title: Multilayered nano-architecture of variable sized graphene nanosheets for enhanced supercapacitor electrode performance.
abstract: The diverse physical and chemical aspects of graphene nanosheets such as particle size surface area and edge chemistry were combined to fabricate a new supercapacitor electrode architecture consisting of a highly aligned network of large-sized nanosheets as a series of current collectors within a multilayer configuration of bulk electrode. Capillary driven self-assembly of monolayers of graphene nanosheets was employed to create a flexible, multilayer, free-standing film of highly hydrophobic nanosheets over large macroscopic areas. This nanoarchitecture exhibits a high-frequency capacitative response and a nearly rectangular cyclic voltammogram at 1000 mV/s scanning rate and possesses a rapid current response, small equivalent series resistance (ESR), and fast ionic diffusion for high-power electrical double-layer capacitor (EDLC) application.
authors.affiliation: Department of Chemical Engineering and Materials Science and Composite Materials and Structures Center, Michigan State University, East Lansing, Michigan 48824-1226, USA.
authors.forename: Sanjib
authors.initials: S
authors.lastname: Biswas
authors.forename: Lawrence T
authors.initials: LT
authors.lastname: Drzal
mesh_terms: D002244:Carbon / Q000737:chemistry*; D025802:Electric Capacitance; D004553:Electric Conductivity; D004566:Electrodes; D057927:Hydrophobic and Hydrophilic Interactions; D036103:Nanotechnology / Q000379:methods*; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water; D002244:Carbon