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 language | English |
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Pages (from-to) | B552-B556 |
Journal | Journal of the Electrochemical Society |
Volume | 157 |
Issue number | 4 |
DOIs | |
Publication status | Published - Mar 26 2010 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Renewable Energy, Sustainability and the Environment
- Surfaces, Coatings and Films
- Electrochemistry
- Materials Chemistry