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Recent advances in nanomaterials for high-performance Li–S batteries

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Journal of Energy Chemistry 2020年第8期29卷 86-106,I0004页

作者： James E.knoop Seongki Ahn Joint School of Nanoscience and Nanoengineering North Carolina Agricultural and Technical State UniversityGreensboroNC 27401USA Research Organization for Nano and Life Innovation Waseda University513WasedatsurumakichoShinjuku-kuTokyo 162-0041Japan

This article reviews nanotechnology as a practical solution for improving lithium-sulfur batteries. Lithiumsulfur batteries have been widely examined because sulfur has many advantageous properties such as a high crustal abundance, low environmental impact, low cost, high gravimetric(2600 W h kg-1) and volumetric(2800 W h L-1) energy densities, assuming complete conversion of sulfur to lithium sulfide(Li2S)upon lithiation. however, lithium-sulfur batteries have not yet reach commercialization due to demerits involving the formation of soluble lithium polysulfides(Li2Sn, n=3–8), low electrical conductivity, and low loading density of sulfur. These issues arise mainly due to the polysulfide shuttle phenomenon and the inherent insulating nature of sulfur. To overcome these issues, strategies have been pursued using nanotechnology applied to porous carbon nanocomposites, hollow one-dimensional carbon nanomaterials, graphene nanocomposites, and three-dimensional carbon nanostructured matrices. This paper aims to review various solutions pertaining to the role of nanotechnology in synthesizing nanoscale and nanostructured materials for advanced and high-performance lithium–sulfur batteries. Furthermore, we highlight perspective research directions for commercialization of lithium–sulfur batteries as a major power source for electric vehicles and large-scale electric energy storage.

关键词： Nanotechnology Lithium–sulfur batteries Carbon nanomaterials Nanocomposite sulfur 3D nanostructured materials

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One and Two Photon Excitation of Radiofrequency Trapped Ca

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Chinese Journal of Chemical Physics 2009年第2期22卷 119-122页

作者： C. Zumsteg C. Champenois D. Guyomarc'h G. hagel M. houssin M. knoop Physique des Interactions Ioniques et Moléculaires (CNRS UMR 6633) Université de Provence Centre de Saint Jérome Case C21 13397 Marseille Cedex 20 France

Radiofrequency （rf） trapped ions are versatile candidates for a large panel of applications ranging from quantum information to the creation of cold molecules. Sample size can range from a single to 10^6 ions, and the internal and external energy states of the atoms can be controlled with high precision. In the experiment, we focus on different protocols related to frequency metrology using rf trapped Ca.

关键词： Radiofrequency trapped ion Frequency metrology Laser stabilisation

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欧洲规范及其对现代测量与地籍发展的影响

武测译文 1996年第1期 53-58页

作者： knoop,h 周京春

标准化是测量和地籍的经济准则。随着１９９３年１月１日欧洲经济共同体的建立，这项工作已发展为一种国家和国际的新任务。

关键词：欧洲规范现代测量地籍测量发展

Production and Mechanical Behaviour of Biomedical CoCrMo Alloy

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Chinese Physics Letters 2011年第12期28卷 215-218页

作者： O.Sahin A.Rıza Tuncdemir h.Ali Cetinkara h.Salih Guder E.Sahin Department of Physics Art and Science FacultyMicro/Nanomechanic Characterization LaboratoryMustafa Kemal UniversityHatayTurkey Department of Prosthetic Dentistry Dentistry FacultyMustafa Kemal UniversityHatayTurkey

Cobalt-based alloy(Co-30Cr-5.5Mo)is produced by the investment casting *** alloy complies with the ASTM F75 standard and is widely used in the manufacturing of orthopedic implants because of its high strength,good corrosion resistance and excellent biocompatibility ***,XRD and microhardness tests are used to examine the mechanical properties of the *** examined material exhibits the behaviour of indentation size effect(ISE).Our results reveal that Vickers and knoop microhardness are dependent on indentation test *** traditional Meyer's law,the proportional specimen resistance(PSR)model and the hays-Kendall model(hK)are used to analyze the load dependence of the *** a result,the hays-Kendall model is found to be the most effective to determine the load-independent hardness hLI of CoCrMo alloy.

关键词： alloy resistance process

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旋流转换炉(CCF)装置的工艺设计

燃料与化工 1998年第5期29卷 277-281页

作者： h.K.A.Meijer J.Van Laar W.van der knoop R.van Nederveen 陈世读

CCF工艺是欧洲和美国十年来进行的研究和半工业试验的结果,在此期间,各公司的试验室、研究所和大学研究了该工艺的各个单元,然而,大型中间试验装置的试验工作是由荷兰艾莫伊登的hoogoven研究开发部和在匹兹堡的AISI直接炼铁课题组共同... 详细信息

CCF工艺是欧洲和美国十年来进行的研究和半工业试验的结果,在此期间,各公司的试验室、研究所和大学研究了该工艺的各个单元,然而,大型中间试验装置的试验工作是由荷兰艾莫伊登的hoogoven研究开发部和在匹兹堡的AISI直接炼铁课题组共同完成的。hoogoven用旋流熔炼器研究了粉矿的预还原和预熔炼,AISI课题组研究了间歇槽熔炼工艺。1995年10月双方进行了技术交流,并联合进行工艺过程的开发。

关键词：炼铁熔炼器旋流转换炉 CCF装置工艺设计

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Microstructural, corrosion and mechanical behavior of two-step plasma electrolyte oxidation ceramic coatings

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Transactions of Nonferrous Metals Society of China 2017年第10期27卷 2225-2233页

作者： h.KhANMOhAMMADI S.R.ALLAhKARAM N.TOWhIDI Mechanically Assisted Corrosion Laboratory School of Metallurgy and Materials EngineeringCollege of Engineering University of Tehran P. O. Box 11155-4563 Tehran Iran

Plasma electrolytic oxidation(PEO)is considered as a cost effective and environmentally friendly surface treatmentprocess for improving surface properties of light *** formation of ceramic coatings on Ti6Al4V alloy was reported bytwo-step PEO process and its structural,electrochemical and mechanical properties with the coated samples were compared byone-step PEO process in an alkaline *** structural properties were studied using field-emission scanning microscope(FESEM)and X-ray diffraction(XRD).Electrochemical studies were carried out using linear polarization method and in additionmechanical behaviors were investigated by means of knoop microhardness and nanoindentation *** showed that thesecond step process resulted in an increase of both porosity percentage and average pore diameter on the *** two-stepprocess resulted in a small increase of thickness from about12.5to13.0μ*** test results showed that applying thesecond step resulted in the decrease of both polarization resistance from1800.2to412.5kΩ/cm2and protection efficiency from97.8%to90.5%.Finally,the nanoindentation results indicated that the PEO coatings became softer but more ductile after applyingthe second processing step in acidic electrolyte.

关键词： plasma electrolytic oxidation microstructure corrosion nanoindentation

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一种简单实用之妊娠快速试验

中华妇产科杂志 1953年第3期1卷 206-208页

作者： h.Reiss J.Reitinger 高寅春

在许多生物性妊娠试验以外,对于发现一种可靠而迅速的化学试验的企图,已醞釀很久,在有关文献中可以找到这方面的研究。1923年 honda 氏已能用化学方法证明孕妇尿中织铵酸(histidin)之排量增加,Voge 氏已用 knoop 氏溴水反应法作妊娠诊断...

在许多生物性妊娠试验以外,对于发现一种可靠而迅速的化学试验的企图,已醞釀很久,在有关文献中可以找到这方面的研究。1923年 honda 氏已能用化学方法证明孕妇尿中织铵酸(histidin)之排量增加,Voge 氏已用 knoop 氏溴水反应法作妊娠诊断,由于此试验之结果不太满意,Kopeller-Adler 氏及其他学者将此试验改良,消除其缺点的根源,以冀得到较优良结果,可是因此方法却变为复杂。Werle 氏及 Fffkemann 氏根据孕妇血清之组

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