Although the production of activated carbon from rice hulls had a fairly long tradition, but this is the first time the structure of graphene was observed in manufacture of activated carbon from rice husk. Researchers have recognized the emergence of the edge structure with high crystallinity and homogeneous atoms in synthetic materials, although graphene samples are taken in low-temperature environments (850oC). Graphene nano-sized crystals represent single or multi-layer structure with homogeneous edges, while graphene folded (corrugated graphene) consists of several nanometers domain size (200 300 carbon atoms) shows clearly the grain boundary clear. According to the researchers, said the presence of the edge stability and homogeneity may contain unusual physical and chemical properties, which makes it a notable material during fabrication storage devices and energy conversion performance, such as supercapacitors and hydrogen storage, water filtration membranes next generation composites and other nanomaterials. as the researchers said, there is still a some issues to be resolved. First, the processes used (calcified and handling KOH) causing difficulties in assessing the detailed mechanisms of graphene with its unique structure. Second, the production process requires processing to synthesize graphene hydrovit potassium, the researchers are looking for alternative solutions enabled without the use of highly alkaline compounds.
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