Regulating Ni³⁺ contents by a cobalt doping strategy in ternary Ni_xCo_3−xAl₁-LDH nanoflowers for high-performance charge storage

Abstract

NiAl-LDH and CoAl-LDH as typical two-dimensional layered materials have been widely used as supercapacitor cathodes due to their special composition, morphology and rich electrochemical active centers. However, a clear strategy...

Constructing Flower-Shaped NiCo2S4@CoAl-LDH Heterojunction Nanosheets Exhibits Extraordinary Electrochemical Behavior for a Light-Assisted Asymmetric Supercapacitor

“…Furthermore, the gap within the peaks of oxidation and reduction widened as the scan rate was progressively raised. This might happen because resistance goes up and the electrode becomes polarized. , Generally, the overall capacity of Faraday quasi-capacitance materials consists of diffusion control and capacity control, with the latter remaining unaffected by the scan rate or current density. The extent of their influence on the total capacitances, i.e., the variation law of current with scan rate, could be expressed quantitatively as follows: , i = a v b log ( i ) = b log ( v ) + log ( a ) In this instance, i stands for magnitude of current, a and b are constants, and v represents scan rate.…”

“…This might happen because resistance goes up and the electrode becomes polarized. 51,56 Generally, the overall capacity of Faraday quasi-capacitance materials consists of diffusion control and capacity control, with the latter remaining unaffected by the scan rate or current density.…”