Pseudocapacitive properties of electrochemically prepared vanadium oxide on carbon nanotube film substrate

Il Hwan Kim, Jae Hong Kim, Byung Won Cho, Kwang Bum Kim

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

Vanadium oxide (V2 O5 x H2 O) was electrodeposited on a carbon nanotube (CNT) film substrate with a three-dimensional porous structure at the nanometer scale as an electrode material for pseudocapacitors using organic electrolytes. Microstructures of the electrochemically prepared V2 O5 x H2 O on the CNT film substrate (V2 O5 x H2 O /CNT film electrode) showed that V2 O5 x H2 O was heterogeneously nucleated and uniformly deposited on the CNT film substrate. The V2 O5 x H2 O /CNT film electrode showed not only a high specific Li-ion capacitance of 1230 Fg with respect to the mass of the V2 O5 x H2 O, but also a high rate capability. The maximum specific energy of 851 Whkg and specific power of 125 kWkg were obtained from the discharging curves of the V2 O5 x H2 O /CNT film electrode. They could be attributed to the electrode construction comprising a very thin film of V2 O5 x H2 O deposited on the conductive CNT film substrate with a three-dimensional nanoporous structure.

Original languageEnglish
Article number008608JES
Pages (from-to)A1451-A1458
JournalJournal of the Electrochemical Society
Volume153
Issue number8
DOIs
Publication statusPublished - 2006 Aug 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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