Journal
NANO LETTERS
Volume 12, Issue 4, Pages 2153-2157Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl300570d
Keywords
Lithium-ion battery; solid electrolyte interphase; SEI; atomic force microscopy; force spectroscopy
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Funding
- National Basic Research Program of China [2010CB934700]
- National Natural Science Foundation of China [20973122, 10904105]
- Chinese Academy of Sciences [KJCX2-YW-H21]
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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 SET 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.
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