10.1021/ic100176d.s001 Katsutoshi Fukuda Katsutoshi Fukuda Takahiro Saida Takahiro Saida Jun Sato Jun Sato Mihoko Yonezawa Mihoko Yonezawa Yoshio Takasu Yoshio Takasu Wataru Sugimoto Wataru Sugimoto Synthesis of Nanosheet Crystallites of Ruthenate with an α-NaFeO<sub>2</sub>-Related Structure and Its Electrochemical Supercapacitor Property American Chemical Society 2010 crystal structure Nanosheet Crystallites acidic electrolyte conductive ruthenium oxide Electrochemical Supercapacitor PropertyUnilamellar crystallites restacked RuO 2 nanosheets parent material NaFeO RuO 2 nanosheets 1 nm H 0.2RuO protonated ruthenate 2010-05-17 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/Synthesis_of_Nanosheet_Crystallites_of_Ruthenate_with_an_NaFeO_sub_2_sub_Related_Structure_and_Its_Electrochemical_Supercapacitor_Property/2769046 Unilamellar crystallites of conductive ruthenium oxide having a thickness of about 1 nm were obtained via elemental exfoliation of a protonic layered ruthenate, H<sub>0.2</sub>RuO<sub>2</sub>·0.5H<sub>2</sub>O, with an α-NaFeO<sub>2</sub>-related crystal structure. The obtained RuO<sub>2</sub> nanosheets possessed a well-defined crystalline structure with a hexagonal symmetry, reflecting the crystal structure of the parent material. The restacked RuO<sub>2</sub> nanosheets exhibited a high pseudocapacitance of ∼700 F g<sup>−1</sup> in an acidic electrolyte, which is almost double the value of the nonexfoliated layered protonated ruthenate.