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

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

中国物理B ›› 2011, Vol. 20 ›› Issue (2): 28101-028101.doi: 10.1088/1674-1056/20/2/028101

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

周维亚¹, 牛志强², 马文君², 董海博², 李金柱²

(1)Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; (2)Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2010-12-01 修回日期:2010-12-01 出版日期:2011-02-15 发布日期:2011-02-15
基金资助:
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).

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

Niu Zhi-Qiang(牛志强)^a)b),Ma Wen-Jun(马文君)^a)b),Dong Hai-Bo(董海博)^a)b), Li Jin-Zhu(李金柱)^a)b),and Zhou Wei-Ya(周维亚)^a)^†

^a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; ^b Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

Received:2010-12-01 Revised:2010-12-01 Online:2011-02-15 Published:2011-02-15
Supported by:
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).

摘要/Abstract

摘要： 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.

关键词: single-walled carbon nanotube, electrode, electrochemical properties, electrocatalytic activities

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.

Key words: single-walled carbon nanotube, electrode, electrochemical properties, electrocatalytic activities

中图分类号: (Nanotubes)

81.07.De

82.45.Fk (Electrodes) 82.45.Jn (Surface structure, reactivity and catalysis) 82.45.Yz (Nanostructured materials in electrochemistry)

牛志强, 马文君, 董海博, 李金柱, 周维亚. Fabrication and electrochemical properties of free-standing single-walled carbon nanotube film electrodes[J]. 中国物理B, 2011, 20(2): 28101-028101.

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[J]. Chin. Phys. B, 2011, 20(2): 28101-028101.

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

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

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