fig5
![Zn-based batteries for energy storage](https://image.oaes.cc/392baeab-768a-45c5-9666-b01e7da42134/5398.fig.5.jpg)
Figure 5. (A) Redox couples commonly adapted in flow batteries and corresponding standard reduction potentials; (B) schematic illustration of the charging and discharging mechanisms in alkaline Zn-I2 flow batteries; (C) specific capacity and energy density at different current densities of alkaline Zn-I2 flow batteries[85]. Reproduced with permission from Ref.[85]. Copyright 2018 Royal Society of Chemistry.