麦克仪器常见报错信息及解决方法分享
本次网络研讨会主要为大家讲解麦克仪器物理吸附仪、化学吸附仪、压汞仪、密度仪等常见仪器的报错信息的原因以及解决办法，方便大家遇到仪器报错问题时更从容应对。
锂离子电池基础知识及麦克产品在该领域的应用
锂离子电池是一种先进的电池技术，主要由正极、负极、隔膜和电解质四个部分组成。目前，全世界都在关注新能源的研发，针对锂离子电池从原材料前体制作到最终电池生产，Micromeritics拥有可供电池生产各个阶段使用的不同仪器。 为帮助广大用户更深入了解Micromeritics在锂离子电池方面的技术手段，本次研讨会将会讲解锂离子电池的基础知识，以及Micromeritics的不同表征仪器在锂离子电池的研发、生产环节中的应用。内容将涉及锂离子电池中的正极、负极、隔膜、固态电解质等多孔材料的比表面、孔径分布、孔容、颗粒尺寸、密度和粉体宏观性质的测量分析，同时结合部分理论知识和应用案例让大家更好地理解学到的知识。 如您对锂离子电池方面的专业内容感兴趣，欢迎参加我们的网络研讨会。
干法制备LFP和表面改性LFP的物性表征
磷酸铁锂（LFP）正极一直是锂离子电池正极材料中的主要一员，对其生产工艺的改进和其本身的改性也一直是正极材料研究的重点。比如，目前正在发展的干法 LFP 制造工艺，可以节省成本，降低生产环节环境污染。同时干法制备 LFP 也存在一些挑战，这些挑战也和其本身物性相关。又比如，表面疏水改性的 LFP 有利于后端分散制浆，其表面疏水性能的好坏也能通过物性表征说明。 本次网络研讨会，我们将展示如何对干法制备 LFP 和表面改性 LFP 所涉及的一些诸如流动能、密度、颗粒尺寸以及表面能等物性进行表征，以及分析表征结果的背后意义。
用汞侵入孔径分析法测定孔径结构
锂离子电池是一种先进的储能技术，在涉及电气化的可再生和可持续工业解决方案的趋势中发挥着关键作用。它们具有高能量密度、高功率密度和长循环寿命，这推动了锂离子电池的应用。隔膜是锂离子电池中的一个重要部件，它机械地分隔阳极和阴极，同时使含锂离子的电解质具有最大的离子导电性。其设计和性能直接影响电池的容量、循环寿命和安全性能。 Micromeritics AutoPore V 高性能全自动压汞仪使用汞侵入孔径测定法，可用于锂离子电池隔膜和电极的表征。这项技术能够快速且准确地提供对电池安全、能量密度和更长循环寿命等至关重要的性质表征。 本次直播，我们将从孔径分布、渗透率和孔径迂曲度的角度讨论三种锂离子商用隔膜的汞侵入孔径分析结果。
The Influence of Particle Size and Shape on Flow Properties
The size and shape of the particles within a powder are important factors in influencing behaviour, and many well-established techniques exist for measuring these properties. However, over a range of different processes, the relationship between these two parameters and flow properties is less well-understood, and due to the varying demands powders are subjected to by […]
Expanding the Material Characterization “Toolbox” for Excipient and Active Pharmaceutical Ingredient (API) Vendor Qualification
Physical characterization of pharmaceutical excipients is not only a requirement but can also provide data that can be predictive in nature regarding the performance of final dosage forms including tablets, capsules, inhaled dosage forms, transdermals, and others. Manufacturers generally provide some of this physical testing data, such as particle size. In the case of particle […]
Particle Size Determination of Porous Powders Using the SediGraph
Sedimentation analysis based upon Stokes’ Law provides a convenient method for determining particle size distribution (PSD). A single solid (or nonporous) sphere settling in a fluid has a terminal settling velocity which is uniquely related to its diameter. The SediGraph determines particle size distributions using the sedimentation method. By measuring the gravity-induced settling velocities of […]
Suspending Fluid Viscosity Requirements for Gravity Sedimentation Particle Size Analysis
The Micromeritics SediGraph is designed to provide particle size distribution analyses for materials based upon sedimentation of the particles through a liquid of known viscosity and density. Stokes’ Law is used to determine the equivalent spherical diameter of the settling particle from its terminal velocity or sedimentation velocity, v. The velocity is based upon the […]
Free Space Determination with Non-Helium Gases
Free space is conventionally measured using helium because it is nonadsorbing and does not condense at cryogenic temperatures. Helium is, however, relatively scarce on Earth and comes with a high price tag due to its limited availability and the costs associated with its extraction and purification. Despite its rarity, helium is widely used in scientific, […]
The Mayer-Stowe Method for Determining Particle Size Using the AutoPore IV Series Porosimeters Theoretical
Theoretical models of mercury intrusion mechanisms allow information about particle size to be extracted. These models are included in the AutoPore IV Series data reduction package. In 1965, Mayer and Stowe* published a paper on the mercury breakthrough pressure required to penetrate a bed of packed spheres and the subsequent filling of the interstitial void. […]
