期刊
DIAMOND AND RELATED MATERIALS
卷 62, 期 -, 页码 58-64出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2015.12.014
关键词
Electrophoretic deposition; Activated carbon; Carbon nanotubes; Supercapacitors
类别
资金
- Ministry of Science and Technology, Taiwan [MOST 103-2221-E-155-014-MY2]
This study examines the possibility of preparing activated carbon (AC) and carbon nanotubes (CNT) based electrodes for supercapacitors by a facile electrophoretic deposition (EPD) method. The EPD method is able to deposit AC and CNTs on a stainless steel substrate, fabricating a three dimensional porous structure. The weight proportions of CNT to AC in the as-prepared electrodes are estimated by thermogravimetric analysis. The amount of CNTs in the electrodes can be easily controlled by tuning the solution bath composition before the EPD process. The effects of the presence of CNTs in the AC electrode on supercapacitor performance are also examined in this work. The addition of CNTs not only increases the specific capacitance but also enhances the rate capability of the AC electrodes. After a cyclic stability test for 11,000 cycles, the as-prepared AC/CNT electrode shows capacitance retention of 85%, clearly demonstrating the commercial applicability of the electrodes fabricated by EPD process. (C) 2015 Elsevier B.V. All rights reserved.
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