Aqueous cadmium oxide paste with a high fluidity for filling by way of vibration electrode structures of the foam or fibrous type.

摘要

An aqueous cadmium oxide paste of high fluidity for the vibratory filling of electrode structures of the foam or fibrous type is described, which is characterised by a cadmium oxide content from 25 to 35 % by volume, a pH from 10 to 12.5, a content from 0.5 to 2.5% by weight, relative to cadmium oxide, of one or more dispersants from the group comprising the water-soluble salts of polyphosphoric acid, of di- and poly-phosphonic acids and derivatives thereof, of gluconic acid or of antimonyltartrate, and which has a plastic viscosity from 0.1 to 1 Pa.s and a flow limit between 10 and 120 Pa. Using this cadmium oxide paste, electrode structures of the foam and fibrous type can be completely filled in one working step.