Direct growth of nickel terephthalate on Ni foam with large mass-loading for high-performance supercapacitors

Abstract

Nickel terephthalate is grown on Ni foam with high mass-loading and its electrochemical performance can be greatly enhanced by polyaniline electrodeposition.

Electrodeposited Stable Binder‐Free Organic Ni(OH)2 Flexible Nanohybrid Electrodes for High‐Performance Supercapacitors

“…The peak at 406.8 eV is the N 1s satellite feature . Figure e exhibits the peaks at 284.2, 284.6, 285.47, and 288.4 eV which can be observed due to the carbon components of C—C, aromatic rings, C–N, and carboxylate/N—C═O groups, respectively . All of the aforementioned results support the successful electrochemical deposition of peptide/Ni(OH) 2 nanohybrids.…”

“…The fitted O 1s (Figure c) core level spectrum of BSeFF/Ni(OH) 2 exhibits three peaks at 530.6, 531.2, and 532.6 eV binding energies, which are assigned to oxygen–metal bond, hydroxyl groups (O—H), and carboxylate groups (O—C═O) . The carbon‐bound nitrogen components were confirmed by high‐resolution N 1s spectrum (Figure d).…”

“…The energy separation between Ni 2p 1/2 and Ni 2p 3/2 is 17.6 eV, which indicates the presence of Ni in +2 oxidation state in the organic–inorganic nanohybrid. In addition, two satellite peaks at 879.5 (Ni 2p 1/2 ) and 861.4 eV (Ni 2p 3/2 ) are also observed in the Ni 2p spectrum …”

“…Liu and co‐workers reported the synthesis of nickel‐based pillared organic–inorganic hybrid material using the solvothermal method, which showed a specific capacitance of 552 F g −1 at 1 A g −1 . One‐pot hydrothermal growth of nickel terephthalate on nickel foam (NF) followed by the electrodeposition of polyaniline (PANI) nanofibers showed higher capacitance with high cycling stability . The presence of nickel and organic moieties in the organic–inorganic nanohybrids provides structural stability during fast faradic reactions which enhance energy storage performance.…”

Significantly Enhanced Ultrathin NiCo-based MOF Nanosheet Electrodes Hybrided with Ti3C2Tx MXene for High Performance Asymmetric Supercapacitors

“…4c), the fitting peaks at 873.8 and 856.3 eV with a spin-energy separation of 17.5 eV and satellite peaks at 880.1 and 861.5 eV correspond to the Ni 2p 1/2 and Ni 2p 3/2 spin-orbits, respectively, suggesting the Ni 2+ oxidation state in the NiCo-MOF. 57 The high-resolution C 1s spectrum (Fig. 4d) presented four peaks at 288.5, 287.9, 285.3 and 284.5 eV, which can be assigned to C=C, C-O, C=O, and O-C=O bonds, respectively.…”