Reactive laser synthesis of nitrogen-doped hybrid graphene-based electrodes for energy storage

Abstract

A reactive inverse matrix assisted pulsed laser evaporation method was used for the fabrication of hybrid graphene-based electrodes for supercapacitors.

Enhanced UV-Vis Photodegradation of Nanocomposite Reduced Graphene Oxide/Ferrite Nanofiber Films Prepared by Laser-Assisted Evaporation

“…The high-resolution C1s peak of the GO precursor, reported elsewhere [32,72,73], shows a large content of oxygen functional groups. At binding energies of 284.5 and 284.8 eV, we can respectively find the peaks associated to sp 2 graphitic carbon bonds (C=C), adventitious carbon and sp 3 bonded carbon (C-C, C-H).…”

“…The versatility, speed and non-toxicity of the proposed method provides a new approach for the fabrication of nanocomposite films containing rGO and inorganic nano-entities. MAPLE has been used in previous works to deposit rGO films/inorganic nanoparticles hybrid layers [28][29][30][31][32]. In this work, we explored a similar approach, but using nanofibers produced by electrospinning instead of commercial particles.…”

Enhancement of the supercapacitive properties of laser deposited graphene-based electrodes through carbon nanotube loading and nitrogen doping

“…The UV pulsed laser irradiation of the frozen MAPLE targets leads to the prompt heating of the carbon and NiO nanostructures, leading to the explosive boiling of the surrounding water ice and the deposition of the nanostructures on the facing substrate. 38 The obtained films, about a few micrometres thick, present homogeneous black colour and remain adherent to the substrate after bending. Hereafter, the samples composed by GO-CNT-NiO will be referred to as (wt% GO/wt% MWCNT/wt% NiO) for identifying the relative concentrations of the different components used in the corresponding MAPLE target.…”

“…36,37 In particular, the reactive inverse MAPLE (RIMAPLE) method was able to accomplish the simultaneous chemical conversion and deposition of the irradiated nanomaterials, allowing the fabrication of functional NiO-coated nitrogen-doped rGO-based SC electrodes. 38,39 In these studies, the composites containing NiO nanostructures exhibited higher stability than those not containing NiO layers, though lower volumetric capacitance probably due to differences in compactness of the films.…”

“…Further dispersions were obtained by adding nitrogen-containing molecules (ammonia, urea and melamine from Sigma-Aldrich) which have been previously proven to provoke laser-induced chemical reactivity and nitrogen doping. 38 The concentration of ammonia and urea was set to 2 M, whereas the melamine concentration was 0.3 M for avoiding precipitation. Next, the dispersions were stirred and sonicated during 20 min at room temperature for good homogeneity and low aggregation.…”