Phase relationships in positive electrodes of high temperature Li-Al/LiCl-KCl/FeS/sub 2/ cells
The phases present in FeS/sub 2/ electrodes operated in LiCl-KCl eutectic electrolyte were determined by x-ray diffraction and by metallographic examination. The phases were FeS/sub 2/, KFeS/sub 2/, Li/sub 3/Fe/sub 2/S/sub 4/, Li/sub 2.33/Fe/sub 0.67/S/sub 2/, Fe/sub 1-x/S, Li/sub 2/FeS/sub 2/, LiK/sub 6/Fe/sub 24/S/sub 26/Cl, Li/sub 2/S, and Fe. The metallographic and crystallographic characteristics of these phases are presented. The sequence of Li-Fe-S phases in the FeS/sub 2/ electrode was in accord with the sequence predicted from the equilibrium Li-Fe-S phase diagram. Two of the Li-Fe-S phases found at room temperature (Li/sub 2.33/Fe/sub 0.67/S/sub 2/ and Li/sub 2/FeS/sub 2/) result from decomposition on cooling of a solid solution phase: Li/sub 2+x/Fe/sub 1-x/S/sub 2/ (O/less than equivalent to/x/less than equivalent to/0.33). This work is pertinent to vehicle propulsion and off-peak energy storage. 18 refs.
- Research Organization:
- Argonne Natl Lab, Ill, USA
- OSTI ID:
- 6660442
- Journal Information:
- J. Electrochem. Soc.; (United States), Vol. 129:5
- Country of Publication:
- United States
- Language:
- English
Similar Records
High-performance batteries for off-peak energy storage and electric-vehicle propulsion. Progress report, July--December 1975. [Li--Al/LiCl--KCl/FeS or FeS/sub 2/]
High-performance batteries for off-peak energy storage and electric-vehicle propulsion. Progress report, April--June 1976. [Li--Al/LiCl--KCl/FeS or FeS/sub 2/, operate at 400 to 450 C; some work on Na/FeS/sub 2/ and CaMg/sub 2//CaCl/sub 2/--LiCl/sub 2/KCl/FeS cells]
Related Subjects
33 ADVANCED PROPULSION SYSTEMS
20 FOSSIL-FUELED POWER PLANTS
LITHIUM-SULFUR BATTERIES
ELECTRODES
ALUMINIUM
ELECTRIC-POWERED VEHICLES
EUTECTICS
HIGH TEMPERATURE
IRON SULFIDES
LITHIUM
LITHIUM CHLORIDES
METALLOGRAPHY
OFF-PEAK ENERGY STORAGE
PHASE STUDIES
POTASSIUM CHLORIDES
X-RAY DIFFRACTION
ALKALI METAL COMPOUNDS
ALKALI METALS
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
COHERENT SCATTERING
DIFFRACTION
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELEMENTS
ENERGY STORAGE
HALIDES
HALOGEN COMPOUNDS
IRON COMPOUNDS
LITHIUM COMPOUNDS
LITHIUM HALIDES
METAL-NONMETAL BATTERIES
METALS
POTASSIUM COMPOUNDS
SCATTERING
STORAGE
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VEHICLES
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries
330300 - Advanced Propulsion Systems- Electric-Powered Systems
200107 - Fossil-Fueled Power Plants- Off-Peak Energy Storage- (1980-)