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Abstract
To catalyze Cr(III)/Cr(II) redox couple, Bi was used as catlysts. Bi has a remarkable behavior on reduction and oxidation of chromium couple to enhance the performance of Fe-Cr redox flow cell.In this present investigation catalysts carbon felt substrates were used as electrodes on negative side which were electrochemically plated/ loaded with Bi. A bath consisting of 10g / L Bi2(SO4)3 and 800g / L H2SO4 was established by electro-winning method. Felt samples were used as cathodes, and anodes were used as inert graphite plates. To date BiCl3 has been applied as an ingredient in anolyte to the electrolyte. Bi metal was electroplated in this research on carbon felt surfaces that were used as electrodes on the cell's negative side. The carbon felt electrode samples were plated with Bi up to 12mg / cm2 in addition to H2O2 treatment and these were used in the negative (Cr) side of the RFB. Felt samples were used as cathodes, and anodes were used as inert graphite plates.