The redox equilibrium of UO22+/UO2 + couple was measured in Li2MoO4-Na 2MoO4 eutectic melt at 550 °C by cyclic voltammetry and absorption spectrophotometry. The standard redox potential of UO 22+/UO2+ couple was approximately evaluated by cyclic voltammetry. Further, the absorption spectrum and equilibrium potential were measured, repeatedly adding UO2 2+ source material into the melt containing UO2 +. From the correlation between the equilibrium potential of the melt and the concentration ratio [UO22+]/[UO2 +] spectrophotometrically evaluated, the standard redox potential of UO22+/UO2+ couple was determined to be -0.847 ± 0.010 V vs. O2/O2-.
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering
- Materials Science(all)