Proton and electron conductivity in hydrous ruthenium oxides evaluated by electrochemical impedance spectroscopy: The origin of large capacitance

Article Abstract:

A study was conducted on a series of hydrous ruthenium oxides, RuO2.xH2O, (x = 0.5, 0.3, 0) and a layered euthenics acid hydrate (H(sub 0.2)RuO(sub 2.1).nH2O) by using the electrochemical impedance spectroscopy. The results obtained demonstrate the importance of hydrous regions to allow appreciable protonic conduction for high energy and high power electrochemical capacitors.

Analysis, Spectra, Electrical conductivity, Metallic oxides, Metal oxides, Impedance spectroscopy

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In situ X-ray reflectivity and voltammetry study of Ru(0001) surface oxidation in electrolyte solutions

Article Abstract:

In situ surface X-ray scattering techniques and voltammetry studies were employed for characterizing the electrochemical surface oxidation of ruthenium Ru(0001). Results indicate that no place exchange is involved in the Ru(0001) surface oxidation and partial desorption of the bisulfate ions occurs due to the oxygen species that stay on top of the smooth Ru surface.

Usage, Oxidation-reduction reaction, Oxidation reduction reactions, Electrolyte solutions

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Ru clusters synthesized chemically from dissolved carbonyl: in situ study of a novel electrocatalyst in the gas phase and in electrochemical environment

Article Abstract:

A study is conducted on highly dispersed nanocrystalline Ru particles prepared in organic solvents as xylene or dichlorobenzene from the Ru carbonyl precursor. The results show that there is a difference in the electrochemical behavior of samples prepared due to the disorder precursor state of nano-ruthenium.

Carbonyl compounds

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