Method for making an electrode

Details Method for making an electrode Method for making an electrode

1977-12-19

1979-12-04

Hoag, W. E.

Metal working

Method of mechanical manufacture

Electrical device making

264136, 264251, 264257, 264271, 264299, 264339, 429218, B29C 1500, B29C 2400, H01M 400

Patent

active

041764471

ABSTRACT:
In a sodium sulphur cell, a cathode electrode of annular form comprising a plurality of segments, each of trapezoidal form in cross-section is 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 mateial being cooled, e.g., by water or air, as it leaves the rolls.

REFERENCES:
patent: 1958131 (1934-05-01), Davidson
patent: 2054499 (1936-09-01), Florman
patent: 3635765 (1972-01-01), Greenberg
patent: 3993503 (1976-11-01), Ludwig
patent: 3994745 (1976-11-01), Ludwig

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