Evidence for nano-Si clusters in amorphous SiO anode materials for rechargeable Li-ion batteries

被引：27
|
作者：
Sepehri-Amin, H. [1 ]
Ohkubo, T. [1 ]
Kodzuka, M. [1 ]
Yamamura, H. [2 ]
Saito, T. [2 ]
Iba, H. [2 ]
Hono, K. [1 ]
机构：
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
[2] Toyota Motor Co Ltd, Battery Res Div, Higashifuji Tech Ctr, Shizuoka 4101193, Japan
来源：
SCRIPTA MATERIALIA | 2013年 / 69卷 / 01期
关键词：
SiO; Li-ion batteries; Atom probe tomography; Microstructure; FINE SILICON PARTICLES; LITHIUM BATTERIES; MONOXIDE; IMPROVEMENT; COMPOSITE;
D O I：
10.1016/j.scriptamat.2013.02.040
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Atom probe tomography and high resolution transmission electron microscopy have shown the presence of nano-sized amorphous Si clusters in non-disproportionated amorphous SiO powders are under consideration for anode materials in Li-ion batteries. After Li insertion/extraction, no change was found in the chemistry and structure of the Si clusters. However, Li atoms were found to be trapped at the amorphous SiO phase after Li insertion/extraction, which may be attributed to the large capacity fade after the first charge/discharge cycle. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：92 / 95
页数：4
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