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


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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.

作者简介

Yu. Fedoseeva

Nikolaev Institute of Inorganic Chemistry, Siberian Branch; Novosibirsk National Research State University

编辑信件的主要联系方式.
Email: fedoseeva@niic.nsc.ru
俄罗斯联邦, Novosibirsk; Novosibirsk

K. Popov

Nikolaev Institute of Inorganic Chemistry, Siberian Branch

Email: fedoseeva@niic.nsc.ru
俄罗斯联邦, Novosibirsk

G. Pozdnyakov

Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch

Email: fedoseeva@niic.nsc.ru
俄罗斯联邦, Novosibirsk

V. Yakovlev

Nikolaev Institute of Inorganic Chemistry, Siberian Branch

Email: fedoseeva@niic.nsc.ru
俄罗斯联邦, Novosibirsk

B. Sen’kovskiy

Saint-Petersburg State University; Physikalisches Institut

Email: fedoseeva@niic.nsc.ru
俄罗斯联邦, Saint-Petersburg; Köln

L. Bulusheva

Nikolaev Institute of Inorganic Chemistry, Siberian Branch; Novosibirsk National Research State University

Email: fedoseeva@niic.nsc.ru
俄罗斯联邦, Novosibirsk; Novosibirsk

A. Okotrub

Nikolaev Institute of Inorganic Chemistry, Siberian Branch; Novosibirsk National Research State University

Email: fedoseeva@niic.nsc.ru
俄罗斯联邦, Novosibirsk; Novosibirsk

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