E-pO^2- Diagrams of Metals in NaCl-KCl and Na₂CO₃-K₂CO₃ Eutectic Melts

Abstract

The potential (E) pO^2- diagrams for Fe, Ni, Cr, Zr, Co, Ti, Cu and Mo in NaCl-KCl eutectic melt and Fe, Ni, Co and Cu in Na₂CO₃-K₂CO₃ eutectic melt at 1023K have been made from thermodynamical data. The diagrams show that the materials of sintered Ni and NiO are well stable under the positive and negative electrodes condition of Molten Salt Fuel Cells. Further thermodynamic calculations offer the promising tool for selecting materials of fuel cell components.