Characterization of Commercial Membranes for Non-aqueous Vanadium Redox Flow Battery

비수계 바나듐 레독스 흐름 전지를 위한 상용 멤브레인의 특성분석

  • Received : 2013.06.14
  • Accepted : 2013.08.02
  • Published : 2013.10.01


Membrane characterization methods for aqueous redox flow batteries aqueous RFBs were modified for non-aqueous RFBs. The modified characterization methods, such as ion exchange capacity, transport number, permeability and single cell test, were carried out to evaluate commercial membranes in non-aqueous electrolyte. It was found that columbic efficiency and energy efficiency in a single cell test were dependent on the ion selectivity of commercial anion exchange membranes. Neosepta AHA anion exchange membrane showed the anion transport number of 0.81, which is a relatively low ion selectivity in non-aqueous electrolyte, however, exhibited 92% of coulombic efficiency and 86% of energy efficiency in a single cell test. It was also found that a porous membrane without ion selectivity is suitable for a non-aqueous redox flow battery at a high current density.


Non-aqueous Vanadium Redox Flow Battery;Commercial Membrane;Single Cell Test;Ion Selectivity;Ionic Conductivity


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