Large-Area Cylindrical Diamond Electrodes

Thedepositionofwell-adherentdiamondfilmsontotheoutersurfaceofcylindricalsubstrateswasperformed.Severaldiametersizesanddifferentsubstratesmaterialswerestudied.Diamondfilmsadherencewasimprovedbyincreasingthesubstratesurfaceroughnessandbypyrolisingcastoroilorpolyanilinepolymeronsubstratesurfacetoacceleratetheformationofdiamondinitialnuclei.Profilometryand scanning electron microscopy were used respectively to measure roughness of surface and to characterize the morphologies ofthe diamond films. The residual stress in the diamond films was characterized by Raman spectroscopy with depth series analysis.Voltammetric analysis using c-BDD electrodes were performed in acid media, revealing high quality diamond behavior.© 2012 The Electrochemical Society. [DOI: 10.1149/2.001205jss] All rights reserved.Manuscript submitted June 12, 2012; revised manuscript received July 25, 2012. Published August 29, 2012.