Porous Boron-Doped Diamond/Carbon Nanotube Electrodes

Zanin, H.; May, P. W.; Fermin, D. J.; Plana, D.; Vieira, S. M. C.; Milne, W. I.; Corat, E. J.

Abstract

Nanostructuring boron-doped diamond (BDD) films increases their sensitivity and performance when used as electrodes in electrochemical environments. We have developed a method to produce such nanostructured, porous electrodes by depositing BDD thin film onto a densely packed “forest” of vertically aligned multiwalled carbon nanotubes (CNTs). The CNTs had previously been exposed to a suspension of nanodiamond in methanol causing them to clump together into “teepee” or “honeycomb” structures. These nanostructured CNT/BDD composite electrodes have been extensively characterized by scanning electron microscopy, Raman spectroscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. Not only do these electrodes possess the excellent, well-known characteristics associated with BDD (large potential window, chemical inertness, low background levels), but also they have electroactive areas and double-layer capacitance values ∼450 times greater than those for the equivalent flat BDD electrodes.

Citation

Zanin, H., May, P. W., Fermin, D. J., Plana, D., Vieira, S. M. C., Milne, W. I., & Corat, E. J. (2014). Porous Boron-Doped Diamond/Carbon Nanotube Electrodes. ACS applied materials & interfaces, 6(2), 990-995. https://doi.org/10.1021/am4044344

• Journal Article Type: Article
• Acceptance Date: Dec 20, 2013
• Online Publication Date: Jan 6, 2014
• Publication Date: Jan 22, 2014
• Deposit Date: Jun 16, 2023
• Journal: ACS Applied Materials & Interfaces
• Print ISSN: 1944-8244
• Electronic ISSN: 1944-8252
• Publisher: American Chemical Society
• Peer Reviewed: Peer Reviewed
• Volume: 6
• Issue: 2
• Pages: 990-995
• DOI: https://doi.org/10.1021/am4044344
• Keywords: General Materials Science; diamond; carbon nanotubes; porous electrodes; electrochemistry; high capacitance