Titanium coated with high-performance nanocrystalline ruthenium oxide synthesized by the microwave-assisted sol-gel procedure
| Autor: | Ivana Drvenica, Gavrilo Šekularac, Vladimir V. Panić, Milica Košević, Aleksandar Dekanski, Branislav Ž. Nikolić |
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| Rok vydání: | 2016 |
| Předmět: |
Oxide
Nanotechnology 02 engineering and technology 010402 general chemistry 01 natural sciences Ruthenium oxide Pseudocapacitance chemistry.chemical_compound Dynamic light scattering Electrochemistry Noble metal oxides General Materials Science Electrical and Electronic Engineering Sol-gel Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Dielectric spectroscopy Activated titanium anodes Chemical engineering Particle size Cyclic voltammetry 0210 nano-technology Oxide sols |
| Zdroj: | Journal of Solid State Electrochemistry |
| Popis: | Ruthenium oxide coating on titanium was prepared by the sol-gel procedure from well-defined colloidal oxide dispersions synthesized by the microwave (MW)-assisted hydrothermal route under defined temperature and pressure heating conditions. The dispersions were characterized by dynamic light scattering (DLS) measurements and scanning electron microscopy (SEM). The electrochemical properties were analyzed as capacitive performances gained by cyclic voltammetry and electrochemical impedance spectroscopy and as the electrocatalytic activity for oxygen evolution from acid solution. The obtained dispersions were polydisperse and contained regular particles and agglomerates of increasing surface energy and decreasing particle size as the MW-assisted heating conditions were intensified. Owing to these features of the precursor dispersions, the obtained coatings had considerably improved capacitive performances and good electrocatalytic activity for oxygen evolution at high overpotentials. |
| Databáze: | OpenAIRE |
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