Decorating CoNi layered double hydroxides nanosheet arrays with fullerene quantum dot anchored on Ni foam for efficient electrocatalytic water splitting and urea electrolysis

Fullerenes as Key Components for Low‐Dimensional (Photo)electrocatalytic Nanohybrid Materials

“…[45] TheHER properties of the fullerene-2D heterostructures were superior to those of the C 60 and of the 3D MoS 2 /CFP,s howing an overpotential h 10 value of 172 mV and aT afel slope of 60 mV dec À1 for the optimized C 60 loading of 0.5 mg mL À1 (Figure 11 G,H). Furthermore,t he values of C dl and ECSA were plotted as [43] Copyright 2020, Elsevier.E )Cyclic voltammograms (CVs) of the graphene-C 60 heterostructures in N 2 -a nd O 2saturated 0.1 m KOH. Scan rate:50mVs À1 .F)ORR polarization curves of pristine graphite, C 60 ,a nd graphene-C 60 nanohybrids in 0.1 m KOH at 1600 rpm.…”

“…[39][40][41][42] Theh ybridization of fullerenes with LD na-nomaterials,s uch as quantum dots, nanoparticles,g raphene,a nd graphitic carbon nitride (g-C 3 N 4 )n anosheets,t o fabricate highly active (photo)electrocatalytic systems has notably sparked the interest of both the materials science and the catalysis communities.F ullerene-based LD hybrids have emerged as highly efficient metal-free energy conversion systems as well as potentially inexpensive alternatives to replace Pt and compete with state-of-the-art (photo)electrocatalysts,o ffering ac ombination of low cost, high activity,a nd superior stability. [43][44][45][46] Thec atalytic properties of the resulting nanohybrids are governed by their electronic structures.T he Sabatier principle states that the interactions of the reactant and intermediate species with the catalytically active surfaces should be driven by moderate energy adsorption values instead of strong or weak interfacial interactions.A ccording to this rule,the electronic behavior at the molecular level and, thus,the catalytic activity of the resulting fullerene-based LD heterostructures can be effectively tuned by engineering the morphology,composition, defect density,and strain. Accordingly,t he electrocatalytic and (photo)electrocatalytic performances of fullerene-based LD materials can be modulated by changing the density of fullerenes in the nanostructured framework, the dimensionality of the nanomaterial tied to the fullerene,a nd/or the number of defects on the resulting composites.F or instance,t he rational design of 0D-2D heterostructures composed of C 60 adsorbed onto singlewalled carbon nanotubes through van der Waals (vdW) interactions has been elegantly used to fabricate metal-free Anemerging class of heterostructures with unprecedented (photo)electrocatalytic behavior,involving the combination of fullerenes and low-dimensional (LD) nanohybrids,iscurrently expanding the field of energy materials.The unique physical and chemical properties of fullerenes have offered new opportunities to tailor both the electronic structures and the catalytic activities of the nanohybrid structures.…”

N, S and Transition-Metal Co-Doped Graphene Nanocomposites as High-Performance Catalyst for Glucose Oxidation in a Direct Glucose Alkaline Fuel Cell

“…Generally, C S is in the range of 20–60 μF/cm 2 . In this paper, for the catalyst in 0.6 M KOH, the average C S value used according to the literature is 40 μF/cm 2 [ 40 ]. V b is the scan rate.…”

Fullerenes as Key Components for Low‐Dimensional (Photo)electrocatalytic Nanohybrid Materials

“…[41] Wang et al recently reported non-precious electrocatalytic materials by assembling fullerene quantum dots decorated with CoNi layered nanosheets onto Ni foam (NF) electrodes (FQD/CoNi-LDH/ NF) through as imple one-pot hydrothermal strategy. [43] The nanohybrid materials exhibited excellent yields for OER with lower overpotentials at ac urrent density of 50, 100, and 200 mA cm À2 than both their components and commercial IrO 2 deposited on NF (Figure 11 A). Additionally,t he nanoheterostructures delivered superior HER catalytic activity compared with their components (Figure 11 B), exhibiting lower Gibbs free energies for hydrogen absorption.…”