Preparation, thermodynamic and electrochemical properties of vanadium solution

Xiong Wei Wu, Sui Peng, Bi Jun Feng, Tomoo Yamamura, Takashi Yano, Satoh Isamu, Su Qin Liu, Ke Long Huang

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The vanadium solution was prepared by the mixture of hydrogen peroxide and vanadium pentoxide in sulphuric acid solution. The solubility mechanism of vanadium pentoxide was investigated. The valence and concentration change of vanadium solution were characterized by UV-Vis and ICP measurement in the following electrolysis procedure. ΔH and ΔG of the reaction were calculated. The results showed that the reaction was exothermic. The electrochemical activity was characterized by the charging and discharging experiment. And the results showed that the high current efficiency, voltage efficiency and energy efficiency of 93.6%, 98.1% and 91.9% were obtained at the current density of 2.4 mA/cm2, respectively. This indicated that the prepared vanadium solution was suitable for vanadium redox-flow battery.

Original languageEnglish
Pages (from-to)535-539
Number of pages5
JournalWuji Cailiao Xuebao/Journal of Inorganic Materials
Volume26
Issue number5
DOIs
Publication statusPublished - 2011 May 1

Keywords

  • Redox-flow battery
  • Thermodynamic
  • Vanadium solution

ASJC Scopus subject areas

  • Materials Science(all)
  • Inorganic Chemistry

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  • Cite this

    Wu, X. W., Peng, S., Feng, B. J., Yamamura, T., Yano, T., Isamu, S., Liu, S. Q., & Huang, K. L. (2011). Preparation, thermodynamic and electrochemical properties of vanadium solution. Wuji Cailiao Xuebao/Journal of Inorganic Materials, 26(5), 535-539. https://doi.org/10.3724/SP.J.1077.2011.00535