Metal laminate strip construction of bipolar electrode backplates
AssigneeDiamond Shamrock Corporation
InventorLewis M. Meyer
Life of this patent
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Abstract
Disclosed is a method for electrically and mechanically connecting the backplates of a bipolar electrode to be used in a filter press electrolytic cell for electrochemical production. This method employs the use of a metal laminate strip having surfaces of metallic substances identical and corresponding to the metallic makeup of the given backplates which can be welded between the anode and cathode backplates using standard weldment procedures. The metal laminate strips are placed in a spaced series such that the anode and cathode backplates present two parallel planes in spaced relation to each other thereby leaving a space for the escape of hydrogen gas, preventing hydrogen embrittlement of the titanium anode backplate.
Claims7
A method for mechanically and electrically connecting the anode and cathode backplates of a bipolar electrode for use in an electrolytic cell comprising the steps of:
- placing a spaced series of metal laminate strips having surfaces of identical and corresponding metallic makeup to the metallic makeup of the corresponding backplates upon one of said backplates;
- placing the other backplate in direct alignment on top of the spaced series of metal laminate strips such that the cathode backplate and anode backplate present two parallel planes in a spaced relation with respect to each other;
- and effecting a weldment between the spaced series of metal laminate strips and each of the backplates so that less than 50% of the total surface area of the anode and cathode backplates is in direct bonded contact to provide electrical current transmission therethrough while the remaining area is an air space to allow the venting of hydrogen to prevent the hydrogen embrittlement of the anode backplate.
A method for the assembly of components for a bipolar electrode for use in an electrolytic cell comprising the steps of:
- placing a spaced series of metal laminate strips having surfaces of identical and corresponding metallic makeup to the metallic makeup of the corresponding backplates upon a first backplate and affecting a weldment therebetween;
- placing a second backplate of differing metallic nature against the other surface of the spaced series of metal laminate strips which is identical and corresponding in metallic nature to the second backplate and affecting a weldment therebetween;
- placing a first electrode material with a series of channels formed therein against the first backplate such that the channels are in direct alignment with the spaced series of metal laminate strips and affecting a weldment therebetween;
- and placing a second electrode material with a series of channels formed therein against the second backplate such that the channels are in direct alignment with the spaced series of metal laminate strips and affecting a weldment therebetween.
Dependencies are inferred from the claim text.