Redox flow batteries store energy in the form of chemical compounds. These are present in solution in liquid electrolytes and can be stored outside the cell. In terms of structure and function, a redox flow battery corresponds to a secondary battery/fuel cell hybrid.
These redox flow batteries come in different types:
- Vanadium-vanadium
- Vanadium-bromine
- Vanadium-air
- Polysulfide-bromide
- Zinc-bromine
- Zinc-cerium