Controllable crystal growth of a NiCo-LDH nanostructure anchored onto KCu₇S₄ nanowires via a facile solvothermal method for supercapacitor application

Abstract

The application of NiCo-LDHs as electrode materials for supercapacitors has attracted widespread attention.

Hydrazine Hydrate Induced Three-Dimensional Interconnected Porous Flower-like 3D-NiCo-SDBS-LDH Microspheres for High-Performance Supercapacitor

“…The enhanced electrochemical performance of the 3D-NiCo-SDBS-LDH electrode can be attributed to the porous structure, which increased the area of contact between the electrode and the electrolyte, and the rough surface, which provided additional active sites and increases conductivity. Compared with other Co-based LDH electrode materials as illustrated in Table 1 [10,32,[46][47][48][49][50][51][52][53], such as CoAl-LDH/polypyrrole/graphene (864 [50], and α-phase NiCo LDH microsphere (1120 F•g −1 at 1 A•g −1 ) [51], our synthesized 3D-NiCo-SDBS-LDH electrode also showed a good charge storage capability. Additionally, as shown in Figure 6d, the specific capacitance values at various current densities were determined and compared to pristine NiCo-SDBS-LDH.…”

Optimized Fabrication of Bimetallic ZnCo Metal–Organic Framework at NiCo-Layered Double Hydroxides for Multiple Storage and Capability Synergy All-Solid-State Supercapacitors

“…On the other side, the absorption bands at 1142 and 992 cm –1 illustrate the stretching and bending vibrations of the C–N bond in the aromatic 1,3-diazole ring, respectively . In addition, the stretching vibration of the CN is demonstrated by the peak at 1564 cm –1 , while the absorption bands at 1636 and 1653 cm –1 verify the bending vibrations of the water molecules and N–H bond, respectively. , However, the absorption peak at 2184 cm –1 is attributed to the stretching vibration of OCN – resulting from the decomposition of urea . In addition, the two peaks located at 3128 and 2920 cm –1 are indorsed to the aromatic and aliphatic C–H stretching of 1,3-diazole, respectively, while the broad bands positioned between 3406 and 3490 cm –1 are ascribed to the stretching vibration of O–H groups in adsorbed/interlayer water molecules. , In brief, the FTIR spectrum has confirmed the successful growth of ZnCo-MOF tripods on the surface of NiCo-LDH nanowires, in good agreement with XRD results.…”

“…38,42 However, the absorption peak at 2184 cm −1 is attributed to the stretching vibration of OCN − resulting from the decomposition of urea. 43 In addition, the two peaks located at 3128 and 2920 cm −1 are indorsed to the aromatic and aliphatic C−H stretching of 1,3diazole, respectively, 38 while the broad bands positioned between 3406 and 3490 cm −1 are ascribed to the stretching vibration of O−H groups in adsorbed/interlayer water molecules. 42,43 In brief, the FTIR spectrum has confirmed the successful growth of ZnCo-MOF tripods on the surface of NiCo-LDH nanowires, in good agreement with XRD results.…”

Construction of a high-performance flexible hybrid capacitor at extreme working temperature (−20 °C)

“…There is a polarization phenomenon associated with redox reactions at high scan rates. The electrochemical mechanism of the This journal is © The Royal Society of Chemistry 2024 electrode materials can be described by the following equations: 41,42 ZnCo 2 S 4 + 4OH − ↔ ZnSOH + 2CoSOH + SOH − + 3e −…”