Conversion of CO2 to CO by electrolysis of molten lithium carbonate

Valery Kaplan, Ellen Wachtel, Konstantin Gartsman, Yishay Feldman, Igor Lubomirsky

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

The conversion of CO2 to CO by electrolysis of molten Li 2 CO3 was investigated. Using a cell comprising a Ti cathode, a graphite anode and a source of CO2 allows the continuous electrolysis of the melt at 900°C with current densities at the electrodes higher than 100 mA/ cm2. The faradaic efficiency of the process is close to 100%, and the thermodynamic efficiency at 100 mA/ cm2 is >85%. The proposed method has several advantages: (i) No precious metal is required, (ii) no hazardous or toxic by-products are produced, and (iii) the method may operate continuously, producing pure CO rather than a mixture of CO and CO2. Therefore, the process described here has a potential application for converting electrical energy into fuel.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume157
Issue number4
DOIs
Publication statusPublished - 2010

Fingerprint

Lithium Carbonate
electrolysis
Carbon Monoxide
Electrolysis
Molten materials
Carbonates
carbonates
Lithium
lithium
thermodynamic efficiency
Precious metals
electric power
noble metals
Byproducts
Anodes
Graphite
Cathodes
anodes
Current density
graphite

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

Conversion of CO2 to CO by electrolysis of molten lithium carbonate. / Kaplan, Valery; Wachtel, Ellen; Gartsman, Konstantin; Feldman, Yishay; Lubomirsky, Igor.

In: Journal of the Electrochemical Society, Vol. 157, No. 4, 2010.

Research output: Contribution to journalArticle

Kaplan, Valery ; Wachtel, Ellen ; Gartsman, Konstantin ; Feldman, Yishay ; Lubomirsky, Igor. / Conversion of CO2 to CO by electrolysis of molten lithium carbonate. In: Journal of the Electrochemical Society. 2010 ; Vol. 157, No. 4.
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