Electrochromic IrOx Thin Films Formed in Sulfatoiridate (III, IV) Complex Solution by Periodic Reverse Current Electrolysis (PRIROF)

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Abstract
Electrochromic thin films of iridium oxide have been obtained by alternative anodic and cathodic polarization of the electroconducting glass (NESA) in a sulfatoiridate complex solution. On both electrodes a transparent, dark-blue deposition was observed. According to the current waveform, it is suggested that the repeated anodic and cathodic polarization acts as coloring and bleaching processes of the electrochemically growing deposit, the electrochromic oxide film gradually thickening on the NESA. The deposits are very adhesive to the substrate NESA. This method offers a simple and economical process for manufacturing iridium oxide films on NESA glasses compared with the already reported method.