TY - JOUR

T1 - Structure of carbon nanoparticles synthesized by adiabatic compression of acetylene and their application in supercapacitors

AU - Fedoseeva, Yu V.

AU - Popov, K. M.

AU - Pozdnyakov, G. A.

AU - Yakovlev, V. N.

AU - Sen’kovskiy, B. V.

AU - Bulusheva, L. G.

AU - Okotrub, A. V.

PY - 2017/11/1

Y1 - 2017/11/1

N2 - The work reports the study of the structure of carbon nanoparticles prepared by the pyrolysis of heliumdiluted acetylene under adiabatic compression in a piston reactor. At a pushing gas pressure of 0.5 MPa, 0.7 MPa, and 0.9 MPa the reaction gas was heated to temperatures of 400 °C, 600 °C, and 750 °C. By transmission electron microscopy it is found that carbon nanoparticles have a spherical shape and their size varies from 20 nm to 60 nm. The structural features of carbon nanoparticles are determined from the X-ray photoelectron spectroscopy data and the analysis of the near-edge X-ray absorption fine structure spectroscopy. Carbon nanoparticles prepared at a pushing gas pressure of 0.5 MPa have an amorphous structure and consist of hydrogenated carbon with impurities of polycyclic aromatic fragments. At a stronger compression ratio, carbon nanoparticles with a layered structure consisting mainly of sp2 hybridized carbon atoms are formed. The capacitance behavior and electrochemical impedance of carbon nanoparticle-based supercapacitors are compared.

AB - The work reports the study of the structure of carbon nanoparticles prepared by the pyrolysis of heliumdiluted acetylene under adiabatic compression in a piston reactor. At a pushing gas pressure of 0.5 MPa, 0.7 MPa, and 0.9 MPa the reaction gas was heated to temperatures of 400 °C, 600 °C, and 750 °C. By transmission electron microscopy it is found that carbon nanoparticles have a spherical shape and their size varies from 20 nm to 60 nm. The structural features of carbon nanoparticles are determined from the X-ray photoelectron spectroscopy data and the analysis of the near-edge X-ray absorption fine structure spectroscopy. Carbon nanoparticles prepared at a pushing gas pressure of 0.5 MPa have an amorphous structure and consist of hydrogenated carbon with impurities of polycyclic aromatic fragments. At a stronger compression ratio, carbon nanoparticles with a layered structure consisting mainly of sp2 hybridized carbon atoms are formed. The capacitance behavior and electrochemical impedance of carbon nanoparticle-based supercapacitors are compared.

KW - acetylene pyrolysis

KW - adiabatic compression

KW - carbon nanoparticles

KW - NEXAFS

KW - XPS

KW - STORAGE

KW - NANOTUBES

KW - NANOSTRUCTURES

UR - http://www.scopus.com/inward/record.url?scp=85036581497&partnerID=8YFLogxK

U2 - 10.1134/S002247661706018X

DO - 10.1134/S002247661706018X

M3 - Article

AN - SCOPUS:85036581497

VL - 58

SP - 1196

EP - 1204

JO - Journal of Structural Chemistry

JF - Journal of Structural Chemistry

SN - 0022-4766

IS - 6

ER -