✦ LIBER ✦

A novel perspective on the formation of the solid electrolyte interphase on the graphite electrode for lithium-ion batteries

✍ Scribed by Jian Yan; Jian Zhang; Yu-Chang Su; Xi-Gui Zhang; Bao-Jia Xia

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 819 KB
Volume: 55
Category: Article
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2009.10.068

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✦ Synopsis

In this paper, we describe how the mechanism of formation of a protective film [the solid electrolyte interphase (or interface) (SEI)] on a graphite electrode for Li-ion batteries was investigated from the novel perspective of precipitation of the final decomposition products that arise from the reduction of a nonaqueous electrolyte solution in contact with the graphite electrode. Within the framework of this new perspective, we can elegantly account for the compositional and structural differences between the basal-plane and edge-plane SEIs and for the origins of the multi-layer structure and the parabolic growth law of the SEIs on both the edge-plane and basal-plane surfaces of the graphite electrode.

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