Spinel-structured CuCo2O4 with a mixed 1D/2D morphology for asymmetric supercapacitor and oxygen evolution electrocatalyst applications

Fabrication of polypyrrole conductive matrix covered MnNi2O4 nanocomposite as a positive electrode material for asymmetric supercapacitor applications

“…The ideal morphological structure makes it easier to increase the electrode conductivity and shows the least resistance to the electrochemical redox reaction. 33 The CV profiles demonstrate the diffusive and capacitive controlled behavior of the as-prepared electrodes, identical to a battery-type faradaic process. 34 The charge distribution is accomplished at all scan speeds using capacitive and diffusion-controlled mechanisms.…”

“…24 The Randel's circuit fit model fits the curves (Fig. S3(A 33,38 The steeper slope of MnNi 2 O 4 /PPY showed a higher probability of ion diffusion compared to those of MnNi 2 O 4 and PPY. Further, the cyclic stability of the MnNi 2 O 4 /PPY electrode was evaluated at 10 000 GCD cycles at 3 A g À1 (Fig.…”

“…More precisely, the diffusion process yields a b-value of 0.5, and the surface capacitive behavior yields a b-value of 1. 33 The b-value computation was performed for every electrode material at a scan rate of 10 mV s À1 . Based on the log i vs. log v plots (Fig.…”

Construction of Binder‐Free, Self‐Supported, Hetero‐Core–Shell Honeycomb Structured CuCo2O4@Ni0.5Co0.5(OH)2 with Abundant Mesopores and High Conductivity for High‐Performance Energy Storage

“…For example, Suresh Babu et al [38] constructed SCs using networked CCO nanosheets as the cathode and porous structured carbon nanofibers as the anode, which exhibited an operating voltage window of up to 1.6 V and a striking energy density of 25.1 Wh kg −1 . Yang et al [39] constructed a nanorod and nanosheet hybrid bimorphic CCO electrode material through a hydrothermal method, which exhibited admirable specific capacitance performance (1122 F g −1 at 1 A g −1 ). Xu et al [40] assembled an SC device, with a 3D hierarchical CCO self-supporting electrode serving as the positive electrode, which exhibited terrific electricity storage performance (38.9 Wh kg −1 at 750 W kg −1 ).…”

“…Yang et al. [ 39 ] constructed a nanorod and nanosheet hybrid bimorphic CCO electrode material through a hydrothermal method, which exhibited admirable specific capacitance performance (1122 F g −1 at 1 A g −1 ). Xu et al.…”