Reduced graphene oxide-silsesquioxane hybrid as a novel supercapacitor electrode.

摘要: Supercapacitor energy storage devices recently garnered considerable attention due to their cost-effectiveness, eco-friendly nature, high power density, moderate and long-term cycling stability. Such figures of merit render supercapacitors unique sources portable electronic devices. Among various materials, graphene-related materials have established themselves as ideal electrodes for the development elite because excellent electrical conductivity, surface area, outstanding mechanical properties combined with possibility tailor physical chemical via functionalization. Increasing area is a powerful strategy improve performance supercapacitors. Here, modified polyhedral oligosilsesquioxane (POSS) used electrochemical reduced graphene oxide (rGO) through enhancement porosity extension interlayer space between sheets allowing efficient electrolyte transport. rGO–POSS hybrids exhibited specific capacitance 174 F g−1, density reaching 2.25 W cm−3, 41.4 mW h cm−3 endowed by introduction POSS spacers. Moreover, these electrode display durability >98% retention after 5000 cycles.