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Title: Nanoscale carbon materials from hydrocarbons pyrolysis: Structure, chemical behavior, utilisation for non-aqueous supercapacitors

Highlights: • N-doped and regular carbon nanomaterials were obtained by pyrolitic technique. • Dynamic vapor sorption of different solvents reveals smaller S{sub BET} values. • Steric hindrance and specific chemical interactions are the reasons for this. • Nitrogen doping leads to raise of capacitance and coulombic efficiency with non-aqueous N-containing electrolyte. - Abstract: This work systematically studies adsorption properties of carbon nanomaterials that are synthesized through hydrocarbons that is a powerful technique to fabricate different kinds of carbon materials, e.g., nanotubes, nanoshells, onions, including nitrogen substituted. The adsorption properties of the as-synthesized carbons are achieved by low temperature nitrogen adsorption and organic vapors sorption. Heptane, acetonitrile, water, ethanol, benzene and 1-methylimidazole, which are of great importance for development of supercapacitors, are used as substrates. It is discovered that while nitrogen adsorption reveals a high specific surface area, this parameter for most of organic compounds is rather small depending not only on the size of its molecule but also on chemical interactions for a pair adsorbent–adsorbate. The experimental values of heat of adsorption for carbon and N-substituted structures, when Coulomb cross-coupling of nitrogen atoms in adsorbent and adsorbate takes place, confirms this supposition.
Authors:
 [1] ; ; ;  [1] ;  [2] ;  [3] ;  [4] ;  [1]
  1. Lomonosov Moscow State University, Chemistry Department (Russian Federation)
  2. D. Mendeleyev University of Chemical Technology of Russia (Russian Federation)
  3. Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology (China)
  4. Lomonosov Moscow State University, Faculty of Fundamental Physical and Chemical Engineering (Russian Federation)
Publication Date:
OSTI Identifier:
22475864
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 69; Conference: ISFM 2014: 6. international symposium on functional materials, Singapore (Singapore), 4-7 Aug 2014; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ACETONITRILE; ADSORBENTS; ADSORPTION; BENZENE; CAPACITANCE; CAPACITIVE ENERGY STORAGE EQUIPMENT; CARBON; DOPED MATERIALS; ELECTROLYTES; HEPTANE; INTERACTIONS; NANOMATERIALS; NANOTUBES; NITROGEN; PHOTOELECTRON SPECTROSCOPY; PYROLYSIS; SPECIFIC HEAT; SPECIFIC SURFACE AREA; SURFACE PROPERTIES