Oriented synthesis of Co3O4 core-shell microspheres for high-performance asymmetric supercapacitor

Two Polyoxometalate‐Based Hybrid Compounds Modified by Iron Schiff Base Complexes: Syntheses, Crystal structures, Cyclic Voltametric Studies and Nonlinear Optical Properties

“…In addition, the peak potentials changed progressively along with increasing scan speed from 50 to 500 mV s −1 for compounds 1 and 2 , where the anodic peaks transferred to positive potential direction and the corresponding cathodic peaks shifted towards negative potentials direction simultaneously. The slight shifts of the redox peaks of two compounds could be ascribed to the conductivity and thereby polarization of the electrodes [44–46] . In addition, the fact that the linear relationship between the anodic and cathodic peak currents versus the scan speeds from 50 to 500 mV s −1 can be observed (inset in Figure 5), implies that the redox course of 1 ‐ and 2 ‐CPSs have almost no structural impact and two compounds have potential applications in electrochemistry [47] …”

“…The slight shifts of the redox peaks of two compounds could be ascribed to the conductivity and thereby polarization of the electrodes. [44][45][46] In addition, the fact that the linear relationship between the anodic and cathodic peak currents versus the scan speeds from 50 to 500 mV s À 1 can be observed (inset in Figure 5), implies that the redox course of 1-and 2-CPSs have almost no structural impact and two compounds have potential applications in electrochemistry. [47] Nonlinear optical properties…”

Synthesis of Homogeneous Hollow Co3O4 Microspheres for Enhanced Cycle Life and Electrochemical Energy Storage Performance

“…FTIR spectroscopy (Figure b) is implanted to verify the functional groups presence of Co 3 O 4 precursor and Co 3 O 4 samples. The absorption peaks at wavelengths of 1629 cm −1 and 3630 cm −1 in the spectrum of the Co 3 O 4 precursor are the stretching vibration peaks of OH − in water molecule, which are absorbed by the sample during storage. And the peak at wavelength of 3492 cm −1 is a typical absorption peak of OH − of inter‐layer water molecules .…”

Carbon supported manganese(IV)–cobalt(II/III) oxides nanoparticles for high-performance electrochemical supercapacitors

“…But the relatively high cost, toxicity and limited environmental distribution of RuO 2 restrict its large-scale commercial application in SCs. On the contrary, TMOs, specially Co 3 O 4 [11][12][13] and MnO 2 [14,15] are considered rather promising electrode materials for SCs, since both of them are low priced, abundant, environment-friendly materials that are rich in oxidation states for efficient charge transfer, have various morphologies and exceptionally high theoretical specific capacitances (C s ) of 3560 or 1370 F g −1 , respectively. However, regardless the fascinating characteristics typically TMOs suffer from their low actual specific capacitance due to poor conductivity and electrochemical stability, low contacting area with the electrolytes and structural degradation during the charge-discharge process [16,17].…”