Electrochemical Reduction of Oxygen in Carbonate and Carbonate-Halide Melts.
RENSSELAER POLYTECHNIC INST TROY N Y DEPT OF CHEMISTRY
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The electrochemical reduction of O2 in molten carbonates occurs through two reactions 1 12O2 CO2 2e CO3-2 and 2 12O2 2e O-2. The onset of these two processes has been investigated in molten Li2CO3, the ternary eutectic Li,Na,KCO3, and the two binary eutectics LiCl,Li2CO3 and LiF,Li2CO3. Reaction 1 was found to start at slightly negative potentials relative to the AuO2,CO2 reference electrode and depends on the supply of CO2 from the melt. The onset of reaction 2 occurs at more negative polarizations both are affected by the solubility of O2 in the melt. The results are examined relative to the differing viewpoints advanced relative to the electrochemical reduction of oxygen in such molten electrolytes. Author
- Physical Chemistry