The experimental result shows a substantial increase in capacitance for nitrogen-doped graphene, whose specific capacitance is about 280 F g−1 (~ 70 F g−1 for pristine graphene) [39].
The substantial role the capacitance of the electrostatic flow probe itself and the whole measuring system plays in the physical process of electrostatic induction of charge and in the mathematical modelling of the probe and system is interpreted.
Our calculations suggest that the monolayer graphene with monovacancy, the monolayer and multilayer graphene structures with nitrogen doped around the monovacancy, and multilayer graphene structure with aluminum doped could provide substantial change of quantum capacitance.
This was followed by a region of decreasing reciprocal capacitance, indicating a substantial change in the nature of the material.
A substantial improvement in the specific capacitance has been found due to the acid treatment of the MWCNTs.
The film matrices enriched with Cd exhibit high dielectric property as obtained from the capacitance measurement and substantial thermal stability derived from thermogravimetry and differential thermal analysis.
Furthermore, the fibriform supercapacitor shows substantial mechanical flexibility with minor capacitance decrease upon continuous bending cycles, and the knitted fibriform supercapacitor exhibits the excellent wearability and integration.
Electrochemical measurements by cyclic voltammetry demonstrated a substantial increment of the specific capacitance of CNTs due to a pseudocapacitance originated from the deposited RuO2 nanoparticles.
However, it is well known that the use of Ni foam as a current collector can bring about substantial errors to the specific capacitance values of electrode materials [44].
Cyclic voltammeter studies point to a substantial increase in the SWCNTs electrode capacitance after its electrochemical treatment, which is associated with an increase in the electrode working surface accessible to solution.
