Fabrication and electrochemical properties of free-standing single-walled carbon nanotube film electrodes

doi:10.1088/1674-1056/20/2/028101

Abstract An easily manipulative approach was presented to fabricate electrodes using free-standing single-walled carbon nanotube (SWCNT) films grown directly by chemical vapor deposition. Electrochemical properties of the electrodes were investigated. In comparison with the post-deposited SWCNT papers, the directly grown SWCNT film electrodes manifested enhanced electrochemical properties and sensitivity of sensors as well as excellent electrocatalytic activities. A transition from macroelectrode to nanoelectrode behaviours was observed with the increase of scan rate. The heat treatment of the SWCNT film electrodes increased the current signals of electrochemical analyser and background current, because the heat-treatment of the SWCNTs in air could create more oxide defects on the walls of the SWCNTs and make the surfaces of SWCNTs more hydrophilic. The excellent electrochemical properties of the directly grown and heat-treated free-standing SWCNT film electrodes show the potentials in biological and electrocatalytic applications.

Keywords: single-walled carbon nanotube electrode electrochemical properties electrocatalytic activities

Received: 01 December 2010
Revised: 01 December 2010
Accepted manuscript online:

PACS:	81.07.De	(Nanotubes)
	82.45.Fk	(Electrodes)
	82.45.Jn	(Surface structure, reactivity and catalysis)
	82.45.Yz	(Nanostructured materials in electrochemistry)

Fund: Project supported by the National Natural Science Foundation of China, the National Basic Research Program of China (Grant No. 2005CB623602), the Fund of the Beijing Municipal Education Commission (Grant No. YB20108000101) and the Key Item of Knowledge Innovation Project of the Chinese Academy of Sciences (Grant No. KJCX2-YW-M01).

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Niu Zhi-Qiang(牛志强), Ma Wen-Jun(马文君), Dong Hai-Bo(董海博), Li Jin-Zhu(李金柱), and Zhou Wei-Ya(周维亚) Fabrication and electrochemical properties of free-standing single-walled carbon nanotube film electrodes 2011 Chin. Phys. B 20 028101

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Fabrication and electrochemical properties of free-standing single-walled carbon nanotube film electrodes

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