Mixed-phase composites derived from cobalt terephthalate as efficient battery-type electrodes for high-performance supercapattery

Utilization of lead-based saturated adsorbents for the fabrication of battery-like hybrid asymmetric supercapacitors

“…Fig. 7(f)† shows the Ragone plot of the device as compared to other known devices like MnO 2 -FeSe 2 //AC (55.39 Wh kg −1 at 850 W kg −1 ), 70 3D-C-NiCo 2 O 4 /Ni//3D Fe 3 S 4 @NiCo/SS (49.8 Wh kg −1 at 782 W kg −1 ), 71 Cu-MOF//AC (41 Wh kg −1 at 2400 W kg −1 ), 72 Cu 0.27 Co 2.73 O 4 //AC (35.78 Wh kg −1 at 400 W kg −1 ), 73 FeP 2 /Co 2 P/Ni//AC (41.2 Wh kg −1 at 445 W kg −1 ), 74 MnO 2− x @CoS//porous carbon (34.72 Wh kg −1 at 597.24 W kg −1 ), 75 Fe 2 O 3 @α-Ni(OH) 2 //AC (44.51 Wh kg −1 at 2465 W kg −1 ) 76 and TiN/C//TiC/C (45.2 Wh kg −1 at 535.2 W kg −1 ). 77 The fabricated device had higher ED than all the devices while it had a PD higher than that of Cu 0.27 Co 2.73 O 4 //AC, FeP 2 /Co 2 P/Ni//AC, MnO 2− x @CoS//porous carbon and TiN/C//TiC/C devices.…”

Two-Dimensional Synergistic Interfacial Orientation on Tin Oxide-Reinforced Cobalt Carbonate Hydroxide Heterostructures for High-Performance Energy Storage

“…Owing to the apparent battery-type charge storage process, these materials have high electrochemical activity with excellent kinetics almost equivalent or even superior to the capacitor-type counterparts. 9,10 Furthermore, the choice of the electrode is primarily governed by the energy storage mechanisms and centered on kinetic behaviors endorsement depending on either diffusion-controlled or intercalationcontrolled charge storage performance of the electrode materials. 11,12 The cobalt hydroxides-based battery-type electrodes have drawn interest owing to their 2D layered structure, rich electroactive sites, multiple oxidation states, and high theoretical capacity.…”

“…It should be clear that the material properties of TMHs have notable attributes such as simple fabrication techniques, large surface regions, significantly ample electroactive sites, and integration with heterogeneous electrocatalyst supports. − Meanwhile, the emergence of effective morphological architecture with battery-type electrochemical profile has gained recognition for the TMHs electrode, which will enable further advances in the energy density of supercapacitors (SC). − In general, each charge/discharge process can cause transition of at least one phase toward the high/low valence substances, which tends to rise in the charge storage behavior of the battery-type material. Owing to the apparent battery-type charge storage process, these materials have high electrochemical activity with excellent kinetics almost equivalent or even superior to the capacitor-type counterparts. , Furthermore, the choice of the electrode is primarily governed by the energy storage mechanisms and centered on kinetic behaviors endorsement depending on either diffusion-controlled or intercalation-controlled charge storage performance of the electrode materials. , The cobalt hydroxides-based battery-type electrodes have drawn interest owing to their 2D layered structure, rich electroactive sites, multiple oxidation states, and high theoretical capacity. − In view of the environmental convenience, synthesis flexibility, and theoretical capacity, cobalt carbonate hydroxides have spurred interest as high-performance battery-type electrodes.…”