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EMF measurements on the Li-Al/Ni/sub 3/S/sub 2/ couple in molten salt electrolytes

Journal Article · · J. Electrochem. Soc.; (United States)
DOI:https://doi.org/10.1149/1.2119886· OSTI ID:5143897
; ;

The (emf) vs. temperature curve for the Li-Al/Ni/sub 3/S/sub 2/ couple was determined in 58.2 mol percen (m/o) LiCl-41.8 m/o KCl (eutectic electrolyte), 49.1 m/o LiCl-50.9 m/o KCl (KCl-rich electrolyte), 69.6 m/o LiCl-30.4 m/o KCl (LiCl-rich electrolyte), and in 22 m/o Lif-31 m/o LiCl-47 m/o LiBr electrolyte. The results indicate that with these electrolytes the emf value of the couple at a given temperature is independent of the electrolyte composition. Equilibrium emf values were obtained instantaneously upon heating or cooling at rates of about0.2/sup 0/C/min, while at higher rates ( about0.5/sup 0/C/ min) equilibrium values were obtained after about 1 1/2 hr at a given temperature. X-ray diffraction analyses of the positive electrodes from the cells tested indicate that the only nickel-sulfur phase formed in the electrode reaction is Ni/sub 3/S/sub 2/. Thermochemical analyses also suggest Ni/sub 3/S/sub 2/ as the active nickel sulfide phase.

Research Organization:
Argonne National Laboratory, Chemical Technology Division, Argonne, Illinois
OSTI ID:
5143897
Journal Information:
J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 130:5; ISSN JESOA
Country of Publication:
United States
Language:
English

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Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ALKALI METAL COMPOUNDS
ALKALI METALS
ALUMINIUM
BROMIDES
BROMINE COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHLORIDES
CHLORINE COMPOUNDS
COHERENT SCATTERING
DIFFRACTION
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYTES
ELECTROMOTIVE FORCE
ELEMENTS
FLUIDS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
KINETICS
LIQUID METALS
LIQUIDS
LITHIUM
LITHIUM BROMIDES
LITHIUM CHLORIDES
LITHIUM COMPOUNDS
LITHIUM FLUORIDES
LITHIUM HALIDES
METAL-NONMETAL BATTERIES
METALS
MOLTEN SALTS
NICKEL COMPOUNDS
NICKEL SULFIDES
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
REACTION KINETICS
SALTS
SCATTERING
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE EFFECTS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION