A metal–organic framework template derived hierarchical Mo-doped LDHs@MOF-Se core–shell array electrode for supercapacitors

Abstract

Herein, we have managed to conceive and fabricate a core-shell structured triangle-like array, where selenylation-treated MOF array in-situ grown on a conducting substrate as high conductive framework to support high...

Controllable Synthesis of Ultrathin Defect‐Rich LDH Nanoarrays Coupled with MOF‐Derived Co‐NC Microarrays for Efficient Overall Water Splitting

“…Therefore, it is an imperative but challenging task to construct highly-active noble-metal-free bifunctional electrocatalysts by coupling the efficient catalytic active species of HER with those of OER into one electrode controllably to achieve superior overall water splitting performances through their cooperative effects. [15][16][17] Two dimensional (2D) nanomaterials, including graphene, [18,19] black phosphorus (BP), [20] transition metal dichalcogenides, [21,22] hexagonal boron nitride, [23,24] metal-organic frameworks (MOFs), [25][26][27][28][29][30] MXenes, [31] and layered double hydroxides (LDHs), [32][33][34][35] etc, have attracted tremendous attention in the field of energy conversion and storage owing to their high surface areas and favorable electronic properties. Among them, LDHs are the most promising OER electrocatalysts to replace noble metals because of their low-cost, rich resources, and high intrinsic activities.…”

Effect of pomelo seed-derived carbon on the performance of supercapacitors

“… 1–5 Generally, supercapacitors can be classified into three categories according to the capacitor source: electrical double layer capacitors (EDLCs), pseudo-capacitors and hybrid capacitors. 6–8 In EDLCs, the capacitance is derived from the pure electrostatic charge accumulation at the electrode and electrolyte interface. 9 On account of this, the electrode becomes an important factor affecting the performance.…”

Enhanced ionic diffusion interface in hierarchical metal-organic framework@layered double hydroxide for high-performance hybrid supercapacitors

“…The Cu 2p peaks for HKUST-1@CoNiLDH display negative shifts of ~0.5 eV, higher peak intensity and peak area, indicating the higher electron-coupling and content of Cu in HKUST-1@CoNiLDH (Figure 2d) [37]. The fitted peaks for Co 2p spectrum with the binding energy of 780.7/783.6 and 796.1/797.1 eV are assigned to the 2p 3/2 and 2p 1/2 spin orbitals of Co 3+ /Co 2+ in HKUST-1@CoNiLDH (Figure 2e) [29]. The 2p 3/2 and 2p 1/2 peaks for Ni 2p XPS spectra were also split into Ni 3+ and Ni 2+ peaks.…”

“…It not only provides a high-efficient, facile and eco-friendly synthetic process, but also enhances the electrochemical properties. For example, an electrodeposited hierarchical Mo-doped MOF/NiCo-LDHs showed high area capacity of 5.16 C cm -2 and high rate capability [29].…”