Fabrication and electric capacitive behavior of hetero-junction carbon nanoclusters by using secondary chemical vapor deposition

被引:16
作者
Hsieh, Chien-Te [1 ]
Lin, Jia-Yi [1 ]
Chou, Yun-Wen [1 ]
机构
[1] Yuan Ze Univ, Yuan Ze Fuel Cell Ctr, Dept Chem Engn & Mat Sci, Tao Yuan 320, Taiwan
关键词
D O I
10.1016/j.cplett.2007.07.001
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A chemical vapor deposition employed for growing secondary carbon nanotubes (CNTs) decorated with primary multi-walled CNTs was investigated. N-2 physisorption indicated that the introduction of secondary nanotubes improves both of specific surface area and pore size distribution. The electrochemical behavior of the carbon electrodes in H2SO4 was examined using ac electrochemical impedance spectroscopy. Equivalent circuit analysis indicated that the presence of secondary nanotubes not only reduces the equivalent series resistance but also improves the specific double-layer capacitance. There is ca. 204% capacitance increase achieved through the introduction of secondary nanotubes. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:149 / 154
页数:6
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