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Vanadium flow battery electrolyte synthesis via chemical reduction of V2O5 in aqueous HCl and H2SO4

Proposed Journal Article, unpublished

Small, Leo J.; Soundappan, Thiagarajan; Laros, James H.; Anderson, Travis M.; Chalamala, Babu C.; Subramanian, Venkat

Here, we report a simple method to synthesize V4+(VO2+) electrolytes as feedstock for all vanadium redox flow batteries (RFB). By dissolving V2O5 in aqueous HCl and subsequently adding glycerol as a reducing agent, we have demonstrated an inexpensive route for electrolyte synthesis to concentrations >2.5 M V4+ (VO2+). Electrochemical analysis and testing of laboratory scale RFB demonstrate improved thermal stability across a wider temperature range (-10-65°C) for V4+(VO2+) electrolytes in HCl compared to in H2SO4 electrolytes.

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TYPE Journal Article YEAR 2016
OSTI
Results 126–137 of 137
Results 126–137 of 137