ABSTRACT
The worldwide population growth has created excess demand for more energy sources to meet the expectation of humanity. There are novel concepts developed to fabricate high-performance electrode materials in energy storage to suit the market. Graphene oxide (GO) is at the forefront of new technologies and innovations. GO exhibits tremendous energy storage potential due to its excellent carrier mobility of 200,000 cm2 V−2 S−1, transportation, high conductivity, excellently high specific surface area, lightweight, light transmittance and good mechanical properties. In energy storage applications, pure GO exhibits a lower performance unless it is a composite. In using graphene, there are stable techniques required to produce different GO composites. The GO composites are a large class of materials hybridized for functional complementary. This book chapter covers GO synthesis techniques and different GO composite combinations, including GO-metal/metal oxides, GO-non-metals, GO-polymers, and other carbon materials. This chapter looks at different synthesis methods, conditions and properties induced for a given functionality for a hybrid supercapacitor application. The GO composite aims to bridge the gap between batteries and supercapacitors for the hybrid to have a short charge time, excellent cycle stability, high retention time, high power and high energy density. The GO and composite are believed to solve the burning issue of energy stockpiles. The hybrid supercapacitors are capable of stockpiling charges which can provide a more robust application by enhancing energy density where GO and carbon-based materials are used in the different types of modifications.
