Investigation on V(IV)/V(V) species in a vanadium redox flow battery

Gaku Oriji, Yasushi Katayama, Takashi Miura

Research output: Contribution to journalArticlepeer-review

172 Citations (Scopus)


Stokes radii of V(IV) and V(V) species in concentrated sulfuric acid solutions were determined from their diffusion limited current densities on a rotating platinum disk electrode and the solution viscosity. In addition, V(IV) and V(V) species were estimated based on their solubility, UV-Vis spectra, and cyclic voltammetric data. The possible ion-pair formation of V(IV) cation with SO42- and/or HSO4- and the spontaneous polymerization of V(V) at a low H2SO4 concentration were discussed.

Original languageEnglish
Pages (from-to)3091-3095
Number of pages5
JournalElectrochimica Acta
Issue number19
Publication statusPublished - 2004 Aug 15


  • Complex formation with SOor HSO
  • Dissolved state
  • Ion pair
  • Polymeric form
  • Stokes radius
  • Vanadium redox flow battery

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry


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