Direct observation of inhomogeneous solid electrolyte interphase on MnO anode with atomic force microscopy and spectroscopy.
Direct observation of inhomogeneous solid electrolyte interphase on MnO anode with atomic force microscopy and spectroscopy.
复制标题
DOI：
10.1021/nl300570d
复制
发表时间：
2012-03
期刊：
影响因子：
10.8
通讯作者：
Jie Zhang;Rui Wang;Xiaocheng Yang;W. Lu;Xiaodong Wu;Xiaoping Wang;Hong Li;Liwei Chen
中科院分区：
文献类型：
--
作者：
Jie Zhang;Rui Wang;Xiaocheng Yang;W. Lu;Xiaodong Wu;Xiaoping Wang;Hong Li;Liwei Chen
固体电解质中间相（SEI）是在锂离子电池（LIB）电极上原位形成的薄涂层。SEI的力学性能在很大程度上决定了LIB的循环性能和安全性，但很少被研究。在这里，我们定量报告的杨氏模量的SEI膜的MnO阳极。SEI膜在形貌、结构和力学性能上的不均匀性为电极表面SEI膜的发展提供了新的视角。此外，在这项研究中建立的定量方法开辟了一个新的途径，直接调查的SEI性能在各种电极材料系统。
Solid electrolyte interphase (SEI) is an in situ formed thin coating on lithium ion battery (LIB) electrodes. The mechanical property of SEI largely defines the cycling performance and the safety of LIBs but has been rarely investigated. Here, we report quantitatively the Young's modulus of SEI films on MnO anodes. The inhomogeneity of SEI film in morphology, structure, and mechanical properties provides new insights to the evolution of SEI on electrodes. Furthermore, the quantitative methodology established in this study opens a new approach to direct investigation of SEI properties in various electrode materials systems.