相关实验视频

Updated: Sep 14, 2025

Nanoscale Characterization of Liquid-Solid Interfaces by Coupling Cryo-Focused Ion Beam Milling with Scanning Electron Microscopy and Spectroscopy

Nanoscale Characterization of Liquid-Solid Interfaces by Coupling Cryo-Focused Ion Beam Milling with Scanning Electron Microscopy and Spectroscopy

Published on: July 14, 2022

推进离子电池阴极分析与冷性Ag涂层APT标本

Poonam Yadav¹, Leonardo Shoji Aota¹, Eric V Woods¹

¹Microstructure Physics and Alloy Design, Max Planck Institute for Sustainable Materials, Max-Planck-Straße 1, Düsseldorf 40237, Germany.

Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada

|July 24, 2025

概括

银涂层使离子电池层叠氧化物阴极的原子探头断层扫描分析成为可能. 这种技术揭示了组合异质性,这对于提高电池性能和寿命至关重要.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
电池技术电池技术

背景情况:

层状氧化物阴极是高能离子电池 (SIB) 的关键.
容量衰减和结构变化限制了它们的实际应用,特别是在更高的电压下.
了解原子尺度上的多元件阴极组成变化至关重要.

研究的目的:

为了研究SIBs的分层氧化物阴极中的组成异质性.
为了克服原子探头断层扫描 (APT) 分析这些材料的挑战.
为了实现对空气敏感的SIB阴极材料的原子尺度表征.

主要方法:

原子探头断层扫描 (APT) 用于3D化学分析.
在低温温度下进行聚焦离子束 (FIB) 研磨.
在APT分析之前,在SIB阴极样本上涂上银 (Ag) 涂层.

主要成果:

证明了对空气敏感的离子层氧化物阴极材料的成功APT分析.
展示了银涂层在防止APT期间偏好的金属迁移方面的有效性.
启用了在阴极材料内构成异质性的详细3D可视化.

结论:

银涂层是一种可行的方法,可以用于APT分析SIB分层氧化物阴极.
这种方法为构成异质性提供了原子级的洞察力.
了解这种异质性对于提高SIB阴极性能和寿命至关重要.

关键词:

在现场FIB金属涂层.原子探头断层扫描 (tomography) 是一种原子探头断层扫描.电池阴极是电池的阴极.低温聚焦离子束的冷却离子电池是一种离子电池.

更多相关视频

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

Failure Analysis of Batteries Using Synchrotron-based Hard X-ray Microtomography

Failure Analysis of Batteries Using Synchrotron-based Hard X-ray Microtomography

Published on: August 26, 2015

相关概念视频

Preparation of Samples for Electron Microscopy

Preparation of Samples for Electron Microscopy

To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...