Tuesday, 3 October 2017: 09:00
Chesapeake K (Gaylord National Resort and Convention Center)
Through this work we report an efficient way to produce high specific capacitance in supercapacitors devices based on zeolite template and by controllable oxidation percentage of high-quality graphene oxide. We discuss the fabrication of complex hybrid nanostructures by growing carbon-compounds on pre-synthesized nanostructured zeolites templates by chemical vapor deposition (CVD) and then etching away the zeolites, controlling the oxygen percentage in the structure. We study two types of zeolites structures, NaX and NaY to explore the side effects. Systematically, all roles of different parameters were studied, such as the composition, morphology and crystallinity of the Zeolites, as well as the CVD growth temperature and different carbon precursors to grow carbon-compound on Zeolites. Furthermore, the selection of a zeolite is also important, as type X are shown to be more resistant to thermal damage than their type Y. Finally, we could successfully remove the zeolite templates to form free-standing carbon-based nanostructures. The results presented in this analysis demonstrate the long lifespan that this type of material offers to improve capacitance.