Nanoporous structures prepared by an electrochemical deposition process

Free-standing metal foam structures with nano-dendritic walls of copper and tin are fabricated by an electrochemical. deposition process. This unique structure is attributed to the concurrent generation of hydrogen bubbles with extremely fast metal deposition at high cathodic current densities. The Figure shows a typical example of the foam-like structure of tin deposits with walls composed of nano-dendritic branches.