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Ruthenium oxide (formally RuO 2 ) was deposited on Ti by thermal decomposition of Ru chloride as well as Ru nitrate. Electrodes were prepared in a range of temperatures, 260–550°C, and characterized by SEM and cyclic voltammetry. The voltammetric charge q ∗ , obtained by integration of the CV curves, was recorded as a function of calcination temperature. q ∗ is higher for nitrate...