Graphene for supercapacitor applications

Graphene/Multi-Walled Carbon Nanotubes Hybrid Materials for Supercapacitors

“…This is because of its high specific surface area, excellent electron mobility, and superior mechanical properties [6]. Although the theoretical maximum double-layer capacitance of graphene can attain a value of up to 550 F/g [4], most graphene-based supercapacitors have limited capacitances.…”

Graphite Oxide: An Interesting Candidate for Aqueous Supercapacitors

“…In this context, up-to-now the most promising approach to obtain graphene for SC involves the chemical oxidation of graphite followed by an exfoliation process to produce graphene oxide and, finally, a controllable reduction to obtain reduced graphene oxide [11][12][13][14]. As lower-cost materials for supercapacitors are a priority, the intermediate graphene oxide will have an advantage over reduced graphene oxide.…”

“…As lower-cost materials for supercapacitors are a priority, the intermediate graphene oxide will have an advantage over reduced graphene oxide. It has been reported that graphene oxide itself may be promising in EDLC electrodes [16,17] but its application appears to be limited by its low conductivity [11,12,14].…”

“…In spite of the potential of graphene, it still needs to compete with activated carbons in terms of cost/performance [11,12,15] to be used in practice. In this context, up-to-now the most promising approach to obtain graphene for SC involves the chemical oxidation of graphite followed by an exfoliation process to produce graphene oxide and, finally, a controllable reduction to obtain reduced graphene oxide [11][12][13][14].…”

“…have been extensively investigated as electrodes in EDLC [3][4][5][6][7][8][9][10]. The number of candidates has increased with the recently discovered graphene, since its large theoretical surface area and high electrical conductivity result key features for application in SC [11][12][13][14].…”