NOVELTY - A redox flow battery comprises an anode comprising a stack of flow cells within which a first liquid containing a reduced polyoxometalate electron-ferrying compound is oxidized to generate an electrical current emitted from the anode and a second liquid containing an oxidized polyoxometalate electron-ferrying compound, an osmotic water-recover subsystem in which water is removed from the second liquid and fuel is mixed into the second liquid to produce a third concentrated liquid containing both the oxidized polyoxometalate electron- ferrying compound and fuel, and a recharging subsystem.    USE - Redox flow battery for use in variety of power applications such as portable electronics that is utilized in military and commercial applications and large power modules.    ADVANTAGE - The battery has compact, lightweight, improved durability and capacity.    DETAILED DESCRIPTION - A redox flow battery comprises an anode comprising a stack of flow cells within which a first liquid containing a reduced polyoxometalate electron-ferrying compound is oxidized to generate an electrical current emitted from the anode and a second liquid containing an oxidized polyoxometalate electron-ferrying compound, an osmotic water-recover subsystem in which water is removed from the second liquid and fuel is mixed into the second liquid to produce a third concentrated liquid containing both the oxidized polyoxometalate electron- ferrying compound and fuel, and a recharging subsystem in which the oxidized polyoxometalate electron-ferrying compound in the third liquid is reduced and the fuel in the third liquid is oxidized to generate a fourth liquid containing the reduced polyoxometalate electron-ferrying compound, dissolved carbon dioxide, and carbon-dioxide vapor.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of an envisioned POM-based flow cell system.    Flow cell stack (602)    Gas removal unit (604)    Osmosis water recovery unit (606)    pump (608, 609)    Excess POM reservoir (612)    Cartridge (614)