Significantly enhanced electrochemical performance of 2D Ni-MOF by carbon quantum dot for high-performance supercapacitors

Recent progress on construction and applications of metal‐organic frameworks‐based materials for lithium‐ion batteries and supercapacitors

“…These layered V-MOF nanorods are formed with a rhomboid structure, which render their availability for high-performance zinc-ion batteries. [45] In addition, flower-like Ni-MOF, [46] a bimetallic NiCo-MOF with a dandelion-type hollow structure, [47] and a Hericium erinaceus-like Cu-MOF with a hierarchical structure, were also fabricated using this method. [48] In recent years, the synthetic strategy of precipitation or stirring or ultrasonic shaking the mixed solution to produce pristine MOFs is considered to be a simple, convenient, and environmentally friendly synthesis method.…”

Recyclable Fe3O4/MWCNT/CNF composite nanopaper as an advanced negative electrode for flexible asymmetric supercapacitors

“…Typically, the b value ranges from 0.5 to 1, with that of the surface capacitive-controlled process close to 1, while that for the diffusion-controlled process is close to 0.5. 15,55 Specically, the surface capacitance control process has faster reaction kinetics, while the diffusion control process has slightly slower reaction kinetics. Moreover, b values of all samples are in the range of 0.5 to 1.0 (Fig.…”

N-Doped Graphene Quantum Dots Incorporated into NiCo Bimetallic-Organic Framework as an Electrocatalyst for Alkaline Water Splitting

“…Using secondary metal ions in the structure of MOFs creates a significant synergistic effect and makes more active sites exposed to electrocatalytic reactions. , Interestingly, the combination of functional materials with bimetallic MOFs can significantly increase the electrical conductivity and chemical stability of MOFs, which is reported to be very advantageous for use in catalysis. , In this regard, using zero-dimensional quantum dots like graphene quantum dots (GQDs) and carbon quantum dots (CQDs) for creating composites with MOFs can be effective. , The carbon-based quantum dots change the partial electronic atmosphere by constructing electron-rich regions, thus increasing the electronic conductivity of MOF-based composites . Furthermore, carbon-based quantum dots, owing to being rich in the negatively charged oxygen functional groups, can improve the wettability of the surface and optimize the morphologies of composites from the point of view of reactivity in aqueous environments . Accordingly, benefiting from the high electrical conductivity, richly functional groups, and numerous edge and defect sites, carbon-based quantum dots can substantially improve the electrocatalytic properties of MOFs .…”

“…12 Furthermore, carbon-based quantum dots, owing to being rich in the negatively charged oxygen functional groups, can improve the wettability of the surface and optimize the morphologies of composites from the point of view of reactivity in aqueous environments. 13 Accordingly, benefiting from the high electrical conductivity, richly functional groups, and numerous edge and defect sites, carbon-based quantum dots can substantially improve the electrocatalytic properties of MOFs. 14 On the other hand, MOF materials can be used as an ideal host matrix for producing composites containing quantum dots due to their extremely high porosity and adjustable pore size.…”