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Electrochemical durability investigation of single-walled and multi-walled carbon nanotubes under potentiostatic conditions

✍ Scribed by Jiajun Wang; Geping Yin; Yuyan Shao; Zhenbo Wang; Yunzhi Gao

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
360 KB
Volume
176
Category
Article
ISSN
0378-7753

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✦ Synopsis

The electrochemical corrosion behaviors of single-walled carbon nanotubes (SWNTs) and multi-walled carbon nanotubes (MWNTs) were investigated with potentiostatic oxidation at 1.2 V for 120 h. The surface oxygen contents of the two types of carbon nanotubes were analyzed by cyclic voltammograms (CV) and X-ray photoelectron spectroscopy (XPS). The increase in oxygen content on the SWNTs surface is higher than that on the MWNTs after 120 h oxidation. The results indicate that MWNTs exhibit higher electrochemical stability than SWNT, thus a good electrode material for PEMFC.

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