Electrode structures

Details Electrode structures Electrode structures

1979-08-27

1981-01-06

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Plural concentric or single coiled electrode

429104, H01M 400

Patent

active

042437334

ABSTRACT:
In a sodium sulphur cell, a cathode electrode of annular form comprising a plurality of segments, each of trapezoidal form in cross-section and joined by webs along a longer edge of each segment so that the assembly is foldable to form a substantially annular structure. This electrode may be made by compressing a blanket or sheet of carbon or graphite felt or fibres in a heated mould, which is shaped to produce the segments joined by thin webs, the material being impregnated with sulphur or sodium polysulphide before or after insertion in the mould, and the material being cooled before removal from the mould. Alternatively, the segments may be formed from the blanket or sheet by using shaped rolls, the material being cooled, e.g. by water or air, as it leaves the rolls.

REFERENCES:
patent: 2793427 (1957-05-01), Marvin
patent: 3314821 (1967-04-01), Lambert et al.
patent: 3749603 (1973-07-01), Stringham et al.
patent: 3982957 (1976-09-01), Jones et al.
patent: 3993503 (1976-11-01), Ludwig
patent: 4118545 (1978-10-01), Jones
patent: 4123596 (1978-10-01), Robinson

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