Direct Observation of Inhomogeneous Solid Electrolyte Interphase on MnO Anode with Atomic Force Microscopy and Spectroscopy
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- 作者：Jie Zhang ; Rui Wang ; Xiaocheng Yang ; Wei Lu ; Xiaodong Wu ; Xiaoping Wang ; Hong Li ; Liwei Chen
- 刊名：Nano Letters
- 出版年：2012
- 出版时间：April 11, 2012
- 年：2012
- 卷：12
- 期：4
- 页码：2153-2157
- 全文大小：338K
- 年卷期：v.12,no.4(April 11, 2012)
- ISSN：1530-6992
文摘
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鈥檚 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.