期刊
JOURNAL OF POWER SOURCES
卷 186, 期 1, 页码 201-205出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2008.09.095
关键词
Tin; Copper-tin intermetallic compound; Phase control; Intercalation; Copper substrate; Lithium-ion battery
资金
- Growth Engine Technology Development Program [10016472]
- Korea Ministry of Knowledge Economy
- Kongju National University Research Program
The influence of substrate morphology and ageing on the charge-discharge performance of a Sn-Ni alloy anode electrodeposited Oil a Cu Substrate are examined. The Sn-Ni alloy (Sn 82 at.%-Ni 18 at.% anode) shows a high capacity of around 480 mAh g(-1) up to 12 cycles, but its capacity rapidly fades with cycling. The initial capacity and the cyclic properties of the alloy electrode are significantly improved when the surface morphology of the Cu Substrate is changed from smooth-type to nodule-type. Optimized ageing treatment leads to further enhancement in the charge-discharge performance of the anode. The increase in the capacity and better cyclic properties are attributed to stronger adhesion between the Si-Ni anode and the Cu Substrate. This is induced by inter-locking of the nodule-type Cu substrate and a buffering effect of Cu-Sn intermetallic Compounds formed during ageing. (c) 2008 Elsevier B.V. All rights reserved.
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