Porous Boron-Doped Diamond/Carbon Nanotube Electrodes

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 a...

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Bibliographic Details
Published in:ACS applied materials & interfaces 2014-01, Vol.6 (2), p.990-995
Main Authors: Zanin, H, May, P. W, Fermin, D. J, Plana, D, Vieira, S. M. C, Milne, W. I, Corat, E. J
Format: Article
Language:English
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Summary: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.
ISSN:1944-8244
1944-8252
DOI:10.1021/am4044344