Molecular modification of highly degenerate semiconductor as an active electrode to enhance the performance of supercapacitors

One-Step Self-Assembly Synthesis α-Fe2O3 with Carbon-Coated Nanoparticles for Stabilized and Enhanced Supercapacitors Electrode

“…According to the Randles Sevcik equation [37,38], if taking the peak current values of CV curves and plotting logarithm of peak current values versus logarithm of scan rate, the slope is~0.75, indicating that the α-Fe 2 O 3 @C mainly shows double-layer capacitance and pseudocapacitive behavior. Therefore, this system could be described as a supercapacitor.…”

Cyclic Voltammetric Studies on the Role of Electrode, Electrode Surface Modification and Electrolyte Solution of an Electrochemical Cell

“…The best practices on the use of this setup are well summarized by the Stoller et al [12]. Further, recently we also well testified the reliability of this setup in the characterization of supercapacitors [14]. Firstly, two symmetrical carbon electrodes are immersed in electrolyte solution (in this case the distilled water and ethylene glycol are used as an electrolyte).…”

Axial Ligand Coordination Tuning of the Electrocatalytic Activity of Iron Porphyrin Electrografted onto Carbon Nanotubes for the Oxygen Reduction Reaction

“…Metal macrocycles, including Fe porphyrin, [5b] Co corrole, [11] and Fe phthalocyanine, [12] have been covalently grafted onto graphene and carbon nanotubes as an efficient electrocatalyst for ORR through the C−C bond formation via the chemical reduction of diazonium salt precursors. Electrografting is an alternative approach for surface covalent functionalization, which has been widely used in the preparation of sensors, [13] modified electrodes, [14] and capacitors [15] . Because voltage is applied to the electrode, the diazonium salt is attracted to the electrode surface by electrostatic interaction and is quickly reduced.…”

“…Electrografting is an alternative approach for surface covalent functionalization, which has been widely used in the preparation of sensors, [13] modified electrodes, [14] and capacitors. [15] Because voltage is applied to the electrode, the diazonium salt is attracted to the electrode surface by electrostatic interaction and is quickly reduced. Hence, unlike the chemical reduction method, the reaction sites are located only on the electrode surface where electrografting occurs.…”