Electrochemical impedance of a platinum electrode in fused Na[sub 2]SO[sub 4] melts in SO[sub 2]-O[sub 2] environments
Journal Article
·
· Journal of the Electrochemical Society; (United States)
- Ohio State Univ., Columbus, OH (United States). Dept. of Materials Science and Engineering
The electrochemical impedance of a platinum electrode in fused Na[sub 2]SO[sub 4] melts with and without Na[sub 2]O[sub 2] additive in 0.1 and 1% SO[sub 2]-O[sub 2] environments has been studied from 1,170 to 1,200 K. The charge-transfer resistivity for the reaction involved with the cathodic reduction of the dominant oxidant solute S[sub 2]O[sub 7][sup 2[minus]] is about 0.75 [Omega]-cm[sup 2]. A Warburg impedance resulting from the diffusion of S[sub 2]O[sub 7][sup 2[minus]] in the Na[sub 2]SO[sub 4] melt is dependent on the melt chemistry through an equilibrium with the environment. The mobility of the oxidant and its concentration introduced opposing effects for the temperature dependence of the impedance.
- OSTI ID:
- 6005853
- Journal Information:
- Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 140:10; ISSN JESOAN; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHARGE TRANSPORT
CHEMICAL REACTIONS
CHEMISTRY
CORROSION
DATA
ELECTRIC CONDUCTIVITY
ELECTRIC IMPEDANCE
ELECTRICAL PROPERTIES
ELECTROCHEMISTRY
ELECTRODES
ELEMENTS
EXPERIMENTAL DATA
IMPEDANCE
INFORMATION
METALS
MOLTEN SALTS
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLATINUM
PLATINUM METALS
SALTS
SODIUM COMPOUNDS
SODIUM OXIDES
SODIUM SULFATES
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TRANSITION ELEMENTS
360105* -- Metals & Alloys-- Corrosion & Erosion
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHARGE TRANSPORT
CHEMICAL REACTIONS
CHEMISTRY
CORROSION
DATA
ELECTRIC CONDUCTIVITY
ELECTRIC IMPEDANCE
ELECTRICAL PROPERTIES
ELECTROCHEMISTRY
ELECTRODES
ELEMENTS
EXPERIMENTAL DATA
IMPEDANCE
INFORMATION
METALS
MOLTEN SALTS
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLATINUM
PLATINUM METALS
SALTS
SODIUM COMPOUNDS
SODIUM OXIDES
SODIUM SULFATES
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TRANSITION ELEMENTS