Ceria nanoflowers decorated Co3O4 nanosheets electrodes for highly efficient electrochemical supercapacitors

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

“…Among various transition metal oxides, Co 3 O 4 has attracted wide attention for its high energy storage capacity (3560 F g −1 ), low cost, environmental friendliness, multiple valence sites, and high activity in water oxidation [ 99 , 100 ]. Electron and ion transport efficiency for charge storage in Co 3 O 4 -based pseudocapacitors mainly depends on electrode properties such as surface area, morphology, and alignment of nanocrystalline phases [ 101 , 102 ].…”

Iron MOF-Derived Fe2O3/NPC Decorated on MIL-88A Converted Fe3C Implanted Electrospun Porous Carbon Nanofibers for Symmetric Supercapacitors

“…Supercapacitors (SCs), also known as ultracapacitors, are energy storage devices with great efficiency and low internal resistance that have more power density than batteries. − Supercapacitors have distinct benefits over conventional energy storage devices, including extended cycle life, flexible packaging, high power density, broad temperature range, lightweight, and low maintenance. − Currently, the performance of SCs has significantly improved since electrode materials have been designed at the nanoscale to play an active role by enabling more effective charge storage mechanisms. − Furthermore, the electrochemical nature and stable performance of SCs are mostly dogged by the nature and arrangement of the electrode materials used during the manufacturing process. , The smooth insertion/desertion of electrolyte ions onto the electrode surface during electrochemical charging–discharging is vital for storing electrochemical energy. , Only from a highly customized morphological design of the electrode materials is it feasible to achieve remarkable energy storage performance. , Currently, most research focuses on developing high-performance positive electrode materials, while only a few studies are being performed to develop negative electrode materials. , To be an efficient supercapacitor, the positive and negative electrodes should have individually high specific capacitance. Hence, here, we focus on the development of an effective negative electrode material.…”