ИСТИНА

In the decades flow batteries became one of the most promising technology in the field of large scale energy storage since they provide a possibility to adjust their power-to-energy ratio in the wide range with minimal expenses. In the article [1] it was demonstrated that it is possible to carry out the electroreduction of bromate anions in acidic solution on carbon electrodes due to the presence of bromine trace. In this case, an autocatalytic cycle consists of a heterogeneous reaction on the electrode surface for a reversible redox couple of Br2/Br- and an irreversible homogeneous reaction of the BrO3-/Br2 proportionation. Using of bromates as energy-intensive substances is a promising idea because it allows to increase the energy density of the flow-batteries from tens to hundreds of W*h/kg.