Electrochemical characterization of electrochemically prepared ruthenium oxide/carbon nanotube electrode for supercapacitor application

Il Hwan Kim, Jae Hong Kim, Kwang Bum Kim

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Abstract

Ruthenium oxide was electrochemically prepared onto a carbon nanotube (CNT) film substrate with a three-dimensional nano-porous structure in order to improve the specific capacitance and high-rate capability of ruthenium oxide, a promising electroactive material for supercapacitors. A very thin and uniform deposition of ruthenium oxide on the CNT film substrate was obtained by the potential cycling method. Electrochemical properties such as the specific capacitance and high-rate capability were studied by cyclic voltammetry. The electrochemically prepared ruthenium oxide onto the CNT film substrate showed both a very high specific capacitance of 1170 F/g and a high rate capability.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume8
Issue number7
DOIs
Publication statusPublished - 2005 Aug 16

Fingerprint

Carbon Nanotubes
Ruthenium
electrochemical capacitors
Oxides
ruthenium
Carbon nanotubes
carbon nanotubes
Electrodes
Capacitance
electrodes
oxides
capacitance
Substrates
Electrochemical properties
Cyclic voltammetry
cycles
Supercapacitor

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

Cite this

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AB - Ruthenium oxide was electrochemically prepared onto a carbon nanotube (CNT) film substrate with a three-dimensional nano-porous structure in order to improve the specific capacitance and high-rate capability of ruthenium oxide, a promising electroactive material for supercapacitors. A very thin and uniform deposition of ruthenium oxide on the CNT film substrate was obtained by the potential cycling method. Electrochemical properties such as the specific capacitance and high-rate capability were studied by cyclic voltammetry. The electrochemically prepared ruthenium oxide onto the CNT film substrate showed both a very high specific capacitance of 1170 F/g and a high rate capability.

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