Secondary battery or cell with polysulfide wettable electrode No. 2
An improved secondary battery or cell has one or more anodic reaction zones containing a molten alkali metal reactant-anode in electrical contact with an external circuit; one or more cathodic reaction zones containing a cathodic reactant; a cation-permeable barrier to mass liquid transfer interposed between and in contact with the anodic and cathodic reaction zones; and an electrode which is disposed within the cathodic reaction zone. The cathodic reactant, when the battery or cell is at least partially discharged, is selected from the group consisting of a single-phase composition comprising molten polysulfide salts of the anodic reactant and a two-phase composition comprising molten sulfur and molten sulfur-saturated polysulfide salts of the anodic reactant. The electrode within the cathodic reaction zone is at least partially immersed in the cathodic reactant and in electrical contact with both the cation-permeable barrier and the external circuit. The improvement comprises employing an electrode, at least a portion of which consists essentially of a carbon-based porous conductive material which is coated with a material which renders the electrode portion more readily wettable by molten polysulfide than by molten sulfur, does not fill the entire volume of the cathodic reaction zone, and is, at least in part, adjacent to and contiguous with the cation-permeable barrier. 1 table.
- Assignee:
- Ford Motor Co.
- Patent Number(s):
- US 4084041
- OSTI ID:
- 6870677
- Resource Relation:
- Patent File Date: Filed date 22 Mar 1977
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SODIUM-SULFUR BATTERIES
CATHODES
CARBON
COATINGS
OXIDES
SULFIDES
SULFUR
CHALCOGENIDES
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELEMENTS
ENERGY STORAGE SYSTEMS
METAL-NONMETAL BATTERIES
NONMETALS
OXYGEN COMPOUNDS
SULFUR COMPOUNDS
250903* - Energy Storage- Batteries- Materials
Components
& Auxiliaries