Bipolar separator for electrochemical cells and method of preparation thereof

摘要

An improved bipolar separator for electrochemical cells comprising a molded aggregate of an electrically conductive powdered material and a powdered thermosetting resin in a weight ratio of 1:1 to 9:1 and having a resistivity coefficient, in the direction perpendicular to the major surfaces of the separator, of less than 0.3 OMEGA cm 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 thermosetting resin and electrochemical cells containing the said bipolar separator and method of producing the said bipolar separator.