Electrochemical lithiation reactions of Cu6Sn5 and their reaction products

被引：68
作者：
Choi, W
Lee, JY
Lim, HS
机构：
[1] Samsung SDI Corp R&D Ctr, Energy Lab, Yongin 449577, Gyeonggi Prov, South Korea
[2] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2004年 / 6卷 / 08期
关键词：
Li-Cu-Sn alloy; alloy anode; intermetallic compound; transmission electron microscopy;
D O I：
10.1016/j.elecom.2004.05.018
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Electrochemical lithiation reactions of a thin-film Cu6Sn5 alloy electrode were studied in an organic carbonate electrolyte containing LiPF6 salt using conventional charge-discharge techniques and analysing the reaction products by transmission electron microscopy (TEM). A partially lithiated phase, LixCu6Sn5, (where x < 3), that appears to be a solid solution of Li in the basic crystal structure of Cu6Sn5 was identified by TEM in a Cu6Sn5-alloy electrode discharged at 0.5 V. At a further cathodic potential of 0.3 V the formation of Li2CuSn was observed in agreement with earlier reports. At the potential close to that of the Li-metal plating (similar to0.01 V discharge cut-off) Li7Sn2 phase was identified as the main composition without observation of a further lithiated phase beyond Li7Sn2. (C) 2004 Elsevier B.V. All rights reserved.
引用
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页码：816 / 820
页数：5
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