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This manuscript represents an investigation of structure, property andelectrochemical activity for commercially available RuO2 coated titaniumelectrode, known as DSA. The investigation mainly aimed at XAS studies tounderstand the hidden structural information for RuO2. Two different (150micron) and a (6 micron) titanium metal coated with RuO2 was exposed at ex-situand in-situ XAS experiment to find out its electrocatalytic property andcorrosion during chlorine generation reaction. A detailed survey of XANES andEXAFS showed that the stable RuO2 formed a nano cluster during chlorinegeneration reaction and these clusters produced a distorted rutile structurewith an enhanced electrocatalytic activity. These nano clusters possibly thecause of generating surface heterogeneity of the present ruthenium dioxidematerial (active catalyst for DSA). With the help of electrochemical impedancespectroscopy we are able to detect the surface heterogeneity, this surfaceheterogeneity is having key role for outstanding electrochemical performance ofthese DSA electrodes.

Electrochemical and XAS analysis of the ruthenium-dioxide material, a catalyst for Dimensionally Stabilized Anodes