Advanced Transmission Electron Microscopy for Electrode and Solid‐Electrolyte Materials in Lithium‐Ion Batteries,Small Methods

当前位置： X-MOL 学术 › Small Methods › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Advanced Transmission Electron Microscopy for Electrode and Solid‐Electrolyte Materials in Lithium‐Ion Batteries
Small Methods ( IF 10.7 ) Pub Date : 2018-06-03 , DOI: 10.1002/smtd.201800006
Xiaozhi Liu _{1,

2} , Lin Gu _{1,

2,

3}

Affiliation

Understanding the reaction processes of electrode and electrolyte materials is important for achieving high‐performance lithium‐ion batteries (LIBs). Currently, transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM) can readily characterize the structural and chemical features of these materials from the micrometer scale to the atomic scale. In situ (S)TEM can further monitor their non‐ or quasi‐equilibrated states in real time. Here, the recent progress in unraveling the crystal and electronic structures of the electrode and solid‐electrolyte materials using ex situ and in situ (S)TEM is reviewed. Three fundamental functions, including imaging, diffraction, and spectroscopy, are jointly used to decipher the configuration of the defects and ordering, the variations near the surfaces and across the interfaces, and the evolution of the coexisting phases. Novel and deep insights are proposed for the material growth, reaction, and capacity fading mechanisms. Advanced (S)TEM studies for LIB materials pose numerous challenges and perspectives, including the development and application of local diffraction analysis, large‐scale phase mapping techniques, 3D reconstruction, and cryoelectron microscopy, which are further discussed.

中文翻译：

锂离子电池中电极和固体电解质材料的高级透射电子显微镜

了解电极和电解质材料的反应过程对于实现高性能锂离子电池（LIB）至关重要。目前，透射电子显微镜（TEM）和扫描透射电子显微镜（STEM）可以很容易地表征这些材料从微米级到原子级的结构和化学特征。原位（S）TEM可以进一步实时监控其非平衡或准平衡状态。在此，对使用异位和原位（S）TEM分解电极和固体电解质材料的晶体和电子结构的最新进展进行了综述。结合使用三个基本功能，包括成像，衍射和光谱学，可以对缺陷的配置和有序性，表面附近和整个界面的变化进行解密，以及共存阶段的演变。提出了关于物质生长，反应和容量衰减机制的新颖而深刻的见解。对LIB材料进行的高级（S）TEM研究带来了许多挑战和观点，包括局部衍射分析，大规模相图技术，3D重建和低温电子显微镜的开发和应用，将对此进行进一步讨论。

更新日期：2018-06-03

点击分享查看原文

点击收藏

阅读更多本刊最新论文