期刊
ELECTROCHIMICA ACTA
卷 53, 期 2, 页码 951-956出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2007.08.004
关键词
flower-like CuO films; solution-immersion; lithium ion batteries; morphology effect
Nanostructured CuO films with flower-like architectures were fabricated by immersing copper foils in an aqueous solution of sodium hydroxide and sodium dodecylsulfate, and subsequent heat treatment at low temperature. The as-prepared CuO films exhibited not only higher reversible capacity but also better rate capability than those of network-like counterpart as negative-electrodes of lithium ion batteries. The effect of surface morphology on the electrochemical performance of the CuO electrodes was discussed. It was confirmed that the unique flower-like structures are mainly responsible for the difference in electrochemical performance between the two kinds of electrodes. The result of this study provides an attractive electrode with high energy-density for lithium ion batteries via a simple and green procedure. (C) 2007 Elsevier Ltd. All rights reserved.
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