Elektrode für galvanische Elemente, insbesondere für Akkumulatoren, und Verfahren zur Herstellung einer solchen Elektrode.

摘要

681,999. Accumulators. INTERNATIONAL CO. FOR INDUSTRIAL EXPLOITATION SOC. ANON. Sept. 14, 1949 [Sept. 14, 1948], No. 23766/49. Class 53. An accumulator plate comprises a mass of loosely-connected glass or other fibres which are coated with metal to render them conductive. A frame and cross-bars may be formed by compressing the plate between dies. In a modification the fibrous mass is mounted in a separate frame made from a synthetic material. The metal with which the fibres are coated may be cadmium, tin, antimony or alloys of these metals and the metals may be deposited electrolytically or from the vapour of the metal and the completed electrode may be provided with a protective coating of silica gel or other colloid. Fig. 1 shows an apparatus for forming frames and ribs on a band 2 of metal coated fibres drawn from a reel 1. The band is passed between heated dies having ribs 8 which form the frame and cross-bars of each electrode when the dies are brought together. The dies are heated by devices 10 and an inert gas is introduced through openings 12, 13 and passes out through openings 14. Each side of the band 2 is provided with a protective fabric band drawn from reels 7. These bands prevent the band 2 from sticking to the ribs 8 of the pressing tools. Fig. 2 shows a part of the band 2 with the protective bands 6a, 6b before being passed through the pressing apparatus. The part of Fig. 2 to the right of the line AA shows the band after the edges 16 and cross-pieces 9 have been compressed to a greater density to form the frame. Specification 677,016 is referred to.