Application of carbon-coated aluminum foil for Li-S secondary batteries

被引：0
|
作者：
Li T. [1 ,2 ]
Hong B. [1 ]
Cao H.-W. [2 ]
Liu Y.-X. [1 ]
Yan X.-L. [1 ]
Huang Z.-X. [2 ]
机构：
[1] School of Metallurgy and Environment, Central South University, Changsha
[2] Shenzhen Perfect Power Technology Co., Ltd., Shenzhen
来源：
Hong, Bo (bop_hong@163.com) | 1600年 / Central South University of Technology卷 / 27期
基金：
中国国家自然科学基金;
关键词：
Carbon-coated aluminum foil; Current collector; Electrochemical performance; Lithium sulfur battery;
D O I：
10.19476/j.ysxb.1004.0609.2017.04.008
中图分类号：
学科分类号：
摘要：
The carbon-coated aluminum (Al) foil was prepared by mixing two conductive carbon materials (carbon black+graphite) and studied as a current collector of Li-S battery. The effects of foil type on the electrode properties and cell performance were investigated. The results show that the carbon-coated Al foil possesses a point-surface combined conductive framework between active material layer and Al foil layer, which not only improves the conductivity of the sulfur electrode, but also enhances the adhesion of active material to current collector and inhibits the corrosion of the electrolyte to Al substrate. When using carbon-coated Al foil, the cell polarization is significantly reduced and stable charge-discharge platform is maintained. Compared to common Al foil, the carbon-coated Al foil favors more utilization of active material and more excellent cycle performance. The retained capacity reaches 602 F/g and capacity retention is 77.7% for the cell loading carbon-coated Al foil after 40 cycles at rate of 0.2C. © 2017, Science Press. All right reserved.
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页码：732 / 738
页数：6
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