Electrolytic cell with improved bipolar electrode connection

摘要

In a bi-polar filter press electrodialysis cell the adjacent electrode pair is provided with attached bosses positioned to allow the pressure receiving area of each boss to mate with each other and surround the threaded bolt engaging means. An improved electrical contact is made between the mating surfaces of the anode and cathode bosses by coating the valve metal anode boss surface with platinum and the ferrous metal or a nickel cathode boss surface with a soft metal such as copper. A soft metal gasket is placed between the bolt head and the pressure receiving shoulder of the boss through which the bolt passes.