The Effect of Electrochemical and Gas Phase Activation of High Surface Area Carbon Black Ketjen Black EC 600 DJ on Its Surface Composition, Electrochemical Capacitance, and Stability

N. V. Maltseva, V. A. Golovin, Yu O. Chikunova, E. N. Gribov

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The effect of electrochemical and gas-phase activation of high-surface-area carbon black Ketjen Black EC 600 DJ on its stability and electrochemical capacitance is studied. The electrochemical activation is carried out according to the “start–stop” protocol (1–1.5 V, 0.5 V/s). The stability of samples is assessed based on variation of their effective resistance (based on the results of cyclic voltammetry (CVA)) and electrochemical capacitance (based on CVA and galvanostatic data) with the cycle number. The changes in the texture and surface properties of activated samples are studied by the methods of nitrogen low-temperature adsorption and X-ray photoelectron spectroscopy. The gas-phase activation of high-surface-area carbon black Ketjen Black EС 600 DJ is shown to impair its stability, while the electrochemical oxidation of carbonblack samples leads to a considerable (two-fold) increase in their electrochemical capacitance.

Original languageEnglish
Pages (from-to)426-432
Number of pages7
JournalRussian Journal of Electrochemistry
Volume54
Issue number5
DOIs
Publication statusPublished - 1 May 2018

Keywords

  • activated carbon
  • CVA
  • quinone–hydroquinone transitions
  • “start–stop” cycling
  • OXIDE
  • PERFORMANCE
  • MEMBRANE
  • BEHAVIOR
  • PLATINUM
  • PT/C CATALYSTS
  • DEGRADATION
  • ELECTRODE
  • SUPERCAPACITOR
  • quinone-hydroquinone transitions
  • "start-stop" cycling

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