Journal
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume 167, Issue 11, Pages -Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1945-7111/aba15a
Keywords
Redox potential; Chronopotentiometry (CP); Liquid Mg reference electrode; Magnak chloride
Funding
- U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy (EERE) under Solar Energy Technologies Office (SETO) [DE-EE0008380]
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The redox potential of Ni(II)/Ni, Cr(II)/Cr, and Mg(II)/Mg in MgCl2-KCl-NaCl (Magnak chloride) were studied utilizing chronopotentiometry (CP) method in a three-electrode electrochemical cell. Four different CrCl(2)concentrations from 873 K to 1073 K, three NiCl(2)concentrations from 773 K to 1073 K, and two MgCl(2)concentrations from 823 K to 1073 K have been measured. The activity coefficients were calculated referring to a supercooled potential accordingly. The empirical equation of formal potential will be of great significance for the fundamental thermodynamic prediction in high-temperature Magnak chloride systems where corrosion product impurities are present.
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