Platinum Hydrogen Activity Electroplating on Gold. Click image for more info.

Schematic shows self-quenched platinum deposition on a gold surface. Under a high driving voltage, platinum in solution (bound to four chloride atoms) can shed the chloride and bind to a location on the gold. Hydrogen rapidly adsorbs on the platinum, ensuring that the platinum forms an even surface a single atom thick.

Image Credit: Gokcen/NIST

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