Patent ID: 9099297
Filing Date: 2015-08-04
Classification: C25D,H01L

Abstract:
1. An electro-chemical processor, comprising: a vessel; an anode assembly in the vessel, with the anode assembly including an inner anode in an inner anode chamber in the vessel, and an outer anode in an outer anode chamber in the vessel, with the outer anode chamber surrounding the inner anode chamber; and a catholyte assembly attached to the anolyte assembly, with an inner catholyte chamber within the catholyte assembly aligned over the inner anode chamber; an outer catholyte chamber within the catholyte assembly aligned over the outer anode chamber and separated from the outer anode chamber by an outer membrane; an annular dielectric material in the vessel surrounding the inner catholyte chamber and having a curved upper surface with a plurality of annular ring slots extending from the curved upper surface to the outer catholyte chamber, wherein the slots are formed as discrete discontinuous segments, with segments having different radial positions, to reduce radial current density variations; and a thief electrode adjacent to an upper end of the vessel.