fig12
From: Advancements of non-viologen-based anolytes for pH-neutral aqueous organic redox flow batteries
Figure 12. Polysulfide-based AORFBs[60,61]. (A) Redox mechanisms; (B) Battery efficiencies with respect to current density; (C) Cycling capacity and efficiencies with respect to cycle number. Reproduced with permission[60]. Copyright 2015, The Electrochemical Society; (D) CV curves of sulfide/polysulfide in 1.0 M KCl. Scan rate: 50 mV s-1; (E) A photograph of the battery stack employing K3[Fe(CN)6]/K2S; (F) Battery performance of the stack consisting of a 20.0 L 0.2 M K3[Fe(CN)6]+ 1.0 M KCl as catholyte and a 20.0 L 1.0 M K2S+1.0 M KCl as anolyte under 34 A.
