Journal
ELECTROCHIMICA ACTA
Volume 54, Issue 10, Pages 2851-2855Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2008.11.019
Keywords
ZnO nanorod arrays; Dandelion-like morphology; Hydrothermal synthesis; Negative electrodes; Lithium-ion batteries
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Funding
- National Science Foundation of China [50803013]
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In this study, ZnO nanorod arrays have been evaluated for the negative electrodes of lithium-ion batteries. The ZnO nanorod arrays with dandelion-like morphology were directly grown on copper substrates by a hydrothermal synthesis process at 80 degrees C. X-ray diffraction, scanning electron microscopy. galvanostaric discharge-charge, and cyclic voltammetry were employed to characterize the structure and electrochemical property of the arrays. The array electrodes showed a stable capacity over 310 mAh g(-1) after 40 cycles, and good capacity retention as the anodes of lithium-ion batteries. It was believed that the unique dandelion-like binary-structure played an important role in the electrochemical performance of the array electrodes. The present finding opens the possibility to fabricate micro/nanometer hierarchical ZnO films that might be applied in lithium-ion batteries. (C) 2008 Elsevier Ltd. All rights reserved.
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