High-performance multi-dimensional nitrogen-doped N+MnO2@TiC/C electrodes for supercapacitors

Efficient coupling of MnO2/TiN on carbon cloth positive electrode and Fe2O3/TiN on carbon cloth negative electrode for flexible ultra-fast hybrid supercapacitors

“…A regular lattice structure around the diffraction ring of MnO 2 can also be observed indicating the SAED pattern of TiN. 15 The core-shell composed of MnO 2 nanosheets and TiN nanotubes is conrmed by the elemental maps of MnO 2 /TiN in Fig. 2(g1) and (g2) and the elemental distributions are presented in Fig.…”

“…The specific capacitance of the electrode C s is determined by eqn (1) and the energy ( E ) and power ( P ) densities are determined by eqn (2) and (3) : 15 where C s (F g −1 ) is the specific capacitance, I (A) is the current density during charging and discharging, Δ t (s) is the discharging time, m (g) is the mass of the active substance in the electrode, Δ V (V) is the pressure drop in the test, v (V s −1 ) is the scanning rate in CV, and ∫ i d V is the area of the CV curve.…”

Construction of α-MnO2 on Carbon Fibers Modified with Carbon Nanotubes for Ultrafast Flexible Supercapacitors in Ionic Liquid Electrolytes with Wide Voltage Windows

“…The carbon nanotubes are connected in a staggered and dense way to promote the transfer of electrons, ion extraction and insertion, and the effective area for the active materials. As shown in Figure 3d-f, the CNTs form a 3D porous skeleton and provide abundant nucleation sites for uniform MnO2 deposition, while preventing the agglomeration of the active substances during the electrochemical reaction [27]. Figure 3f shows many micropores in the α-MnO2@CNTs/CC electrode for enhanced electrolyte circulation in the electrode and reduced contact impedance between the electrode and electrolyte.…”

“…The specific capacitance of the composite electrodes C s was calculated by Equation (1) and the energy density (E) and power density (P) were calculated by Equations ( 2) and (3), respectively [26,27]:…”

Fabrication of Bimetallic Oxides (MCo2O4: M=Cu, Mn) on Ordered Microchannel Electro-Conductive Plate for High-Performance Hybrid Supercapacitors

“…As shown in Figure 5c, the CV curve of the CuCo 2 O 4 /OMEP electrode presents a rectangle, and the CV curve gradually increases with the increase in scanning speed. Figure 5d The specific capacitance of the electrode C s and the surface capacitance of the CV curve C CV can be calculated according to Equations ( 6) and (7), and the energy (E) and the power (P) density were determined according to the equations as follows [41]:…”