Fig. 7
From: Catalytic production of impurity-free V3.5+ electrolyte for vanadium redox flow batteries

Electrochemical stability of the reactor electrolyte. a Cell performances of the electrolytes prepared by the catalyst reactor and electrolysis under a wider voltage window (0.7–1.9 V). b Self-discharge test for the reactor and electrolysis electrolytes after the charge up to 2.4 V