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Towards high-performance lithium metal anodes via the modification of solid electrolyte interphases

Journal of Energy Chemistry 2020年第6期29卷 7-17,I0001页

作者： Zhen Hou Jiaolong Zhang Wenhui Wang Qianwen Chen Baohua Li Chaolin Li Shenzhen Key Laboratory of Organic Pollution Prevention and Control Environmental Science and Engineering Research CenterHarbin Institute of TechnologyShenzhen 518055GuangdongChina Department of Chemistry Southern University of Science and Technology(SUSTech)Shenzhen 518055GuangdongChina Shenzhen Key Laboratory on Power Battery Safety Research and Shenzhen Geim Graphene Center Tsinghua Shenzhen International Graduate SchoolShenzhen 518055GuangdongChina

Li metal has been regarded as one of the most promising anodes for high-energy-density storage systems due to its high theoretical capacity and lowest electrochemical ***,an unstable and non-uniform solid electrolyte interphase(SEI)deriving from the spontaneous reaction between Li metal anode and electrolyte causes uneven Li deposition,resulting in the growth of Li dendrites and low Coulombic efficiency,which have greatly hindered the practical application of Li metal ***,the construction of a stable SEI is an effective approach to suppress the growth of Li dendrites and enhance the electrochemical performances of Li metal *** this review,we firstly introduce the formation process of inferior SEI of Li metal anode and the corresponding challenges caused by the unstable ***,recent progresses to modify SEI layer through the regulation of electrolyte compositions and exsitu protective coating are ***,the remained issues,challenges,and perspectives are also proposed on the basis of current research status and progress.

关键词： Li metal anode Coulombic efficiency Dendrites Solid electrolyte interphases Coating

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Carbon nanotubes:Evaluation of toxicity at biointerfaces

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Journal of Pharmaceutical Analysis 2019年第5期9卷 293-300页

作者： Debashish Mohanta Soma Patnaik Sanchit Sood Nilanjan Das Department of Biotechnology Manav Rachna International Institute of Research Studies Faridabad Haryana India Accendere KMS New Delhi India

Carbon nanotubes (CNTs) are a class of carbon allotropes with interesting properties that make them productive materials for usage in various disciplines of nanotechnology such as in electronics equipments, optics and therapeutics. They exhibit distinguished properties viz., strength, and high electrical and heat conductivity. Their uniqueness can be attributed due to the bonding pattern present between the atoms which are very strong and also exhibit high extreme aspect ratios. CNTs are classified as singlewalled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) on the basis of number of sidewalls present and the way they are arranged spatially. Application of CNTs to improve the performance of many products, especially in healthcare, has led to an occupational and public exposure to these nanomaterials. Hence, it becomes a major concern to analyze the issues pertaining to the toxicity of CNTs and find the best suitable ways to counter those challenges. This review summarizes the toxicity issues of CNTs in vitro and in vivo in different organ systems (bio interphases) of the body that result in cellular toxicity.

关键词： Bio interphases Carbon nanotubes (CNTs) In vivo toxicity In vitro toxicity

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Influence of Reinforcement on the Reactivity LayerFormation in Ti-Al Intermetallics DiscontinuouslyReinforced Al-Si-Mg Alloys

Influence of Reinforcement on the Reactivity LayerFormation ...

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第十三届国际复合材料会议

作者： D.J.Busquets N.Martinez M.D.Salvador V.Amigó Departamento de Ingeniería Mecfánica y de Materiales. Universidad Politécnica de Valencia Camino de Vera s/n 46022-Valencia Spain Departamento de Ingeniería Mecfánica y de Materiales. Universidad Politécnica de Valencia Camino de Vera s/n 46022-Valencia Spain Departamento de Ingeniería Mecfánica y de Materiales. Universidad Politécnica de Valencia Camino de Vera s/n 46022-Valencia Spain Departamento de Ingeniería Mecfánica y de Materiales. Universidad Politécnica de Valencia Camino de Vera s/n 46022-Valencia Spain

＜正＞During fabrication and posterior heat treatments of MMCs, it is possible that reaction products and intherphases can appear in case the matrix is a high strength heat-treatable alloy. The effects of the type and volume fraction of Ti-Al intermetallic reinforcements on the reactivity layer formation of Ti-Al/6061 Al metal matrix composites （MMCs） was investigated. With the aim of studying more deeply reinforcement effects over composites used in this work, different analysis were performed. These were based upon microhardness tests in order to estimate mechanical properties as well as cycle polarization to evaluate corrosion resistance.

关键词： aluminum matrix composite titanium intermetallics heat treatment reactivity layer interface interphases powder metallurgy

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