Electrochemical Oxidation of Metal Carbides in Aqueous Solutions. Issue 4 (12th January 2018)

• Record Type: Journal Article
• Authors: Messner, Matthew; Walczyk, Dustin J.; Palazzo, Benjamin. G.; Norris, Zachary A.; Taylor, Gregory; Carroll, John; Pham, Tung X.; Hettinger, Jeffrey D.; Yu, Lei
• Is Part Of: Journal of the Electrochemical Society. Volume 165:Issue 4(2018)
• Page Start: H3107
• Page End: H3114
• Publication Date: 2018-01-12
• Subjects: Carbide-derived Carbon -- Electrochemical Oxidation -- Metal Carbides; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.0171804jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Transition metal carbides have unique properties such as high hardness, high melting temperatures, high thermal conductivity, and high chemical stability. In this report, we investigate the electrochemical oxidation of a series of metal carbides including NbC, Nb2 C, TaC, Ta2 C, VC, VCrC, TiC and TiCrC in neutral, basic, or acidic aqueous solutions. Cyclic voltammetry and elemental analysis demonstrated that many of these metal carbides can be electrochemically oxidized at low electrode potentials to produce soluble metal ions in the solutions. Carbon in the metal carbides remains on the electrode substrates and forms porous carbide-derived carbon (CDC). The surface morphology of the CDC and specific surface area depend on the metal carbide precursors and the electrochemical oxidation conditions.