GB1144447A - Electrochemical system with band electrodes - Google Patents

Abstract

1,144,447. Electric cells. VARTA A.G. 11 March, 1966 [17 March, 1965], No. 10795/66. Heading H1B. An electrode in the form of a band is fed continuously through a cell. As shown, a band 1 comprising a pair of electrodes spaced apart by a separator is normally wound up in a container 7 and is only fed through cell 2 containing electrolyte when it is desired to produce electricity. The band is passed through a further cell 3 where it is re-charged and then washed and dried in equipment 4, 5 before passing into container 8. The positive and negative electrodes may comprise separate endless bands which are discharged in a common cell but are re-charged, washed and dried separately (Fig. 2, not shown). The endless bands may be mobius strips. In a lead acid cell the electrode bands may be recharged separately in weak acid or alkaline electrolytes. Instead of recharging electrically the electrode bands may be chemically recharged. In one example a discharged PbO 2 band was recharged by passing through a heated alkaline persulphate solution. In another cell using CuO-Cd couples, the discharged Cd(OH) 2 electrode is heated to red heat in hydrogen to reduce it to Cd and the discharged Cu is heated in oxygen to form CuO.