A major application of Copper(II) sulfate is as a source of copper for electroplating copper films. Electroplating copper from copper sulfate is used extensively in semiconductor packaging, for example in fabricating copper interconnects in silicon integrated circuits. It is used in the dual damascene technique, plating through-silicon vias, and constructing copper pillars. Copper sulfate is also used to prepare copper foil, by electrodepositing copper onto a rolling drum and simultaneously coiling the produced foil on a second roller.
Researchers have also used Copper(II) sulfate as a copper source to prepare copper nanoparticles
and copper sulfide nanoparticles
can also be used to synthesize copper complexes such as copper hexaiminotriphenylene metal organic frameworks
and protein-copper nanoflowers