Transparent metal mesh electrode design for reversible metal electrodeposition

Abstract

Design of transparent mesh counter electrodes for use in dynamic window articles capable of reversible metal electrodeposition (RME). Such an RME window may include a transparent conductive electrode, an electrolyte in contact with the electrode, where the electrolyte includes metal cations that can be reversibly electrodeposited onto the electrode, and a mesh counter electrode. The mesh counter electrode includes an electrochemically inert core with a thin metal coating thereover. The thin metal coating can be of the material that is involved in electrodeposition (e.g., a combination of copper and bismuth). The mesh counter electrode is substantially transparent (e.g., transparency of at least about 70%). Such a mesh counter electrode can provide a high capacity (1.5 C/cm2) that provides good durability over numerous tinting and bleaching cycles, with minimal change in coloration efficiency, reflection profile, and electrodeposition metal concentration (e.g., [Cu2+]) in the electrolyte.

Dependencies are inferred from the claim text.