Amorphous carbon films were deposited on alumina plate by pyrolysing camphor at different temperatures with thermal chemical vapor deposition (CVD) technique. Carbon coated alumina plates were used as working electrode to ascertain their electrochemical behavior in different electrolytic media. Electrochemical windows of these carbon films were found to be suitable in the potential range of 1.05 to -0.30 V versus SCE in acid medium. In the presence of redox electrolyte, cathodic-anodic peak separation was found to be the same as that obtained with diamond. Raman spectra of carbon films were studied to explain some of their electrochemical behavior. © 2004 Elsevier Ltd. All rights reserved.