| 초록 |
Despite the unparalleled extensive use of ruthenium dioxide (RuO2), in both crystalline and amorphous forms, in a wide range of electrochemical applications, the intrinsic electron-transfer (ET) rate constant estimations at RuO2 electrodes prepared at different temperatures are not reported in detail. In this paper, the ET rate constants for RuO2 electrodes are estimated by rotating disk electrode (RDE) technique using an oxide-sensitive, non-interacting Fe3+/Fe2+ redox probe. Chemically modified RuO2 electrodes using oxide powders assembled on Pt support using polyvinylchloride binder are used. RuO2 powders prepared at five temperatures, 300 to 700 ℃, are studied to investigate the dependence of ET activity of electrodes on the oxide preparation temperature. |
