A high valence binary metal–organic framework as an electrode material for aqueous asymmetric supercapacitors

Abstract

The fabricated hierarchical nanostructure based on NiCo-metal–organic frameworks provides numerous pathways for electron transport, resulting in increased capacitance and superior rate performance.

One-step preparation of NiCo2S4@NiCo-LDH nano-array structures for high-performance supercapacitor electrodes

“…11–13 Therefore, hybrid capacitors are gradually becoming a hot spot for research in the field of supercapacitors. 14–16…”

Enhancing Interplanar Spacing in V2O3/V3O7 Heterostructures to Optimize Cathode Efficiency for Zn-Ion Batteries

“…In Figure 2d, the capacitive contribution escalates from 45 to 78%. 23 Utilizing the Randles−Sevcik equation (eq 2), we can determine the diffusion coefficient of the Zn 2+ ions…”

“…The same trend is depicted for four distinct scan rates. In Figure d, the capacitive contribution escalates from 45 to 78% . Utilizing the Randles–Sevcik equation (eq ), we can determine the diffusion coefficient of the Zn 2+ ions i normalp = 0.4463 n 3 / 2 F 3 / 2 C A R F − 1 / 2 T − 1 / 2 F D cv V 1 / 2 F where i p is the peak current value, “ n ” corresponds to the number of electrons, “ F ” represents Faraday’s constant (96 485 C mol –1 ), C denotes the bulk concentration (mol cm –3 ), A is the cathode area (cm 2 ), R denotes the gas constant (8.314 J mol –1 K –1 ), T represents the absolute temperature (K), D cv is the Zn 2+ ion diffusion coefficient (cm 2 s –1 ), and V corresponds to the different scan rates (mV s –1 ) in the CV curves.…”