UniversityXining 810016China Dongyuan Branch of Shenzhen Water Planning and Design Institute Co. Ltd.Changsha 410000China

Draft tube vortex rope is considered a special cavitation flow phenomenon in tubular turbine *** vortex rope is one of the most detrimental factors affecting the safety of hydraulic *** this study,ANSYS CFX software was utilized to numerically simulate the internal cavitation flow of a hydraulic turbine draft *** evolution of the cavitation vortex core was characterized by vortex line distribution and vorticity transport *** shape and number of blades influenced the revolving direction and distribution characteristics of the vortex close to the runner cone,which formed a counterclockwise-clockwise-counterclockwise distribution ***,there were many secondary flows in the draft *** cancellation and dissipation between the flows was one of the reasons for reduction in *** the cross-sectional shape of the draft tube was changed,the vorticity was distributed from the center of the vortex rope to all parts of the cross-sectional draft tube,with extreme values at the center and at the *** vortex stretching and dilatation terms played a major role in the change in vorticity,with the baroclinic torque having an effect at the center of the vortex rope,this study is helpful to understand the flow of water in the draft tube and guide the design and optimization of the draft tube in engineering application.

关键词： cavitation vortex rope vorticity transport equation vortex line draft tube

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X射线多重衍射的进展

物理学进展 1999年第1期19卷 1-23页

作者：杨传铮郝建民上海大学理学院物理系天津电子材料研究所

若晶体具有多个（≥３）原子平面同时满足Ｂｒａｇｇ定律，并同时衍射一单色入射Ｘ射线光束，这就是多重衍射现象。本文介绍Ｘ射线多重衍射的基本原理，获得多重衍射花样的实验方法、衍射理论和若干应用。

关键词： X射线衍射晶体多重衍射基本原理进展