Battery-type CuCo2O4/CuO nanocomposites as positive electrode materials for highly capable hybrid supercapacitors

In Situ Construction of Binder-Free Stable Battery-Type Copper Cobaltite and Copper Oxide Composite Electrodes for All-Solid-State Asymmetric Supercapacitors: Cation Concentration and Morphology-Dependent Electrochemical Performance

“…80-1916). This is because CuCo 2 O 4 is not thermally stable at 400 °C in an air atmosphere, and it can disintegrate into CuO, oxygen, and a cobalt-rich spinel phase . Thus, both the electrodes’ in situ synthesized displayed mixed phases of CuCo 2 O 4 and CuO on the Ni foam, which is consistent with the reports .…”

“…The electrochemical behavior of pseudocapacitive materials is shown by the near or deviated rectangular CV curves and almost linear or triangular GCD curves. , Others are battery-type SCs, where redox reactions occur in bulk materials by phase transformations and electrochemical reactions. , The current response is proportional to the square root of the scan rate in these materials . CuCo 2 O 4 and MnCo 2 O 4 are examples of battery-type supercapacitor materials (BTMs). The electrochemical signature of the BTMs shows firm redox peaks in the CV curves and nonlinear GCD curves .…”

CuCo2O4 Nanorods Coated with CuO Nanoneedles for Supercapacitor Applications

“…However, the urchin-like microspheres appeared to be separated from each other. 25 The SEM images of CuO indicate a dendritelike morphology composed of several nanoneedles with adequate length as shown in Figure 3c,d. The SEM images of the CCO@CuO composite shown in Figure 3e,f depict the growth of needle-like CuO on the surface of CuCo 2 O 4 nanorods, which provide increased surface area and enhance the access for electrons and electrolyte ions.…”

“…The nanorods (uniformly distributed all over the FSSM) with an average diameter (∼250 nm) were observed to be interconnected to each other and emerging outward from the center. However, the urchin-like microspheres appeared to be separated from each other . The SEM images of CuO indicate a dendrite-like morphology composed of several nanoneedles with adequate length as shown in Figure c,d.…”

In situ synthesis of nanostructured Fe3O4@TiO2 composite grown on activated carbon cloth as a binder-free electrode for high performance supercapacitors

“…36,37 Two satellite signals of Fe2p 3/2 and Fe2p 1/2 peaks were observed at the same time, which can be attributed to the oxidation states of Fe 3+ and Fe 2+ in Fe 3 O 4 nanoparticles. 38,39 Two strong peaks of rutile type crystals are shown in the Ti2p spectra (Fig. 4(b)), and the binding energies are 458.8 eV (Ti 3+ ) and 464.5 eV (Ti 4+ ) respectively, which correspond to the two chemical energy levels of Ti2p 3/2 and Ti2p 1/2 .…”