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Composites Based on Polyaniline and Activated IR-Pyrolyzed Polyacrylonitrile As Promising Supercapacitor Electrode Materials

Authors
  • Abalyaeva, V. V.1
  • Nikolaeva, G. V.1
  • Efimov, M. N.2
  • Efimov, O. N.1
  • Dremova, N. N.1
  • Karpacheva, G. P.2
  • Muratov, D. G.2
  • 1 Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia , Moscow oblast (Russia)
  • 2 Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii pr. 29, Moscow, 119991, Russia , Moscow (Russia)
Type
Published Article
Journal
Russian Journal of Applied Chemistry
Publisher
Pleiades Publishing
Publication Date
Nov 01, 2020
Volume
93
Issue
11
Pages
1667–1674
Identifiers
DOI: 10.1134/S1070427220110063
Source
Springer Nature
Keywords
License
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Abstract

AbstractA method has been developed for synthesis of a composite coating based on polyaniline by introducing dispersed IR-pyrolyzed polyacrylonitrile, activated by alkaline treatment, into a polymer matrix. The coating is applied from a suspension in formic acid onto a graphite foil that has been previously subjected to anodic etching to improve the wettability with an electrolyte. The produced composite electrodes for sulfuric acid supercapacitors demonstrate high stability during long-term cycling. The specific electrochemical capacitance was 0.89 F cm–2, which is more than 2 times higher than that for an electrode with a polyaniline coating (0.41 F cm–2) tested under the same conditions. The main contribution to the increase in the total capacitance is made by the double-layer capacitance due to the rise in the active electrode surface.

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