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Sulfate and Chloride Electrolytes for Nickel Electrowinning Electrowinning of nickel is usually carried out from three types of electrolytes: typically sulfate, chloride, and sulfate-chloride mixtures, with the operating parameters and the cell configuration closely related to the nature of the electrolyte used. Typically, for sulfate electrolytes, electrowinning is conducted in a range of pH 2 to 4, as lower pH values give excessive hydrogen evolution at the cathode surface, while higher pH values lead generally to the for

Nickel Electrowinning and Impurities Influence Electrowinning from aqueous solutions using insoluble anodes is a well-established process for metals like zinc, copper, nickel, cobalt, cadmium, manganese and others. The metal is electrodeposited at the cathode from a solution of one of its salts, most commonly a sulfate. Water is decomposed at the anode, which is usually made of lead or a lead alloy; oxygen is evolved and acid (hydrogen ions) is formed. Successful electrowinning and electrorefining processes for the production of

What Kind of Lead Anode is Good for Zinc Electrowinning? In electrowinning applications, lead and its alloys have been the preferred anode material for a long time. The anode material used in the electrowinning process should meet three requirements: electrical conductivity, electrocatalysis, stability, and certain resistance. Good electrical conductivity is essential for energy efficiency. Good electrocatalytic properties are essential to improve product yield. Long-term stability is also an important property because electrode we

How Dimensionally Stable Anodes (DSA) are Used for Hydrogen Production? Hydrogen production via electrochemical technology is one of the most sustainable methods, choosing an appropriate counter electrode is critical. Modified electrodes of dimensionally stable anodes (DSA) have emerged as an alternative, with a high chemical and electrochemical stability. The chosen coating must allow the transport of an electric charge between the base metal and the electrode/electrolyte interface, as well as being able to catalyse the electro