Electrochemical Synthesis of Mesoporous Architectured Ru Films Using Supramolecular Templates
- 1 September 2020
- Vol. 16 (35), e2002489
- https://doi.org/10.1002/smll.202002489
Abstract
The electrochemical synthesis of mesoporous ruthenium (Ru) films using sacrificial self-assembled block polymer micelles templates, and its electrochemical surface oxidation to RuO(x)is described. Unlike standard methods such as thermal oxidation, the electrochemical oxidation method described here retains the mesoporous structure. Ru oxide materials serve as high-performance supercapacitor electrodes due to their excellent pseudocapacitive behavior. The mesoporous architectured film shows superior specific capacitance (467 F g(Ru)(-1)) versus a nonporous Ru/RuO(x)electrode (28 F g(Ru)(-1)) that is prepared via the same method but omitting the pore-directing polymer. Ultrahigh surface area materials will play an essential role in increasing the capacitance of this class of energy storage devices because the pseudocapacitive redox reaction occurs on the surface of electrodes.Funding Information
- Australian Research Council (DP190102944)
- National Health and Medical Research Council (1199984)
- Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT 1170809)
This publication has 51 references indexed in Scilit:
- Size Specifically High Activity of Ru Nanoparticles for Hydrogen Oxidation Reaction in Alkaline ElectrolyteJournal of the American Chemical Society, 2013
- Shape- and Size-Controlled Synthesis in Hard Templates: Sophisticated Chemical Reduction for Mesoporous Monocrystalline Platinum NanoparticlesJournal of the American Chemical Society, 2011
- Facile synthesis of highly ordered mesoporous silver using cubic mesoporous silica template with controlled surface hydrophobicityChemical Communications, 2008
- Textural and Capacitive Characteristics of Hydrothermally Derived RuO2·xH2O Nanocrystallites: Independent Control of Crystal Size and Water ContentChemistry of Materials, 2007
- Hydrothermal Synthesis of Hydrous Crystalline RuO[sub 2] Nanoparticles for SupercapacitorsElectrochemical and Solid-State Letters, 2004
- PRIMUS: a Windows PC-based system for small-angle scattering data analysisJournal of Applied Crystallography, 2003
- Proton NMR and Dynamic Studies of Hydrous Ruthenium OxideThe Journal of Physical Chemistry B, 2002
- Reversibility and Growth Behavior of Surface Oxide Films at Ruthenium ElectrodesJournal of the Electrochemical Society, 1978
- Ruthenium(III) Chloride Complexes: RuCl2+Journal of the American Chemical Society, 1960
- The Determination of the Formulas of Aqueous Ruthenium(III) Species by Means of Ion-exchange Resin: Ru+3, RuCl+2 and RuCl2+Journal of the American Chemical Society, 1958