Titanium carbide coating of titanium by cathodic deposition from a carbonate melt

Valery Kaplan, Ellen Wachtel, Igor Lubomirsky

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The deposition of a TiC coating on a Ti electrode in molten Li 2CO3 at 900°C due to cathodic bias is described. During the first 5-20 min of application of -3V bias with respect to open circuit voltage, the formation of graphite is minimal and the resulting TiC layer is ~10 μm thick. Applying negative bias for longer time results in the formation of graphite dendrites. This behavior can be explained by the fact that the overpotential of CO is lower on TiC than on graphite. The resulting Ti\TiC structure can be employed to good advantage as the anode in the electrolysis of molten Li2CO3 for CO2 to CO conversion for energy storage. It has higher conductivity than the graphite electrode used previously and can be prepared in situ. The process described here can therefore make a valuable contribution to the practical implementation of the electrochemical production of CO. In addition, the fact that the TiC coating is perfectly conformal suggests that the same process can be used as a general method of coating Ti by TiC.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume159
Issue number11
DOIs
Publication statusPublished - 2012

Fingerprint

titanium carbides
Titanium carbide
Graphite
Carbonates
Carbon Monoxide
Titanium
carbonates
graphite
titanium
coatings
Coatings
Molten materials
Graphite electrodes
Open circuit voltage
Electrolysis
Energy storage
electrodes
Anodes
dendrites
electrolysis

ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Titanium carbide coating of titanium by cathodic deposition from a carbonate melt. / Kaplan, Valery; Wachtel, Ellen; Lubomirsky, Igor.

In: Journal of the Electrochemical Society, Vol. 159, No. 11, 2012.

Research output: Contribution to journalArticle

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