Patent ID: 6495006
Filing Date: 2002-12-17
Classification: C25B

Abstract:
A bipolar ion exchange membrane electrolytic cell comprising an anode compartment frame which comprises an anode plate and an anode back plate arranged substantially parallel with each other with a space therebetween, conductive anode supporting members arranged with a prescribed spacing from one another between the anode plate and the anode back plate, and a cathode compartment frame which comprises a cathode plate and a cathode back plate arranged substantially parallel with each other with a space therebetween, and conductive cathode supporting members arranged with a prescribed spacing from one another between the cathode plate and the cathode back plate, so that the respective back plates are connected back to back to form a compartment frame unit, a plurality of such compartment frame units being arranged with a cation exchange membrane interposed, wherein(a) at least the cathode supporting members comprise electric current supply rib base portions fixed to the cathode back plate and extending up towards the cathode plate, and a flexible member supported by the adjacent electric current supply rib base portions and extending to reach the cathode plate, wherein the electric current supply rib base portions, flexible member, and cathode back plate define a closed space which does not contain the cathode plate, (b) the flexible member and the cathode plate are electrically connected to each other via a connecting portion of the flexible member, and (c) electric current supply from the cathode plate to the electric current supply rib base portions is carried out through the connecting portion, and the cathode plate is movably supported by the function of the flexible member.