Behavior of a Boron-Doped Diamond Electrode in Molten Chlorides Containing Oxide Ion

Abstract

Behavior of a boron-doped diamond electrode as an oxygen evolution electrode material was investigated at 773 K in molten LiCl-KCl (58.5:41.5 mol%), LiCl-KCl (75:25 mol%), LiCl-CaCl2 (64:36 mol%), LiCl-NaCl-CaCl2 (52.3:13.5:34.2 mol%) containing oxide ion. In molten LiCl-KCl systems, the BDD electrode is stable and its stability does not depend on the concentration of oxide ion and the melt composition. In molten LiCl-CaCl2 and LiCl-NaCl-CaCl2, the BDD electrode is less stable than in molten LiCl-KCl systems. © Springer 2010.