Journal
JOURNAL OF POWER SOURCES
Volume 265, Issue -, Pages 140-148Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2014.04.113
Keywords
In-situ AFM; HOPG; Graphite; SEI; Lithium ion batteries
Funding
- General Motors Company
- Department of Energy [DEFG36-05GO85005]
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Solid-electrolyte interphase (SEI) formation at highly ordered pyrolytic graphite (HOPG) surface has been studied with in-situ AFM. The morphology and thickness of both the top particle layer of the SEI and the bottom layer of the SEI that was caused by lithium insertion were investigated. The formation mechanism of the SEI was proposed accordingly. Ex-situ FESEM and EDS were also used to analyze the composition of the electrode after cycling to confirm the proposed mechanism. (c) 2014 Elsevier B.V. All rights reserved.
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