ˈævɹɪdʒ kəpˈæsᵻɾiz ʌv ɹuːθˈiːniəm ɹˌoʊmən fˈoːɹ ˈɑːksaɪd hæv ɹˈiːtʃt sˈɪkshˈʌndɹɪd fˈɪfti ˈɛf slˈæʃ dʒˈiː wɛn ɪn ˈeɪtʃ tˈuː sˌoʊ fˈoːɹ səlˈuːʃən ænd ɐnˈiːld æt tˈɛmpɹɪtʃɚz lˈoʊɚ ðɐn tˈuːhˈʌndɹɪd dᵻɡɹˈiːz sˈiː.
Average capacities of ruthenium(IV) oxide have reached 650 F/g when in H2SO4 solution and annealed at temperatures lower than 200 °C.