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A microporous separator (Daramic) was impregnated by soaking in a 5wt.% Nafion solution to obtain a proton conducting composite membrane with modified properties for the vanadium redox flow battery (VRB). Nafion uptake by Daramic with thickness 0.25mm is 6.5wt.%. Infrared spectroscopy (IR), thermogravimetric analysis (TGA) and ion exchange capacity (IEC) have also been carried out to confirm incorporation...
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