After more than 150 years, silver plating is still performed using a cyanide electrolyte that resembles the electrode in the original 1840 patent. Most of the work directed at replacing cyanide in silver plating has resulted in little more than technical interest. As yet, no production-proven, noncyanide alternative has been found, although systems based on thiosulfate and succinimide appear to offer some promise. Both of these systems are commercially available.
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