Patent
Method of in situ plating of an active coating on cathodes of alkali halide electrolysis cells
TLDR
In this paper, an active metal coating which lowers the hydrogen discharge overpotential at the cathode in the electrolysis of aqueous alkali metal halide solutions is deposited on the cathodes tubes of a cathode can of an electrolysis cell without the removal of the tubes from the can.Abstract:
An active metal coating which lowers the hydrogen discharge overpotential at the cathode in the electrolysis of aqueous alkali metal halide solutions is deposited on the cathode tubes of a cathode can of an electrolysis cell without the removal of the tubes from the can. Plating solution and anodes of plating metal are placed inside a cathode can and the components are electrically connected so as to deposit an active coating onto the cathode tubes. The plating metal is preferably an alloy of nickel and zinc and the process involves the final step of leaching the zinc component of the alloy deposit from the plated cathode tubes to provide a porous, active nickel surface which results in a reduction of the hydrogen discharge overpotential for the electrolysis of alkali metal halides, particularly sodium chloride.read more
Citations
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Journal ArticleDOI
Electrocatalysis of hydrogen evolution in the light of the brewer—engel theory for bonding in metals and intermetallic phases
TL;DR: A comprehensive survey of achievements in electrocatalysis for the hydrogen evolution reaction (h.e.r.) has been reviewed with the main emphasis on the composite d-metal catalysts.
Journal ArticleDOI
Low overvoltage electrocatalysts for hydrogen evolving electrodes
TL;DR: In this article, an electrocatalyst for hydrogen evolving cathodes has been developed for use in alkaline media, which exhibits a low overvoltage for hydrogen evolution (70-90 mV at 70°C and 1A cm −2 in 5 N KOH).
Patent
Zinc-nickel alloy electroplating process
TL;DR: An acid electroplating process for codepositing zinc and nickel to provide bright lustrous ductile zinc-nickel alloy electrodeposits containing no more than a few percent by weight of nickel which deposits have good receptivity to chromate conversion coatings and which have drastically improved corrosion resistance as discussed by the authors.
Patent
In situ reduction of electrode overvoltage
TL;DR: In this article, a method and apparatus for in situ reduction of cathode overvoltage in electrolytic cells is presented, which involves introducing low overvoltages or noble metal ions into the catholyte solution and plating those ions on the cathode in situ.
Patent
Selective electroplating apparatus and method of using same
TL;DR: In this paper, an electroplating apparatus for rapidly depositing a metal onto a selected surface of a workpiece is described, which consists of an anode having an active surface with a selected shape to combine with the selected surfaces of the workpiece to define an elongated gap of at least about 0.050 inches.
References
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Patent
Electrochemical processing of inner surfaces of large vessels
TL;DR: A portable electrode assembly is disclosed for passage through restricted openings and convenient set-up within relatively large vessels for the purpose of electrochemically processing or treating the inner surface of the vessel without removing the vessel from its associated permanent support structure as mentioned in this paper.
Patent
Means for electroplating tubes internally and externally
Victor L Soderberg,Gleason C Roy +1 more
Patent
Method for metal coating a tubing string in situ in a well
TL;DR: In this paper, a reflective metallic material was used to brighten the tubing string of a steam injection tube to reduce the radiant heat loss from the tube to the casing during steam injection operations.