Graphene nanosheets has recently opened up an exciting new field in the science and technology of two-dimensional (2D) nanomaterials with continuously growing academic and technological impetus. GN exhibits unique electronic, optical, magnetic, thermal and mechanical properties arising from its strictly 2D structure and thus has many important technical applications. Actually, GN-based materials have enormous potential to rival or even surpass the performance of carbon nanotube-based counterparts, given that cheap, large-scale production and processing methods for high-quality GN become available. Therefore, the studies on GN in the aspects of chemistry, physical, materials, biology and interdisciplinary science have been in full flow in the past five years. In this critical review, from the viewpoint of chemistry and materials, we will cover recent significant advances in synthesis, molecular engineering, thin film, hybrids, and energy and analytical applications of the "star-material" GN together with discussion on its major challenges and opportunities for future GN research ( 315 references).
Graphite film is composed of a single layer of carbon atoms tilting, then only one atom thick, with a high electrical conductivity. First made in 2004, only the adhesion of the other materials used. Now scientists have successfully used the framework of the gold nanorods system, it made a film. Recently, in the graphite film found a lot of surprising and interesting electronic transport phenomena.
The lithium storage properties of graphene nanosheet (GNS) materials as high capacity anode materials for rechargeable lithium secondary batteries (LIB) were investigated. Graphite is a practical anode material used for LIB, because of its capability for reversible lithium ion intercalation in the layered crystals , and the structural similarities of GNS to graphite may provide another type of intercalation anode compound. While the accommodation of lithium in these layered compounds is influenced by the layer spacing between the Graphene nanosheets, control of the intergraphene sheet distance through interacting molecules such as carbon nanotubes (CNT) or fullerenes (C60) might be crucial for enhancement of the storage capacity. The specific capacity of GNS was found to be 540 mAh / g, which is much larger than that of graphite, and this was increased up to 730 mAh / g and 784 mAh / g, respectively, by the incorporation of macromolecules of CNT and C60 to the GNS.
Graphite films in electronic devices has great prospect. U.S. scientists Watt, British researchers at the University of Manchester and the German Max Planck Institute researchers have produced a graphite film transistors. Graphite crystal silicon wafers with greater than the advantages. This transistor is not only very small, low cost, and for opening and closing of the voltage is very low, and therefore very sensitive to higher performance, faster, lower power consumption. Past attempts to create single-electron transistors are mostly using standard semiconductor materials, need to be cooled to near absolute zero in order to use, and graphite single-electron transistors can operate at room temperature work. And graphite transistor can be easily designed into the desired shapes. Therefore, be regarded as a substitute for the current chip transistors.
Graphite film is composed of a single layer of carbon atoms tilting, then only one atom thick, with a high electrical conductivity. First made in 2004, only the adhesion of the other materials used. Now scientists have successfully used the framework of the gold nanorods system, it made a film. Recently, in the graphite film found a lot of surprising and interesting electronic transport phenomena.
The lithium storage properties of graphene nanosheet (GNS) materials as high capacity anode materials for rechargeable lithium secondary batteries (LIB) were investigated. Graphite is a practical anode material used for LIB, because of its capability for reversible lithium ion intercalation in the layered crystals , and the structural similarities of GNS to graphite may provide another type of intercalation anode compound. While the accommodation of lithium in these layered compounds is influenced by the layer spacing between the Graphene nanosheets, control of the intergraphene sheet distance through interacting molecules such as carbon nanotubes (CNT) or fullerenes (C60) might be crucial for enhancement of the storage capacity. The specific capacity of GNS was found to be 540 mAh / g, which is much larger than that of graphite, and this was increased up to 730 mAh / g and 784 mAh / g, respectively, by the incorporation of macromolecules of CNT and C60 to the GNS.
Graphite films in electronic devices has great prospect. U.S. scientists Watt, British researchers at the University of Manchester and the German Max Planck Institute researchers have produced a graphite film transistors. Graphite crystal silicon wafers with greater than the advantages. This transistor is not only very small, low cost, and for opening and closing of the voltage is very low, and therefore very sensitive to higher performance, faster, lower power consumption. Past attempts to create single-electron transistors are mostly using standard semiconductor materials, need to be cooled to near absolute zero in order to use, and graphite single-electron transistors can operate at room temperature work. And graphite transistor can be easily designed into the desired shapes. Therefore, be regarded as a substitute for the current chip transistors.
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