Study of the cycling performance of finely dispersed lithium alloy composite electrodes under high Li-utilization

被引：65

作者：

Yang, J ^{[1
]}

Takeda, Y ^{[1
]}

Imanishi, N ^{[1
]}

Ichikawa, T ^{[1
]}

Yamamoto, O ^{[1
]}

机构：

[1] Mie Univ, Fac Engn, Dept Chem, Tsu, Mie 5140008, Japan

来源：

JOURNAL OF POWER SOURCES | 1999年 / 79卷 / 02期

关键词：

lithium secondary cells; lithium alloy composite electrodes; ultra-fine powders; cycling performance;

D O I：

10.1016/S0378-7753(99)00180-9

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 cycling behavior of lithium alloy composite electrodes in liquid electrolyte composed of 1 M LiClO4/EC + DEC (1:1) was examined. The lithium alloys were formed by electrochemical insertion of lithium into metallic host matrices (Al, Sn and SnSbx powders). With a wide potential cut-off between 0.1 and 1.2 V vs. Li/Li+, the capacity retention (ca. 550 mA h/g) of Sn-based electrodes during cycling can be remarkably improved by decreasing the particle size of the host materials to near nano-scale. Moreover, the cycle life performance and coulombic efficiency are also dependent on polymer binder and conducting additive as the other components of the electrodes. Under a similar condition, it was found that an ultra-fine Al powder was not fit for host material due to a strong passivation of the electrode after Li-insertion. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：220 / 224

页数：5

共 13 条

[1] INVESTIGATION OF A TERNARY LITHIUM ALLOY MIXED-CONDUCTING MATRIX ELECTRODE AT AMBIENT-TEMPERATURE [J].