E90 Journal of The Electrochemical Society, 160 (9) E90-E93 (2013) 0013-4651/2013/160(9)/E90/4/$31.00 © The Electrochemical Society Thermodynamic and Kinetic Properties of Oxide Ions in a LiCl–KCl–CsCl Eutectic Melt

The solubility of lithium oxide (Li2O) and diffusion coefficient of oxide ions (O2−) has been determined to be 0.83 mol % and 2.1 × 10−6 cm2 s−1, respectively, at 773 K in a LiCl–KCl–CsCl eutectic melt. Cyclic voltammograms show that oxygen (O2) evolution on a boron-doped diamond (BDD) electrode is reversible and carbon dioxide (CO2) evolution on a glassy carbon electrode is irreversible. The standard formal potential of O2/O2 − estimated by electromotive force measurements using the BDD electrode i