US 4,048,391 A · Alkali metal-sulphur cells

Abstract

An alkali metal sulphur cell has an outer tubular casing and an inner tubular solid electrolyte whose interior constitutes the cathode compartment of the cell. The outer tubular casing and the tubular solid electrolyte are spaced apart to define an annular space, at least the part of which adjacent the outer surface of the tubular solid electrolyte constitutes the anode compartment of the cell. Means are provided for causing the alkali metal to be distributed over the outer surface of the tubular solid electrolyte. Barrier means additional to the solid electrolyte are disposed between the sulphur material and at least a part of the outer casing. The barrier means may comprise a coating on one or both surfaces of the tubular solid electrolyte, alkali metal flow restrictor means or a coating on at least a part of the inner surface of the outer casing.

Claims12

Dependent claims

An alkali metal-sulphur cell comprising an outer tubular casing, an inner tubular solid electrolyte whose interior constitutes the cathode compartment of the cell containing sulphur material, said inner tubular solid electrolyte being spaced from said outer tubular casing to define an annular space therebetween, at least the part of said annular space adjacent to the outer surface of said inner tubular solid electrolyte constituting the anode compartment of the cell and containing alkali metal, an alkali metal reservoir from which alkali metal is supplied to said anode compartment, and means located between said outer tubular casing and said inner tubular solid electrolyte and surrounding the outer surface of said inner tubular solid electrolyte for limiting material upon mechanical failure of said solid electrolyte.

Dependencies are inferred from the claim text.

Alkali metal-sulphur cells

Life of this patent

Alkali metal-sulphur cells

Life of this patent

Abstract

Claims12