Facile Preparation of One-Dimensional Wrapping Structure: Graphene Nanoscroll-Wrapped of Fe₃O₄ Nanoparticles and Its Application for Lithium-Ion Battery

Abstract

Graphene nanoscroll (GNS) is a spirally wrapped two-dimensional (2D) graphene sheet (GS) with a 1D tubular structure resembling that of a multiwalled carbon nanotube (MWCNT). GNS provide open structure at both ends and interlayer galleries that can be easily intercalated and adjusted, which show great potential applications in energy storage. Here we demonstrate a novel and simple strategy for the large-scale preparation of GNSs wrapping Fe3O4 nanoparticles (denoted as Fe3O4@GNSs) from graphene oxide (GO) sheets by cold quenching in liquid nitrogen. When a heated aqueous mixed suspension of GO sheets and Fe3O4 nanoparticles is immersed in liquid nitrogen, the in-situ wrapping of Fe3O4 nanoparticles with GNSs is easily realized. The structural conversion is closely correlated with the initial temperature of mixed suspension, the zeta potential of Fe3O4 nanoparticles and the immersion way. Remarkably, such hybrid structure provides the right combination of electrode properties for high-performance lithium-ion batteries. Compared with other wrapping structure, such 1D wrapping structure (GNSs wrapping) effectively limits the volume expansion of Fe3O4 nanoparticles during the cycling process, consequently, a high reversible capacity, good rate capability, and excellent cyclic stability are achieved with the material as anode for lithium storage. The results presented here may pave a way for the large-scale preparation of GNS-based materials in electrochemical energy storage applications.

Sandwich-like mesoporous graphene@magnetite@carbon nanosheets for high-rate lithium ion batteries

“…1A. This phenomenon can be attributed to insufficient amount of graphene and relatively low diffraction intensity of graphene according to literature [25,37]. The Raman spectra of the GS@Fe 3 O 4 @C sample confirm the presence of carbon and graphene in the products [5].…”

Modeling and Simulation of Graphene Based Polymer Nanocomposites: Advances in the Last Decade

“… The individual layers of graphene, under external loadings and thermal stresses, undergo out-of-plane wrapping [80] GBPNCs [124]. To avoid such failures, minimum length scale and adhesion energy are necessary to avoid delamination under compressive forces [124].…”

“…Graphene has shown inclination for stable folding and bending energy at folds is compensated by intersheet adhesion (Van der Waals interactions) [78] [79]. The individual layers of graphene, under external loadings and thermal stresses, undergo out-ofplane wrapping [80] [81], rippling [82] [83], folding [84] [85], scrolling [86] [87], and crumpling [88] [89], making graphene suitable to enhance the toughness of polymers. Wang et al showed that wrinkle's wavelength and amplitude are directly proportional to volumetric dimensions of graphene as evident from Equation (27) and eq.…”

Electrochemical properties of iron oxides/carbon nanotubes as anode material for lithium ion batteries

“…Zhao and her co-workers successfully prepared graphene nanoscroll (GNS)-wrapped Fe 3 O 4 nanoparticles. GNSs with open structure at both ends and interlayer galleries can not only function as a structural buffering layer to cushion the strain associated with the volume change during the lithium insertion/extraction process, but also act as a robust network to promote the electronic conduction, leading to a significantly improved electrochemical performance [26].…”