Method of manufacturing current collectors for electrochemical cells by electroplating wire with indium and drawing

摘要

Current collectors having particular utility in alkaline electrochemical cells, particularly zinc/manganese dioxide alkaline cells containing "zero-added" mercury are manufactured by a process involving electroplating conductive wire with indium and then drawing the plated wire to a lesser diameter. The drawn plated wire may then be cold-framed and cut to the desired lengths, typically in the shape of a nail. The drawing increases uniformity of the plating and hence smoothness and lustre, and also increases plating adhesion. Reduction in cell gassing and load voltage instability during cell discharge is thereby achieved.