Anode assembly, contact strips, electrochemical cell, and methods to use and manufacture thereof

Patent metadata

Field	Value
Publication number	US-2017342576-A1
Application number	US-201715605844-A
Country	US
Kind code	A1
Filing date	May 25, 2017
Priority date	May 26, 2016
Publication date	Nov 30, 2017
Grant date	—

Abstract

Provided herein are anode assembly, conductive contact strips, electrochemical cells containing the anode assembly and the conductive contact strips, and methods to use and manufacture the same, where the anode assembly includes a plurality of V-shaped, U-shaped, or Z-shaped elements positioned outside the anode shell and in electrical contact with the anode.

First claim

What is claimed is:

1 . An anode assembly, comprising:
an anode shell; an anode positioned inside the anode shell; and a plurality of V-shaped, U-shaped, or Z-shaped elements positioned outside the anode shell and in electrical contact with the anode.

2 . The anode assembly of claim 1 , wherein each of the V-shaped, the U-shaped, or the Z-shaped elements comprises an apex and a base.

3 . The anode assembly of claim 2 , wherein the U-shaped or the Z-shaped elements have a flat apex and the V-shaped, the U-shaped, or the Z-shaped elements have a flat base.

4 . The anode assembly of claim 2 , wherein the length between the apex and the base of the V-shaped, the U-shaped, or the Z-shaped element is between about 5-30 mm.

5 . The anode assembly of claim 2 , wherein the distance between the apexes of adjacent V-shaped, adjacent U-shaped, or adjacent Z-shaped elements is between about 5-200 mm.

6 . The anode assembly of claim 2 , wherein each of the bases of the V-shaped, the U-shaped, or the Z-shaped elements is metallurgically attached to the outside of the anode shell bringing it in electrical contact with the anode.

7 . The anode assembly of claim 2 , wherein the apexes of the V-shaped, the U-shaped, or the Z-shaped elements comprise conductive contact strips; are coated with nickel, copper, or iron; cladded with nickel, copper, or iron; sprayed with nickel, copper, or iron; bonded with nickel, copper, or iron; or combinations thereof.

8 . The anode assembly of claim 7 , wherein the conductive contact strips comprise explosion bonded Ni-Ti, explosion bonded Cu-Ti, laser cladded Cu-Ti, or laser cladded Ni-Ti.

9 . The anode assembly of claim 7 , wherein the conductive contact strips provide electrical continuity between the anode shell of an electrochemical cell with a cathode shell of an adjacent electrochemical cell when the electrochemical cells are stacked in an electrolyzer.

10 . The anode assembly of claim 1 , wherein the plurality of the V-shaped, the U-shaped, or the Z-shaped elements are individual elements or form a sheet.

11 . The anode assembly of claim 1 , wherein the plurality of the V-shaped, the U-shaped, or the Z-shaped elements provide substantially uniform current distribution to the anode.

12 . An electrochemical cell, comprising: the anode assembly of claim 1 ; a cathode shell, a cathode positioned inside the cathode shell, and one or more ion exchange membranes, wherein the one or more ion exchange membranes are disposed between the anode shell and the cathode shell.

13 . The electrochemical cell of claim 12 , wherein the cathode shell comprises vertical internal current bars and wherein each of bases of the V-shaped, the U-shaped, or the Z-shaped elements are in an alternate alignment with the vertical internal current bars in the cathode shell so that the current distribution is substantially uniform across the one or more ion exchange membranes.

14 . An electrolyzer comprising multiplicity of individual electrochemical cells of claim 12 .

15 . A method comprising:
contacting an anode shell and an anode positioned inside the anode shell with a cathode shell and a cathode positioned inside the cathode shell in an electrochemical cell; and contacting a plurality of V-shaped, U-shaped, or Z-shaped elements to the outside of the anode shell such that the anode shell is in electrical contact with the plurality of V-shaped, U-shaped, or Z-shaped elements.

16 . The method of claim 15 , wherein each of the V-shaped, the U-shaped, or the Z-shaped elements comprises an apex and a base.

17 . The method of claim 16 , further comprising metallurgically attaching each of the bases of the V-shaped, the U-shaped, or the Z-shaped elements to the outside of the anode shell thereby bringing it in electrical contact with the anode.

18 . The method of claim 16 , further comprising providing conductive contact strips on the apexes of the V-shaped, the U-shaped, or the Z-shaped elements; or coating, spraying, bonding, or cladding the apexes of the V-shaped, the U-shaped, or the Z-shaped elements with conductive metal.

19 . The method of claim 18 , further comprising laser cladding nickel or copper on titanium or explosion bonding nickel or copper to titanium to form the conductive contact strips.

20 . The method of claim 18 , further comprising providing electrical continuity through the conductive contact strips, between the anode shell of the electrochemical cell with a cathode shell of an adjacent electrochemical cell when the electrochemical cells are stacked in an electrolyzer.

21 . The method of claim 15 , further comprising manufacturing the plurality of V-shaped, U-shaped, or Z-shaped elements by explosion bonding or laser cladding nickel and titanium to form Ni-Ti sheets and configuring the Ni-Ti sheets to form the plurality of V-shaped, U-shaped, or Z-shaped elements.

22 . The method of claim 15 , further comprising providing vertical internal current bars inside the cathode shell and aligning each of the bases of the V-shaped, the U-shaped, or the Z-shaped elements in an alternate alignment with the vertical internal current bars and providing substantially uniform current distribution across the one or more ion exchange membranes.

23 . The method of claim 15 , comprising enabling air flow to provide convective cooling or heating outside the anode shell through the plurality of the V-shaped, the U-shaped, or the Z-shaped elements.

Assignees

• Calera Corp

Inventors

• Mcwaid Thomas H
• Gilliam Ryan J
• Zhao Hong
• Kostowskyj Michael

Classifications

• B23K26/34

  Laser welding for purposes other than joining · CPC title

• C25B1/46

  in diaphragm cells · CPC title

• B23K2103/12

  Copper or alloys thereof · CPC title

• B23K2103/14

  Titanium or alloys thereof · CPC title

• C25B13/04

  characterised by the material · CPC title