Bipolar separator for electrochemical cells, a method for its preparation and an electrochemical cell comprising said separator.

摘要

An improved electrically conductive, composite bipolar separator for electrochemical cells comprising a molded aggregate of an electrically conductive aggregate of powdered electrically conductive material and a chemically resistant resin with a vertical array of electrically conductive valve metal ribs partially embedded in the molded aggregate at least on the anode side and having the entire surface exposed to the anolyte, except the area of electrical contact with the anode, coated with a layer of a chemically resistant and electrically non-conductive resin, the said ribs being arranged to form a grid to distribute the current to the porous anode bonded on the surface of a semi-permeable membrane or diaphragm at a uniformly distributed multiplicity of points over the entire anode surface and electrochemical cells containing the said bipolar separator and method of producing the said bipolar separator.