Secondary calcium solid electrolyte high temperature battery
The authors report on recent work directed towards determining the viability of polycrystalline Ca/sup 2 +/ conducting ..beta..''-alumina solid electrolytes as the basis for a new type of high temperature battery. In this battery system the negative electrode consisted of a calcium-silicon alloy whose redox electro-chemistry was mediated to the calcium conducting solid electrolyte via the use of the molten salt eutectic CaCl/sub 2/ (51.4/sup M//0), CaI/sub 2/ (mp 550/sup 0/C). Both the molten salt and the calcium-alloy negative active material were separated from the positive active material via the Ca/sup 2 +/ conducting polycrystalline solid electrolyte. The positive electrode consisted of a solid-state matrix having a somewhat related crystallographic structure to Ca/sup 2 +/ ..beta..''-alumina, but where a significant fraction of the A1/sup 3 +/ sites located within this solid electrolyte's spinel block were replaced by immobile transition metal species. These species were available for participating in solid-state redox electrochemistry upon electrochemical cell cycling.
- Research Organization:
- Eltron Research Inc., Aurora, IL 60505
- OSTI ID:
- 5901675
- Journal Information:
- J. Electrochem. Soc.; (United States), Vol. 133:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ELECTRIC BATTERIES
SOLID ELECTROLYTES
ALUMINIUM OXIDES
CALCIUM ALLOYS
CALCIUM CHLORIDES
CALCIUM IODIDES
CRYSTAL STRUCTURE
ELECTROCHEMISTRY
ELECTRODES
HIGH TEMPERATURE
MOLTEN SALTS
POLYCRYSTALS
REDOX REACTIONS
SILICON ALLOYS
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
ALUMINIUM COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM HALIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
CRYSTALS
ELECTROCHEMICAL CELLS
ELECTROLYTES
HALIDES
HALOGEN COMPOUNDS
IODIDES
IODINE COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SALTS
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries