A new approach to surface properties of solid electrolyte interphase on a graphite negative electrode

被引:51
作者
Lee, Seon-Hong [1 ]
You, Ho-Gon [1 ]
Han, Kyu-Suk [1 ]
Kim, Jake [1 ]
Jung, In-Ho [1 ]
Song, Joo-Han [1 ]
机构
[1] Samsung SDI Co Ltd, Corp R&D Ctr, Yongin 446577, Gyunggido, South Korea
关键词
Lithium-ion battery; Graphite; Solid electrolyte interphase; Low acceleration voltage; Monte Carlo simulation; Ion etching; PROPYLENE CARBONATE; LI-ION; ELECTROCHEMICAL-BEHAVIOR; LITHIUM INTERCALATION; SEM; MICROSCOPY; ADDITIVES; BATTERIES; MECHANISM;
D O I
10.1016/j.jpowsour.2013.08.105
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070305 [高分子化学与物理];
摘要
A new method for observing the outermost surface morphology and the thickness of solid electrolyte interphase (SEI) are presented. Low acceleration voltage in extreme high resolution scanning electron microscopy (XHR-SEM) provides detailed information on the SEI surface morphology due to secondary electron contrast mechanism. Also, XHR-SEM under low acceleration voltage with low energy induced ion etching in x-ray photoelectron spectroscopy (XPS) studies provides valuable information on the SEI layer thickness. More detailed properties of the SEI layer were investigated by transmission electron microscopy (TEM). (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:307 / 313
页数:7
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