In situ scanning vibrating electrode technique for lithium metal anodes

被引:73
作者
Ishikawa, M
Morita, M
Matsuda, Y
机构
[1] Yamaguchi Univ, Fac Engn, Dept Appl Chem & Chem Engn, Ube, Yamaguchi 755, Japan
[2] Kansai Univ, Fac Engn, Dept Appl Chem, Suita, Osaka 564, Japan
关键词
rechargeable lithium batteries; lithium metal anodes; coulombic efficiency;
D O I
10.1016/S0378-7753(97)02524-X
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
The effect of the inorganic additives to electrolytes, aluminum iodide (AlI3) and tin(II) iodide, on the charge/discharge coulombic efficiency of a lithium (Li) metal anode has been investigated in binary solvent systems, i.e., propylene carbonate (PC) mixed with 2-methyltetrahydrofuran (2Me-THF) containing lithium perchlorate (:LiClO4), PC + 2Me-THF/LiClO4,, and PC mixed with 1,2-dimethoxyethane (DME) containing LiClO4,, PC + DME/LiClO4,,. AlI3 improved the coulombic efficiency of the Li metal anode in both the binary solvent systems. Two-dimensional Li ionic currents at the interface of the Li metal anode were monitored by using in situ scanning vibrating electrode technique (SVET) in the representative binary system, PC + 2Me-THF/LiClO4,, in;he absence and presence of the additives. The relationship between the coulombic efficiency and the Li ionic current distribution on the anode was discussed. (C) 1997 Published by Elsevier Science S.A.
引用
收藏
页码:501 / 505
页数:5
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