Sodium--sulfur battery or cell with external storage. [Of electrolyte]
Patent
·
OSTI ID:7301789
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, and a cation-permeable barrier to mass liquid transfer interposed between and in contact with the anodic and cathodic reaction zones. The cathodic reaction zone(s) contains a cathodic reactant comprising a liquid electrolyte and an electrode in contact with the liquid electrolyte. The electrode is in electrical contact with both the cation-permeable barrier and an external circuit. The liquid electrolyte is electrochemically reversibly reactive with the anodic reactant and, when the battery or cell is at least partially discharged, is either a single-phase composition comprising molten polysulfide salts of the anodic reactant or a two-phase composition comprising molten sulfur and molten sulfur-saturated polysulfide salts of the anodic reactant. The improvement of the invention comprises including as a part of the secondary battery or cell one or more storage zones for the liquid electrolyte which are separate from the one or more cathodic reaction zones and means for flowing the liquid electrolyte from at least one of the storage zones, through the one or more cathodic reaction zones, and out of the cathodic reaction zones to at least one of the storage zones. More particularly, the improvement comprises the use of such storage zones and means for flowing in combination with several preferred types of battery or cell designs. 7 figures.
- Assignee:
- Ford Motor Co.
- Patent Number(s):
- US 4038465
- OSTI ID:
- 7301789
- Country of Publication:
- United States
- Language:
- English
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