In-situ construction of carbon cloth-supported amorphous/crystalline hybrid NiCo-sulfide with permeable concrete-like morphology for high-performance solid-state hybrid supercapacitors

Electric field-induced ball-cactus-like CuCo2Sx(OH)y nano-heterostructure towards high-performance supercapacitors

“…The intercept at the Z ′-axis and the slope of the inclined line in the low-frequency region represent the intrinsic ohmic resistance ( R s ) and the diffusive impedance, respectively. 64 In the low frequency region, the CuCo 2 S x OH y -5 electrode showed the largest slope, indicating that the ion diffusion resistance between the active component and KOH electrolyte was the lowest during charging and discharging. The data fitted according to the corresponding equivalent circuit (Fig.…”

Mixed solvent-assisted synthesis of high mass loading amorphous NiCo-MOF as a promising electrode material for supercapacitors

“…The b value was in the range of 0.5-1, where the closer the b value is to 0.5, diffusion control dominates the energy storage behavior of the material, otherwise capacitance control is dominant. 59,60 Fig. 4a shows that the b values of the anodic peaks for NiCo-MOF-1, NiCo-MOF-2 and NiCo-MOF-3 were 0.84, 0.50, and 0.61, respectively.…”

Enhancing Energy Storage via Confining Sulfite Anions onto Iron Oxide/Poly(3,4-Ethylenedioxythiophene) Heterointerface

“…Pseudocapacitive materials (e.g., transition metal oxides/sulfides/phosphides) possess a highly promising as the anode for SCs. − For instance, iron oxide (Fe 2 O 3 ) has been widely applied in the negative electrode of SCs due to its variable oxidation states, low cost, and environmental benignity . These pseudocapacitive materials mainly involve two-part capacity contributions: the surface physicochemical adsorption process (capacitive behavior) and the redox reaction of mass transfer toward the bulk phase (diffusion contribution).…”