Patent ID: 9534308
Date: 2017-01-03
CPC Classifications: C25D

Claim:
1. An apparatus for simultaneously electroplating a first metal and a second, more noble metal onto a substrate, comprising: (a) an anode chamber for containing anolyte and an active anode, said active anode comprising the first metal; (b) a cathode chamber for containing catholyte and the substrate; (c) a separation structure positioned between the anode chamber and the cathode chamber and permitting passage of ionic current during electroplating; and (d) a getter comprising a solid phase getter material that undergoes a metal-metal displacement reaction or a selective ion exchange process when contacting ions of the second metal, wherein the getter is positioned to contact the anolyte but not contact the catholyte during electroplating, wherein the getter is positioned at a first distance from the cathode chamber and the active anode is positioned at a second distance from the cathode chamber such that the first distance is greater than the second distance, and wherein the getter is structurally distinct from the active anode.