Performance of a vanadium redox flow battery with a VANADion membrane

X. L. Zhou, T. S. Zhao, Liang An, Y. K. Zeng, X. B. Zhu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

52 Citations (Scopus)

Abstract

In this work, we report a commercial membrane (VANADion), consisting of a porous layer and a dense Nafion layer, as a promising alternative to Nafion 115. In the dual-layer structure, the porous layer (∼210 μm) can offer a high ionic conductivity and the dense Nafion layer (∼20 μm) can depress the convective flow of electrolyte through the membrane. By comparing with the conventional Nafion 115 in a VRFB, it is found that the change from the conventional Nafion 115 to the composite one results in an increase in the energy efficiency from 71.3% to 76.2% and an increase in the electrolyte utilization from 54.1% to 68.4% at a current density of as high as 240 mA cm−2. In addition, although two batteries show the comparable cycling performance at current densities ranging from 80 mA cm−2to 240 mA cm−2, the composite membrane is estimated to be significantly cheaper than the conventional Nafion 115 due to the fact that the porous layer is rather cost-effective and the dense Nafion layer is rather thin. The impressive combination of desirable performance and low cost makes this composite membrane highly promising in the VRFB applications.
Original languageEnglish
Pages (from-to)353-359
Number of pages7
JournalApplied Energy
Volume180
DOIs
Publication statusPublished - 15 Oct 2016
Externally publishedYes

Keywords

  • Energy storage
  • Flow battery
  • Performance evaluation
  • VANADion

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

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