Investigation and analysis of nano supercapacitors based on three-dimensional graphene 3DGNs (classification and structure)
Afshin Rashid
Abstract
Note: Graphene is one of the most widely used carbon materials in the electrode of nano supercapacitors. Theoretically, graphene has the highest electrochemical capacity of two layers of about 21.7% and 0.93%.The main problem is to reduce the capacity of the nano supercapacitor compared to the adhesion of the graphene sheets to each other and subsequently reducing the surface area and the permeability of the electrolyte ions into the electrode . Ideal is used as a supercapacitor material. The unique properties and highly porous structure of 3DGNs, or the 3D structure of graphene, not only provide a high available surface area, electrolyte penetration and create pathways for electron transfer, but also provide an excellent scaffold for the placement of active materials . 3D GNs with extremely high surface area, high specific capacity, excellent mechanical properties and high electrical conductivity provide a unique application in nano supercapacitor materials with charge-discharge capability and long life.