Batteries, Vol. 7, Pages 87: Temperature-Induced Precipitation of V2O5 in V (symbol) Flow Batteries& mdash; Revisited
Batteries doi: 10. 3390/batteries7040087
Authors: Emil Holm Kirk Filippo Fenini Sara Noriega Oreiro Anders Bentien
The maximum operation temperature of the vanadium solution in vanadium flow batteries is usually typically limited to 40 & amp; deg; C in order to prevent the damaging thermal precipitation of V2O5. For that reason, the operation of batteries at high ambient temperature ranges is an important aspect to tackle for fixed storage. In the existing work, a comprehensive study of the high heat range stability of redox options for vanadium flow batteries was performed. In specific, focus was put on a comparison between batch and in operando precipitation experiments. It had been found that, despite as being a widely used method in the literature, caution need to be taken when evaluating the precipitation through capability fade due to the large influence of exterior oxidation and cycling guidelines, plausibly leading to a good incorrect interpretation of the particular results. The in operando experiments consistently show the precipitation temperature almost 10& amp; ndash; 20 & amp; deg; C increased than in the batch tests at a 100 percent state of charge meant for the same time lapse.