Binder-less activated carbon electrode from gelam wood for use in supercapacitors

Nirwan Syarif, Ivandini A. Tribidasari, Widayanti Wibowo

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

This work focused on the relation between the porous structure of activated carbon and its capacitive properties. Three types of activated carbon monoliths were used as the electrodes in a half cell electrochemical system. One monolith was produced from activated carbon and considered to be a binder-less electrode. Two others were produced from acid and high pressure steam oxidized activated carbon. The micrographs clearly indicate that three electrodes have different porous structures. Both porosity and surface area of carbons increased due to the formation of grains during oxidation. This fact specified that an acid oxidized carbon monolith will have relatively higher capacitance compared to non-oxidized and steam oxidized monoliths. Maximum capacitance values for acid, steam oxidized and non-oxidized electrodes were 27.68, 2.23 and 1.20 F g-1, respectively.

Original languageEnglish
Pages (from-to)37-45
Number of pages9
JournalJournal of Electrochemical Science and Engineering
Volume3
Issue number2
DOIs
Publication statusPublished - 2013

Keywords

  • Capacitance
  • Micropore
  • Pyrolysis
  • Surface oxidation
  • Voltammogram

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