Modified SiO as a high performance anode for Li-ion batteries

被引：171

作者：

Hwa, Yoon ^{[1
]}

Park, Cheol-Min ^{[2
]}

Sohn, Hun-Joon ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea

[2] Kumoh Natl Inst Technol, Sch Adv Mat & Syst Engn, Gumi 730701, Gyeongbuk, South Korea

来源：

JOURNAL OF POWER SOURCES | 2013年 / 222卷

关键词：

Lithium ion battery; Anode; Silicon monoxide; Disproportionation reaction; AMORPHOUS-SILICON MONOXIDE; RECHARGEABLE LITHIUM BATTERIES; ELECTROCHEMICAL PROPERTIES; COMPOSITE ANODE; PARTICLES; INSERTION; ELECTRODE;

D O I：

10.1016/j.jpowsour.2012.08.060

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An anode material with improved electrochemical performances for Li-ion batteries is prepared using the disproportionation reaction of SiO followed by a high energy mechanical milling process. The modified SiO is composed of embedded Si nano-crystallites in a Si-oxide matrix. Si-oxide matrix could be divided into two parts by reactivity with Li-ion. The inactive Si-suboxide matrix would buffer the volume expansion of embedded Si nano-crystallites and active amorphous SiO2 during the lithiation. This modified SiO electrode shows a large reversible capacity, close to 1000 mAh g(-1), and good cyclability, over 50 cycles. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：129 / 134

页数：6

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