Surface modified stainless steel cathode for electrolyser
AssigneeChemetics Inc.
InventorsPaul Kozak, David Summers, Bin Lan
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Abstract
Sodium chlorate is produced industrially via electrolysis of brine and is thus an energy intensive process. An improved cathode for this and other industrial processes is a low nickel content stainless steel whose surface has been suitably modified. With an appropriate amount of surface roughening, the cathode provides for improved overvoltages during electrolysis while still maintaining corrosion resistance.
Claims21
A cathode for an industrial electrolyser comprising a stainless steel electrode comprising less than about 6% by weight nickel and characterized by a surface roughness Rq between about 1.0 and 5.0 micrometers.
A method of reducing the overvoltage of an industrial electrolyser cathode during electrolysis of brine while maintaining resistance of the cathode to corrosion, the method comprising roughening the surface of a stainless steel cathode comprising less than about 6% by weight nickel to a surface roughness Rq between about 1.0 and 5.0 micrometers.
Dependencies are inferred from the claim text.