Solubilities of LiFeO/sub 2/ and (Li, K)/sub 2/CrO/sub 4/ in molten alkali carbonates at 650/sup 0/C
Journal Article
·
· J. Electrochem. Soc.; (United States)
The equilibrium solubilities of LiFeO/sub 2/ and (Li,K)/sub 2/CrO/sub 4/ in 62% Li/sub 2/CO/sub 3-/38% K/sub 2/CO/sub 3/ were determined at 650/sup 0/C under controlled oxidizing conditions simulating those of molten carbonate fuel cells. Both materials appear to dissolve by a nonredox dissolution process, since the solubilities of LiFeO/sub 2/ and (Li,K)/sub 2/CrO/sub 4/ are independent of the partial pressures of CO/sub 2/ and O/sub 2/ over the ranges studied. Equilibrium solubilities of LiFeO/sub 2/ and (Li,K)/sub 2/CrO/sub 4/ in the carbonate mixture were determined to be 78 wppm of iron and 13.7 weight percent of chromium, respectively.
- Research Organization:
- Oak Ridge National Lab., Oak Ridge, TN 37831
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5576989
- Journal Information:
- J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 134:9; ISSN JESOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
30 DIRECT ENERGY CONVERSION
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
300505 -- Fuel Cells-- Electrochemistry
Mass Transfer & Thermodynamics
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
DIRECT ENERGY CONVERTERS
DISSOLUTION
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
FUEL CELLS
HIGH TEMPERATURE
HIGH-TEMPERATURE FUEL CELLS
IRON COMPOUNDS
IRON OXIDES
LITHIUM CARBONATES
LITHIUM COMPOUNDS
LITHIUM OXIDES
MOLTEN CARBONATE FUEL CELLS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
QUANTITY RATIO
SIMULATION
SOLUBILITY
TRANSITION ELEMENT COMPOUNDS
300503* -- Fuel Cells-- Materials
Components
& Auxiliaries
300505 -- Fuel Cells-- Electrochemistry
Mass Transfer & Thermodynamics
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
DIRECT ENERGY CONVERTERS
DISSOLUTION
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
FUEL CELLS
HIGH TEMPERATURE
HIGH-TEMPERATURE FUEL CELLS
IRON COMPOUNDS
IRON OXIDES
LITHIUM CARBONATES
LITHIUM COMPOUNDS
LITHIUM OXIDES
MOLTEN CARBONATE FUEL CELLS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
QUANTITY RATIO
SIMULATION
SOLUBILITY
TRANSITION ELEMENT COMPOUNDS