检索结果-南通市图书馆

Solvent-Free Manufacturing of Lithium-Ion Battery Electrodes via Cold Plasma

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2024年第1期7卷 28-33页

作者： Zhiming Liang Tianyi Li Holden Chi Joseph Ziegelbauer Kai Sun Ming Wang Wei Zhang Tuo Liu Yang-Tse Cheng Zonghai Chen Xiaohong Gayden Chunmei Ban Paul M.Rady Department of Mechanical engineering University of Colorado BoulderBoulder CO 80309USA Advanced Photon Source Argonne National LaboratoryLemont IL 60439USA Intecells inc. Southfield MI 48084USA Department of Materials Science and engineering Michigan Center for Materials CharacterizationUniversity of MichiganAnn Arbor MI 48109USA Department of Chemical and Materials engineering University of KentuckyLexington KY 40506USA Department of Chemistry University of KentuckyLexington KY 40506USA Chemical Sciences and engineering Division Argonne National LaboratoryLemont IL 60439USA

Slurry casting has been used to fabricate lithium-ion battery electrodes for decades,which involves toxic and expensive organic solvents followed by high-cost vacuum drying and electrode *** work presents a new manufacturing method using a nonthermal plasma to create inter-particle binding without using any polymeric binding materials,enabling solvent-free manufacturing electrodes with any electrochemistry of *** cold-plasma-coating technique enables fabricating electrodes with thickness(>200 pm),high mass loading(>30 mg cm^(-2)),high peel strength,and the ability to print lithium-ion batteries in an arbitrary *** crosscutting,chemistry agnostic,platform technology would inc.ease energy density,eliminate the use of solvents,vacuum drying,and calendering processes during production,and reduce manufacturing cost for current and future cell ***,lithium iron phosphate and lithium cobalt oxide were used as examples to demonstrate the efficacy of the cold-plasma-coating *** is found that the mechanical peel strength of cold-plasma-coating-manufactured lithium iron phosphate is over an order of magnitude higher than that of slurry-casted lithium iron phosphate *** cells assembled with a graphite anode and the cold-plasma-coating-lithium iron phosphate cathode offer highly reversible cycling performance with a capacity retention of 81.6%over 500 *** the highly conductive cathode material lithium cobalt oxide,an areal capacity of 4.2 mAh cm^(-2)at 0.2 C is *** anticipate that this new,highly scalable manufacturing technique will redefine global lithium-ion battery manufacturing providing significantly reduced plant footprints and material costs.

关键词： cold plasma deposition lithium-ion battery solvent-free manufacturing

Interdigital MnO_(2)/PEDOT Alternating Stacked Microelectrodes for High-Performance On-Chip Microsupercapacitor and Humidity Sensing

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2024年第2期7卷 257-267页

作者： Muhammad Tahir Lihong Li Liang He Zhongyuan Xiang Zeyu Ma Waqas Ali Haider Xiaoqiao Liao Yanlin Song Key Laboratory of Green Printing CAS Research/Education Centre for Excellence in Molecular SciencesInstitute of Chemistry Chinese Academy of Sciences(ICCAS)Beijing 100190China School of Mechanical engineering Sichuan UniversityChengdu 610065China A.S.Chemical Laboratories inc. Concord L4K 4M4ON Canada

For microelectronic devices,the on-chip microsupercapacitors with facile construction and high performance,are attracting researchers'prior consideration due to their high compatibility with modern ***,we proposed interchanging interdigital Au-/MnO_(2)/polyethylene dioxythiophene stacked microsupercapacitor based on a microfabrication process followed by successive electrochemical *** stacked configuration of two pseudocapacitive active microelectrodes meritoriously leads to an enhanced contact area between MnO_(2)and the conductive and electroactive layer of polyethylene dioxythiophene,hence providing excellent electron transport and diffusion pathways of electrolyte ions,resulting in inc.eased pseudocapacitance of MnO_(2)and polyethylene *** stacked quasi-solid-state microsupercapacitors delivered the maximum specific capacitance of 43 mF cm^(-2)(211.9 F cm^(-3)),an energy density of 3.8μWh cm^(-2)(at a voltage window of 0.8 V)and 5.1μWh cm^(-2)(at a voltage window of 1.0 V)with excellent rate capability(96.6%at 2 mA cm^(-2))and cycling performance of 85.3%retention of initial capacitance after 10000 consecutive cycles at a current density of 5 mA cm^(-2),higher than those of ever reported polyethylene dioxythiophene and MnO_(2)-based planar *** from the favorable morphology,bilayer microsupercapacitor is utilized as a flexible humidity sensor with a response/relaxation time superior to those of some commercially available integrated *** strategy will be of significance in developing high-performance on-chip integrated microsupercapacitors/microsensors at low cost and environment-friendly routes.

关键词： electrochemical polymerization microsensor microsupercapacitor stacked microelectrode

Templates for the synthesis of zeolites

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2024年第4期43卷 48-58页

作者： Huimin Luan Qinming Wu Jianping Wu Xiangju Meng Feng-Shou Xiao College of Chemical and Biological engineering Zhejiang UniversityHangzhou310027China Kente Catalysts inc. Fengxi West RoadModern Industrial ClusterXianju CountyZhejiang317300China Key Laboratory of Applied Chemistry of Zhejiang Provinc. Department of ChemistryZhejiang UniversityHangzhou310007China

Though zeolites have been successfully synthesized for several decades,the roles of templates for zeolite synthesis are still not fully understood ***,many types of templates have been employed such as inorganic alkali metal ions,organic quaternary ammonium cations,organic amines,organic quaternary phosphonium cations,metal complexes and zeolite seeds,and the roles are mainly summarized into three aspects:structure-directing,space-filling and *** order to synthesize zeolites efficiently,the proposed princ.ples to guide zeolite synthesis are the stabilization of energy between templates and zeolite framework,charge density mis-matching(CDM)and structure matching between zeolite frameworks and *** purpose of this review is to briefly summarize the progresses in recent years,clearly showing the roles of the templates for zeolite synthesis.

关键词： Zeolites Templates Zeolite synthesis Zeolite structure

Research on the Nursing Effect of Glycolipids on Acne Skin

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Detergent & Cosmetics 2024年第3期9卷 33-40页

作者： Wang Huiyu Zha Jiansheng Tong Li Yan Xiaodong Wang Jing Spec-Chem Industry inc. Ltd.China School of Chemistry and Materials engineering Jiangnan UniversityChina

Glycolipids are lipid compounds,which are a type of amphiphilic molecules containing glycosyl *** experiment studied the efficacy of glycolipids on acne skin care from the aspects of antibacterial,anti-inflammatory,anti-allergic,oil-control,soothing and *** results show that glycolipids have excellent antibacterial properties against ***;when the dosage of glycolipids reaches 10μg/mL,the inhibition rate of glycolipids on lipid synthesis in SZ95 cells can reach 20%;glycolipids can induce LPS induction RAW264.7 cells have the inhibitory effect on the release of inflammatory factors IL-6 and NO;when the glycolipids concentration is 15 mg/mL,the inhibition rate of glycolipids on hyaluronidase reaches 45.8%;when the glycolipids concentration is 25μg/mL,the inhibition rate on calcium ion concentration reaches 45.3%;glycolipids have a significant promoting effect on wound ***,human efficacy evaluation shows that glycolipids products have comprehensive care effects on acne *** study will help further promote the application of glycolipids in cosmetic products,especially in skin care products for acne skin.

关键词： glycolipids acne skin oil-control antibacterial anti-inflammatory

Droplet morphology analysis of drop-on-demand inkjet printing

在线全文

学校读者我要写书评

暂无评论

China Foundry 2024年第1期21卷 20-28页

作者： Hu-xiang Xia Takechi Kensuke Tajima Shin Kawamura Yoshiumi Qing-yan Xu Key Laboratory for Advanced Materials Processing Technology(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Toyota Central R&D Labs. Inc.41-1 Yokomichi NagakuteAichi 480-1192Japan Frontier Research Center Toyota Motor Corporation1 Toyota-ChoToyotaAichi 471-8572Japan

As an accurate 2D/3D fabrication tool,inkjet printing technology has great potential in preparation of micro electronic *** morphology of droplets produced by the inkjet printer has a great impact on the accuracy of *** this study,the drop-on-demand(DoD)inkjet simulation model was established,and the accuracy of the simulation model was verified by corresponding *** simulation result shows that the velocity of the droplet front and tail,as well as the time to disconnect from the nozzle is mainly affected by density(ρ),viscosity(μ)and surface tension(σ)of *** the liquid filament is about to disconnect from the nozzle,the filament length and filament front velocity are found to have a linear correlation withσ/ρμand ln(ρ/(μσ1/2)).

关键词： microdevice fabrication inkjet printing droplet morphology modeling and simulation

Low-loss and polarization insensitive 32×4 optical switch for ROADM applications

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第5期13卷 875-884页

作者： Xiaotian Zhu Xiang Wang Yanlu Huang Liyan Wu Chunfei Zhao Mingzhu Xiao Luyi Wang Roy Davidson Yanni Ou Brent E.Little Sai T.Chu Department of Physics City University of Hong KongTat Chee AvenueHong KongChina. QXP Technologies inc. NO.15th Shanglinyuan 1st RoadXi’anShaanxi 710119China. State Key Laboratory of Information of Photonics and Optical Communications School of Electronic EngineeringBeijing University of Posts and TelecommunicationsBeijing 100876China

Integrated switches play a crucial role in the development of reconfigurable optical add-drop multiplexers(ROADMs)that have greater flexibility and compactness,ultimately leading to robust single-chip *** decades of research on switches with various structures and platforms,achieving a balance between dense integration,low insertion loss(IL),and polarization-dependent loss(PDL)remains a significant *** this paper,we propose and demonstrate a 32×4 optical switch using high-index doped silica glass(HDSG)for ROADM *** switch is designed to route any of the 32 inputs to the express ports or drop any channels from 32 inputs to the target 4 drop ports or add any of the 4 ports to any of the 32 express *** switch comprises 188 MachZehnder Interferometer(MZI)type switch elements,88 optical vias for the 44 optical bridges,and 618 waveguidewaveguide crossings with three-dimensional(3D)*** 1550 nm,the fiber-to-fiber loss for each express channel is below 2 dB,and across the C and L bands,below 3 *** each input channel to all 4 drop/add channels at 1550 nm,the loss is less than 3.5 dB and less than 5 dB across the C and L *** PDLs for all express and input channels to the 4 drop/add channels are below 0.3 dB over the C band,and the crosstalk is under−50 dB for both the C and L bands.

关键词： polarization ROADM optical

Hydrogen embrittlement of retrogression-reaged 7xxx-series aluminum alloys—a comprehensive review

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Materials 2024年

作者： Mohamed Qassem Amir Ershad Fanaei Mousa Javidani Department of Applied Science University of Québec at Chicoutimi Canadian Materials Testing Bureau inc.

Hydrogen embrittlement remains a crucial concern in industries that rely on high-strength *** to hydrogen poses a significant threat to the mechanical integrity of such materials. This review article briefly discusses the fundamentals of hydrogen embrittlement, inc.uding its mechanisms and the effects of various factors, such as chemical composition and environmental conditions. Several heat treatments have been developed to eliminate the risk of hydrogen embrittlement. Among various suggested heat treatments, the retrogression-reaging (RRA) treatment has proven effective in optimizing the balance between mechanical properties and resistance to hydrogen embrittlement. This review highlights the role of RRA treatment in modifying the microstructure of Al-Zn-Mg alloys to enhance their ability to resist hydrogen embrittlement, building on existing *** interesting aspect explored in this article is the intricate relationship between pre-deformation and subsequent RRA treatment. Additionally, the review discusses the use of RRA as a post-weld heat treatment to mitigate the susceptibility of weldments to hydrogen embrittlement. A comprehensive exploration of these topics is beneficial for a thorough understanding of the multifaceted functions of RRA ***, despite its advantages, the widespread adoption of RRA treatment in the industry is hindered by certain challenges. This review addresses these challenges, offering insights into the latest strategies to overcome them.

关键词：

Interfacial Electronic Modulation of Dual-Monodispersed Pt–Ni_(3)S_(2) as Efficacious Bi-Functional Electrocatalysts for Concurrent H_(2) Evolution and Methanol Selective Oxidation

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第4期16卷 415-431页

作者： Qianqian Zhao Bin Zhao Xin Long Renfei Feng Mohsen Shakouri Alisa Paterson Qunfeng Xiao Yu Zhang Xian‑Zhu Fu Jing‑Li Luo Shenzhen Key Laboratory of Energy Electrocatalytic Materials Shenzhen Key Laboratory of Polymer Science and TechnologyGuangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Canadian Light Source inc. SaskatoonSK S7N 0X4Canada Instrumental Analysis Center of Shenzhen University(Lihu Campus) Shenzhen UniversityShenzhen 518055People’s Republic of China

Constructing the efficacious and applicable bifunctional electrocatalysts and establishing out the mechanisms of organic electro-oxidation by replacing anodic oxygen evolution reaction(OER) are critical to the development of electrochemicallydriven technologies for efficient hydrogen production and avoid CO_(2) emission. Herein, the hetero-nanocrystals between monodispersed Pt(~ 2 nm) and Ni_(3)S_(2)(~ 9.6 nm) are constructed as active electrocatalysts through interfacial electronic modulation, which exhibit superior bi-functional activities for methanol selective oxidation and H_(2) generation. The experimental and theoretical studies reveal that the asymmetrical charge distribution at Pt–Ni_(3)S_(2) could be modulated by the electronic interaction at the interface of dual-monodispersed heterojunctions, which thus promote the adsorption/desorption of the chemical intermediates at the interface. As a result, the selective conversion from CH_(3)OH to formate is accomplished at very low potentials(1.45 V) to attain 100 m A cm^(-2) with high electronic utilization rate(~ 98%) and without CO_(2) emission. Meanwhile, the Pt–Ni_(3)S_(2) can simultaneously exhibit a broad potential window with outstanding stability and large current densities for hydrogen evolution reaction(HER) at the cathode. Further, the excellent bi-functional performance is also indicated in the coupled methanol oxidation reaction(MOR)//HER reactor by only requiring a cell voltage of 1.60 V to achieve a current density of 50 m A cm^(-2) with good reusability.

关键词： Dual-monodispersed heterostructure Electronic interactive modulation Reaction mechanism Methanol oxidation reaction Hydrogen generation

Fundamental Study on Response Properties of Structures Constructed on Lunar Regolith

在线全文

学校读者我要写书评

暂无评论

Open Journal of Earthquake Research 2024年第1期13卷 27-40页

作者： Yuji Miyamoto Takaharu Nakano Toshio Kobayashi Department of Architecture and Civil engineering Fukui University of Technology Fukui Japan Graduate School of engineering Osaka University Osaka Japan SANSEI Inc. Tokyo Japan

The Artemis Program, for constructing the lunar base, is in progress. How to design and construct architectural and civil engineering structures in the lunar environment has become an important issue. The lunar surface is covered with soft sand, called regolith, and it is required to protect lunar bases and structures, as well as internal precision equipment, against vibrational disturbances such as moonquakes and meteorite collisions. Therefore, in this study, the static and cyclic triaxial compression tests of the regolith simulant were conducted. The reference strain and equivalent damping factor of the regolith simulant were smaller compared to sandy soil on Earth. In addition, a shaking table test using model specimens was conducted on the response properties of regolith ground alone and structures set on regolith ground. The buried foundation and pile foundation notably suppressed the horizontal response attributed to the rocking component compared to a direct foundation.

关键词： Lunar Development Regolith Soil-Structure Interaction Triaxial Compression Test Shaking Table Test