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Recent progress and perspectives on silicon anode:Synthesis and prelithiation for LIBs energy storage

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Journal of Energy Chemistry 2022年第1期31卷 615-650,I0016页

作者： Yuanxing Zhang Borong Wu Ge Mu Chengwei Ma Daobin Mu Feng Wu School of Materials Science and Engineering Beijing Institute of TechnologyBeijing Key Laboratory of Environment Science and EngineeringBeijing 100081China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

The ever-increasing environmental/energy crisis as well as the rapid upgrading of mobile devices had stimulated intensive research attention on promising alternative energy storage and conversion *** these devices,alkali metal ion batteries,such as lithium-ion batteries(LIBs) had attracted increasing research attention due to its several advantages including,environmental friendliness,high power density,long cycle life and excellent *** had been widely used in consumer electronics,electric vehicles,and large power grids et ***-based(silicon and their oxides,carbides) anodes had been widely *** several advantages including low cost,high theoretical capacity,natural abundance,and environmental friendliness,which shows great potential as anodes of *** this review,we summarized the recently progress in the synthetic method of silicon matrix *** empirical method for prelithiation of silicon-based materials were also ***,we also reviewed some novel characterization ***,the new design,preparation methods and properties of these nano materials were reviewed and *** hoped that this review can provide a general overview of recent progress and we briefly highlighted the current challenges and prospects,and will clarify the future trend of silicon anode LIBs research.

关键词： Si anodes Lithium-ion batteries Prelithiation Characterization Energy storage and conversion

ON DISCRETE ENERGY DISSIPATION OF MAXWELL’S EQUATIONS IN A COLE-COLE DISPERSIVE MEDIUM

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Journal of Computational Mathematics 2023年第5期41卷 980-1002页

作者： Baoli Yin Yang Liu Hong Li Zhimin Zhang School of Mathematical Sciences Inner Mongolia UniversityHohhot 010021China Beijing Computational Science Research Center Beijing 100193China Department of Mathematics Wayne State UniversityDetroitMI 48202USA

A simple criterion is studied for the first time for identifying the discrete energy dissipation of the Crank-Nicolson scheme for Maxwell’s equations in a Cole-Cole dispersive *** numerical formulas that approximate the time fractional derivatives are investigated based on this criterion,including the L1 formula,the fractional BDF-2,and the shifted fractional trapezoidal rule(SFTR).Detailed error analysis is provided within the framework of time domain mixed finite element methods for smooth *** convergence results and discrete energy dissipation law are confirmed by numerical *** nonsmooth solutions,the method SFTR can still maintain the optimal convergence order at a positive time on uniform *** believe this is the first appearance that a second-order time-stepping method can restore the optimal convergence rate for Maxwell’s equations in a Cole-Cole dispersive medium regardless of the initial singularity of the solution.

关键词： Discrete energy dissipation Crank-Nicolson scheme Maxwell’s equations Shifted fractional trapezoidal rule Mixed finite element methods

INCOMPRESSIBLE LIMIT OF A COMPRESSIBLE LIQUID CRYSTALS SYSTEM

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Acta Mathematica Scientia 2013年第3期33卷 781-796页

作者：郝乙行刘宪高 School of Mathematic Sciences Fudan University

This article is devoted to the study of the so-called incompressible limit for solutions of the compressible liquid crystals system. We consider the problem in the whole space R^N and a bounded domain of R^N with Diri... 详细信息

关键词： Compressible liquid crystals incompressible liquid crystals Mach number

选区激光熔化成形点阵结构的各向异性对力学性能的影响

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稀有金属材料与工程 2022年第4期51卷 1397-1405页

作者：吴鸿飞王维荣王国伟孙朝明张文康沈显峰陈金明中国工程物理研究院机械制造工艺研究所四川绵阳621900 中国工程物理研究院流体物理研究所四川绵阳621900

选区激光熔化技术(selective laser melting,SLM)成形的金属点阵结构由于具有结构设计自由度大、轻量化、缓冲吸能等优势,在航空航天等领域具有广泛的工程应用前景,然而对其力学性能的研究不够充分。本研究设计了不同方向的体心立方(bod... 详细信息

选区激光熔化技术(selective laser melting,SLM)成形的金属点阵结构由于具有结构设计自由度大、轻量化、缓冲吸能等优势,在航空航天等领域具有广泛的工程应用前景,然而对其力学性能的研究不够充分。本研究设计了不同方向的体心立方(body-centered cubic,bcc)和金刚石(Dia)2种晶胞点阵结构,基于SLM技术成形了AlSi10Mg点阵结构,并对成形试样进行了压缩试验,结合有限元分析(finite element analysis,FEA)研究了点阵结构的各向异性对其压缩响应和吸能特性的影响。结果表明,2种点阵结构均存在明显的各向异性。在相对密度基本一致的情况下,点阵结构方向从0°到45°,随着角度的增大,屈服强度明显增大,bcc点阵结构的各向异性对其压缩屈服强度的影响更加明显,Dia点阵结构的屈服强度明显高于bcc点阵结构。不同方向点阵结构的比吸能(specific energy absorption,SEA)存在明显差异,点阵结构方向从0°到45°,随着角度的增大,SEA明显增大,Dia点阵结构的SEA明显高于bcc点阵结构。不同方向点阵结构的碰撞载荷效率(crash load efficiency,CLE)存在明显差异,bcc点阵结构在0°方向取得最大值1.07,并随着点阵结构角度的增大逐渐减小,Dia点阵结构CLE随着点阵结构角度的增大而增大,并在45°方向上取得最大值1.01。

关键词：选区激光熔化点阵结构压缩性能吸能特性

Effects of N source and nitrification pretreatment on growth of Arthrospira platensis in human urine

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第11期8卷 1846-1852页

作者： FENG Dao-lun WU Zu-cheng WANG Da-hui Department of Environmental Science and Engineering Zhejiang University Hangzhou 310027 China

Culture of Arthrospira platensis (Spirulina platensis) in human urine was investigated to get valuable biomass. NO3-N was the proper N source, in comparison with other N source, including urea, NH4-N and NO2-N. As a result, aerobic nitrification of human urine was performed, with above 93.6% nitrification percentage finally achieved with total-N (TN) load of 46.52 mg/(L·d), in which Arthrospira platensis was successfully grown. The main compositions of the obtained biomass are close to those in Zarrouk medium. Thus, it is possible to culture Arthrospira platensis in nitrified human urine for food production within bioregenerative life support systems (BLSSs).

关键词：尿液氮资源硝化作用生物利用

Recent advances in high-pressure science and technology

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Matter and Radiation at Extremes 2016年第1期1卷 59-75页

作者： Ho-Kwang Mao Bin Chen Jiuhua Chen Kuo Li Jung-Fu Lin Wenge Yang Haiyan Zheng Center for High Pressure Science and Technology Advanced Research Shanghai201203PR China

Recently we are witnessing the boom of high-pressure science and technology from a small niche field to becoming a major dimension in physical *** of the most important technological advances is the integration of synchrotron nanotechnology with the minute samples at ultrahigh *** of high pressure have greatly enhanced our understanding of the electronic,phonon,and doping effects on the newly emerged graphene and related 2D layered *** pressure has created exotic stoichiometry even in common Group 17,15,and 14 compounds and drastically altered the basic σ and π bonding of organic *** pressure measurements enable us to study the rheology and flow of mantle minerals in solid state,thus quantitatively constraining the *** also introduce a new approach to understand defect and plastic deformations of nano *** examples open new frontiers of high-pressure research.

关键词： High pressure science and technology Static high pressure Synchrotron X-ray probe Equation of state

Numerical simulation of quasi-static compression on a complex rubber foam

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Acta Mechanica Solida Sinica 2017年第3期30卷 285-290页

作者： Huyi Wang Wenjun Hu Fengpeng Zhao Institute of Systems Engineering CAEP Mianyang 621900 China

A complex rubber foam under quasi-static compression is simulated using the finite element method （FEM）, The present work sets up the phenomenological constitutive model for the silicon rubber, The computerized tomography （CT） technique is utilized to reconstruct the real complex foam geometries, The quasi-static uniaxial compression on the foam is simulated in ABAQUS. The present work obtains the stress response as the nominal strain nearly reaches 80% and the foam exhibits hyper-elastic behavior, The FEM results achieve good agreements with the data obtained from the multi-scale simulation and the tests as the nominal strain is less than 60%.

关键词： Complex Rubber Foam Quasi-static Compression

First-principles investigations on elastic and thermodynamic properties of zinc-blende structure BeS

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Chinese Physics B 2008年第4期17卷 1377-1382页

作者：常景陈向荣张伟朱俊 College of Physical Science and Technology Sichuan University International Centre for Materials Physics Chinese Academy of Sciences

In this paper the elastic and thermodynamic properties of the cubic zinc-blende structure BeS at different pressures and temperatures are investigated by using ab initio plane-wave pseudopotential density functional theory method within the generalized gradient approximation （GGA）. The calculated results are in excellent agreement with the available experimental data and other theoretical results. It is found that the zinc-blende structure BeS should be unstable above 60GPa. The thermodynamic properties of the zinc-blende structure BeS are predicted by using the quasi-harmonic Debye model. The pressure-volume-temperature （P - V - T） relationship, the variations of the thermal expansion coefficient α and the heat capacity Cv with pressure P and temperature T, as well as the Gruneisen parameter-pressure-temperature （γ- P - T） relationship are obtained systematically in the ranges of 0-90GPa and 0-2000K.

关键词： density functional theory elastic constants thermodynamic properties Griineisen parameter BeS

Nitro-tetrazole based high performing explosives:Recent overview of synthesis and energetic properties

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Defence Technology（防务技术） 2021年第6期17卷 1995-2010页

作者： Saira Manzoor Qamar-un-nisa Tariq Xin Yin Jian-Guo Zhang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China

Heterocyclic skeleton(Azoles)and different energetic groups containing high performing explosives are highly emerged in recent years to meet the challenging requirements of energetic materials in both military and civilian applications with improved *** this purpose tetrazole(Azole)is identified as an attractive heterocyclic backbone with energetic functional groups nitro(-NO_(2)),nitrato(-ONO_(2)),nitrimino(-NNO_(2)),and nitramino(eNHeNO_(2))to replace the traditionally used high performing *** tetrazole based compounds having these energetic functional groups demonstrated advanced energetic performance(detonation velocity and pressure),densities,and heat of formation(HOF)and became a potential replacement of traditional energetic compounds such as *** review presents a summary of the recently reported nitro-tetrazole energetic compounds containing poly-nitro,di/mono-nitro,nitrato/nitramino/nitrimino,bridged/bis/di tetrazole and nitro functional groups,describing their preparation methods,advance energetic properties,and further applications as highperforming explosives,especially those reported in the last *** review aims to provide a fresh concept for designing nitro-tetrazole based high performing explosives together with major challenges and perspectives.

关键词： Tetrazole Energetic materials Functional groups Heterocyclic High-performing explosives