Journal of Applied Electrochemistry

, Volume 20, Issue 3, pp 463–467

Vanadium redox cell electrolyte optimization studies

  • M. Kazacos
  • M. Cheng
  • M. Skyllas-Kazacos
Papers

DOI: 10.1007/BF01076057

Cite this article as:
Kazacos, M., Cheng, M. & Skyllas-Kazacos, M. J Appl Electrochem (1990) 20: 463. doi:10.1007/BF01076057

Abstract

The stability of the positive electrolyte of the vanadium redox cell has been studied at various temperatures and at different solution compositions and solution state-of-charge (SOC). It has been found that at elevated temperatures for extended periods, V(V) can slowly precipitate from solution, the extent and rate of which being dependent on temperature, vanadium and sulphuric acid concentration as well as the SOC of the electrolyte. A H2SO4 concentration of 3–4m has been found to be more suitable than 2m, not only from the point of view of increased stability, but also because of the higher electrolyte conductivity which leads to increased voltage efficiencies during battery cycling.

Copyright information

© Chapman and Hall Ltd. 1990

Authors and Affiliations

  • M. Kazacos
    • 1
  • M. Cheng
    • 1
  • M. Skyllas-Kazacos
    • 1
  1. 1.School of Chemical Engineering and Industrial ChemistryKensingtonAustralia