ИСТИНА

Carbon structured nanomaterials can be applied in the various modern technologies: as adsorbents, catalyst supports, electrode materials, etc. Nevertheless, it is sufficiently hampered by its low bulk density. There are several ways to improve this situation. High-molecular-weight plasticizer can be added, but it lead to the loss of surface area; co-polymerization change physical and chemical characteristics of products; filtration or wet pressing gain mechanically non-stable substrates. The only technique, which may preserve electrical conductivity, surface area, micro and mesoporosity, what is highly important when used in energy storage devices, is spark plasma sintering (SPS). This method is widely applied in synthesis of ceramics, metals and started to be used for carbon materials [1]. Multiwalled carbon nanotubes and carbon nanoshells (can be represented also as defect few layer graphene fragments), their nitrogen substitutes analogs as well as fictionalized ones were sintered and tested referred to nitrogen and organic vapours adsorption, chemical composition, structural characteristics. It was shown that SPS in all the cases gain highly conductive pellets with density up to 1.8 g/cm3, with small amount of functional groups. It keeps certain types of heteroatoms within the graphene sheets and avoid gramatical change of meso and microporosity.