التفاصيل البيبلوغرافية
| العنوان: |
Electrochemical behavior of tungsten-containing nanocomposite with siloxane matrix. |
| المؤلفون: |
M. Krotova, Yu. Pleskov, V. Elkin, A. Bozhko, M. Shupegin |
| المصدر: |
Russian Journal of Electrochemistry; Jan2009, Vol. 45 Issue 1, p93-100, 8p |
| مصطلحات موضوعية: |
ELECTROCHEMICAL analysis, GLASS-ceramics, NANOSTRUCTURED materials, TUNGSTEN, SILOXANES, MICROALLOYING, ELECTROLYTE solutions, IMPEDANCE spectroscopy |
| مستخلص: |
Abstract Electrochemical properties of a thin-film nanocomposite “silicon-carbon matrix-tungsten carbide” deposited onto pyroceramics (“sitall”) substrate are studied by potentiodynamic curves and electrochemical impedance spectroscopy. Transfer coefficients in model redox system [Fe(CN)6]3−/4− are measured. With the decreasing of the films’ electrical resistance, their experiment behavior gradually changed from that of “poor conductor” till nearly metal-like one. In particular, the electrode differential capacitance increases, which is explained by the increase in the number of conducting metal-containing clusters in the film bulk and at the film/electrolyte solution interface. Some specific features of the complex-plane plots of impedance spectra are tentatively explained by the adsorption at the nanocomposite surface elements. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
