Reaction mechanism and electrochemical characterization of a Sn-Co-C composite anode for Li-ion batteries

被引：51

作者：

Lee, Sung-Il ^{[1
]}

Yoon, Sukeun ^{[1
]}

Park, Cheol-Min ^{[1
]}

Lee, Jae-Myung ^{[1
]}

Kim, Hansu ^{[2
]}

Im, Dongmin ^{[2
]}

Doo, Seok-Gwang ^{[2
]}

Sohn, Hun-Joon ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South Korea

[2] Samsung Adv Inst Technol, Energy & Environm Lab, Giheung Gu, Kyung Gi Do, South Korea

来源：

ELECTROCHIMICA ACTA | 2008年 / 54卷 / 02期

关键词：

Co3Sn2; CoSn2; Anode; Lithium battery; EXAFS;

D O I：

10.1016/j.electacta.2008.07.070

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A Sn-Co-C composite is prepared by mechanochemical synthesis using tin powder and a cobalt-carbon composite through the pyrolysis of Co (III)-acetylacetonate. The composite is studied as an anode material for Li secondary batteries. The reaction mechanism is investigated using various analytical techniques. Although the composite is initially composed of Co3Sn2 as the major phase and CoSn2 as the minor one, the Co3Sn2 transformed into CoSn2 during the second cycle and remained in this form throughout the following cycles. The Sn-Co-C composite shows an excellent capacity retention of 435 mAh g(-1) over 100 cycles. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：364 / 369

页数：6

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