Electrochemical control of a Li metal anode interface: improvement of Li cyclability by inorganic additives compatible with electrolytes

被引：66

作者：

Ishikawa, M ^{[1
]}

Machino, S ^{[1
]}

Morita, M ^{[1
]}

机构：

[1] Yamaguchi Univ, Fac Engn, Dept Chem Engn & Appl Chem, Ube, Yamaguchi 7558611, Japan

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1999年 / 473卷 / 1-2期

关键词：

lithium metal anode; rechargeable lithium battery; additive; cycling efficiency;

D O I：

10.1016/S0022-0728(99)00170-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The addition of aluminum iodide (AlI(3)) to a mixed electrolyte, consisting of propylene carbonate (PC) and dimethyl carbonate (DMC), containing lithium hexafluorophosphate (LiPF(6)), was found to reduce the charge-discharge cyclability of a Li metal electrode. In contrast, addition of magnesium iodide (MgI(2)) improved the Li cycling efficiency in the same electrolyte. The origin of the addition effects on the cyclability was investigated by electrochemical and chemical analyses; ac impedance and X-ray photoelectron spectroscopy revealed that the addition of MgI(2) to the electrolyte provided a low-resistance interface on the Li anode while in the presence of AlI(3) the decomposition products of PF(6)(-) at the Li interface impeded the charge-discharge cycling of Li. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：279 / 284

页数：6

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