Abstract
Few-layer graphene nanosheets were produced by pulsed discharge in graphite micro-flake suspension at room temperature. In this study, the discharging current and voltage data were recorded for the analysis of the pulsed discharge processes. The as-prepared samples were recovered and characterized by various techniques, such as TEM, SEM, Raman, XRD, XPS, FT-IR, etc. The presence of few-layer graphene (3–9 L) in micrometer scale was confirmed. In addition, it is investigated that the size of recovered graphene nanosheets are influenced by the initial size of utilized graphite micro-flake powder. Based on the process of pulsed discharge and our experimental results, the formation mechanism of few-layer graphene was discussed. The influence of charging voltage on as-prepared samples is also investigated.
Highlights
IntroductionGraphene is the first prepared two-dimensional material with a structure of single graphitic layer
Graphene is the first prepared two-dimensional material with a structure of single graphitic layer.Since Novoselov et al [1] obtained monolayer graphene in millimeter-scale by mechanical exfoliation method with a tape in 2004, the synthesis and characterization of graphene materials have been an interest of many research groups
We demonstrate a one-step route to prepare few-layer graphene using pulsed discharge in graphite micro-flake suspension at room temperature
Summary
Graphene is the first prepared two-dimensional material with a structure of single graphitic layer. Since Novoselov et al [1] obtained monolayer graphene in millimeter-scale by mechanical exfoliation method with a tape in 2004, the synthesis and characterization of graphene materials have been an interest of many research groups. Electronic, thermal and mechanical properties of graphene were reported. In 2006, it was reported that, owing to the zigzag-shaped edge of graphene nano-ribbons, in-plane homogeneous electric fields can be loaded to control their magnetic properties and spin-polarized electronic state [2]. Graphene has been utilized to design and assemble multiple functional materials with excellent mechanical properties [3,4,5]. A significant amount of studies suggest the high potential applications of graphene materials in batteries, electronic devices, functional composite materials, etc. A significant amount of studies suggest the high potential applications of graphene materials in batteries, electronic devices, functional composite materials, etc. [6,7,8]
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