Mo-doped Co3O4 ultrathin nanosheet arrays anchored on nickel foam as a bi-functional electrode for supercapacitor and overall water splitting

Green Synthesis of Iron-Doped Cobalt Oxide Nanoparticles from Palm Kernel Oil via Co-Precipitation and Structural Characterization

“…Co 3 O 4 nanoparticles have been extensively studied [11][12][13][14]. In particular, the modification of their properties by progressively substituting the Co metal ions in their structure with other metal ions (Mg and Ni [14], Fe [5,15,16], Mn [17,18], Cd [19], Cu [20], Pd [21], Mo [22]), thus, forming a mixed cobalt oxide, is rather well established. Thus, the synthesis of cobalt oxide and mixed cobalt oxides using various routes has been reported, including the facile solvothermal route [23], chemical spray pyrolysis [7], chemical vapor deposition [10], sol-gel [24], hydrothermal [25], simple combustion [26] and co-precipitation methods [5].…”

Hybrid nanostructured bismuth‐cobalt oxides/hydroxides binder‐free electrodes fabricated by two‐step electrodeposition for high‐performance supercapacitors

“…The CV plots of the BC‐II electrode were investigated at different scan rates from 5 to 50 mV s −1 , as shown in Figure 5B. The highly integrated area follows the increasing scan rate owing to the polarization phenomenon of the electrode materials at a high scan rate 4,40 …”

“…The highly integrated area follows the increasing scan rate owing to the polarization phenomenon of the electrode materials at a high scan rate. 4,40 The correlation between the cathodic/anodic current peak responses (i p ) and scan rate (ν) was studied to discern the charge storage kinetics of the BC-II electrode. This formula is typically simplified as i p = aν b41,42 ; the capacitive and diffusion-controlled contributions could be quantitatively determined via calculating the b value.…”

“…47 The porous and hierarchical nanostructure of the electrode facilitates the short pathways for electron transfer and ion diffusion, consequently benefiting the Faradaic redox reaction and interfacial charge transportation. 40,48 EIS was employed to analyze the conductive behavior, and the EIS spectra are shown in Figure S5E,F ) of EIS spectra. These results reflect the equivalent internal resistance (R s ) of the substrate, the electrolytic resistance, and the contact resistance at the active material/NF interface.…”

POM-derived MoO3/CoMoO4mixed oxides directed by glucose for high-performance supercapacitors

“…This is in accordance with the previously reported results. 31,32 In order to evaluate the electrochemical performances of the prepared MoO 3 /CoMoO 4 materials, a series of electrochemical measurements including cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) are carried out in 1.0 M KOH aqueous solution with a three electrode system. Fig.…”