Enhancement of cyclability using recombination reaction of Cu for Sn2Fe nanocomposite anode for lithium-ion batteries

被引：21

作者：

Lee, Jae-Myung ^{[1
]}

Chang, Won-Seok ^{[1
]}

Yu, Byeong-Chul ^{[1
]}

Kim, Hansu ^{[2
]}

Im, Dongmin ^{[2
]}

Doo, Seok-Gwang ^{[2
]}

Sohn, Hun-Joon ^{[1
]}

机构：

[1] Seoul Natl Univ, Res Ctr Energy Convers & Storage, Dept Mat Sci & Engn, Seoul 151742, South Korea

[2] Samsung Elect, Samsung Adv Inst Technol, Energy & Environm Lab, Yongin 446712, Gyeonggi Gi Do, South Korea

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 07期

关键词：

Lithium-ion batteries; Anode; Sn-based composite; Cu mixing; ALLOYED SN-FE(-C) POWDERS; SITU X-RAY; ELECTROCHEMICAL LITHIATION; TIN; LI; ELECTRODES; CAPACITY; CU6SN5; OXIDE;

D O I：

10.1016/j.elecom.2010.04.023

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A Sn2Fe/C nanocomposite containing Cu was evaluated as an anode material for rechargeable lithium-ion batteries. The electrochemical reaction mechanism of this nanocomposite was examined by ex-situ X-ray diffraction and high resolution transmission electron microscopy. The Sn2Fe/C nanocomposite containing Cu showed dramatically improved cycling performance. The enhanced cyclability of the Sn2Fe/C nanocomposite containing Cu was attributed to both amorphization of the Sn2Fe phase and a recombination reaction between Sn and Cu during the charging step. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：928 / 932

页数：5

共 27 条

[1] Electrochemical lithiation reactions of Cu6Sn5 and their reaction products [J].