Bimetallic MnCo alloy nanoparticles decorated boron-doped carbon nanotubes as an active and durable electrode for supercapacitor

Fabrication of N,B‐codoped Graphene Aerogel/PPy Composites for Asymmetric Supercapacitor

“…The NBGA@PPy‐TB spectra exhibited the characteristic peaks of PPy‐TB, conforming that the PPy‐TB was successfully loaded on the NBGA. As seen in the embedded diagram in Figure 3d, peaks at 617 cm −1 and 1360 cm −1 of both NBGA and NBGA@PPy‐TB samples are assigned to the O−B−O stretching vibrations and the B−N mode, indicating that B and N heteroatoms bonded with graphitic carbon in the process of hydrothermal process [27,22] …”

“…Pyridinic‐N, pyrrolic‐N and graphitic‐N configurations caused by N‐doping in carbon lattice act as electron donor to attract protons [11] . As seen in Figure 3b, the C1s spectrum can be deconvoluted into three peaks with binding energies of 284.7 eV, 285.2 eV and 286.2 eV, corresponding to sp 2 C−C, C−B and C−O, respectively [22] . The inset of Figure 3b shows peak with binding energy around 190 eV, and this peak is B1s spectra of NBGA [11] .…”

“…[11] As seen in Figure 3b, the C1s spectrum can be deconvoluted into three peaks with binding energies of 284.7 eV, 285.2 eV and 286.2 eV, corresponding to sp 2 CÀ C, CÀ B and CÀ O, respectively. [22] The inset of Figure 3b shows peak with binding energy around 190 eV, and this peak is B1s spectra of NBGA. [11] The B1s signal is weak because of the small content of doped B.…”

“…As seen in the embedded diagram in Figure 3d, peaks at 617 cm À 1 and 1360 cm À 1 of both NBGA and NBGA@PPy-TB samples are assigned to the OÀ BÀ O stretching vibrations and the BÀ N mode, indicating that B and N heteroatoms bonded with graphitic carbon in the process of hydrothermal process. [27,22]…”

A synergistic electrochemical approach of boron-doped carbon/cobalt pyrophosphate//MXene for high-performance all solid-state asymmetric devices

“…The presence of mesopores and micropores in the material creates an easy pathway for the electrolyte ions to diffuse through the bulk of the electroactive material, which improves the specic capacitance of the material. 48,49 Electrochemical impedance spectroscopy was carried out within an AC frequency range of 100 kHz to 100 mHz with an AC amplitude of 5 mV at a completely discharged state. The slope of the impedance plot of B-GC@CPP-4 in the low-frequency region showed a much steeper rise than that of the other materials corresponding to the better capacitive behaviour of the B-GC@CPP-4.…”