| Summary: | 碩士 === 國立高雄應用科技大學 === 化學工程與材料工程系 === 98 === This study is regarding using anodic deposition to prepare three-dimensional (3-D) porous hydrous ruthenium oxide supercapacitors with SiO2 colloidal templates. The templates are made by using SiO2 micro/nano-meter spheres stacking on a titanium foil. The hydrous RuCl3•xH2O is directly electroplated on the titanium foil. By annealing at different temperature to observe the electrochemical characteristics after the templates are removed. To find out the best condition suitable for the supercapacitors, the surface morphology and textural characterization are analyzed through scanning electron microscope (SEM) and X-ray diffraction (XRD), respectively.
The electrochemical characterizations are analyzed through cyclic voltammograms, different scan rate, reversibility and cycle life test. This study successfully prepares the ruthenium oxide electrode with 3-D porous textural. The porous turnels, which are good for access and transmission of protons and electrons can been seen through the SEM. The results of XRD and EDS demonstrate the diffraction peak of ruthenium oxide under high temperature treatment. As for electrochemical properties, the best result of specific capacitance is 507 F/g under heat treatment of 150℃. However, although the result of specific capacitance is lower under heat treatment of 200℃, the cyclic voltammograms, reversibility and cycle life test are distinguish then other heat treatments. For the reversibility test, by changing maximum potential, the current response is fast quite and reversible; therefore, using anodic deposition of ruthenium oxide is good in reversible test.
From the aspects of properties, structure and electrochemical properties, it has great potential application of using anodic deposition to prepare three-dimensional (3-D) porous hydrous ruthenium oxide supercapacitors with SiO2 colloidal templates.
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