NOVELTY - Electrode comprises: a solvent having metal ions and oxygen dissolved in it, where the metal ions are alkali metal ions, alkali earth metal ions, or lanthanide metal ions; a fluorinated or metalloprotein oxygen dissolution enhancer provided in the solvent for enhancing dissolution of the oxygen in the solvent; a metal oxide dissolution enhancer provided in the solvent for enhancing dissolution of metal oxide formed via reaction of the oxygen with the metal ions in the solvent; and a current collector provided in electrical contact with the solvent.    USE - The electrode is useful in: an electrochemical generator; for generating an electrical current; for charging an electrochemical generator; and for discharging and refueling the electrochemical generator (all claimed), where the electrochemical generators include primary and secondary batteries, or fuel cells.    ADVANTAGE - The electrode: exhibits high performance; enables an increased oxidation and/or reduction rate and enhances the stability and efficiency of the electrochemical generators; is highly versatile and compatible with a wide range of solid state and liquid anode and cathode, and electrolyte systems; is capable of effective replenishing and/or regeneration, and hence enables an innovative class of electrochemical systems capable of efficient recharging and/or electrochemical cycling; and enables electrochemical generators for combining high energy density and enhanced safety with respect to conventional lithium ion battery technology.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) an electrochemical generator comprising: a positive electrode containing the solvent having metal ions and oxygen dissolved in it, the fluorinated or metalloprotein oxygen dissolution enhancer provided in the solvent, the metal oxide dissolution enhancer provided in the solvent, and a current collector provided in electrical contact with the solvent; a negative electrode containing an active negative electrode material; and a separator provided between the negative electrode and the positive electrode, where the separator conducts metal ions as a charge carrier in the electrochemical generator;    (2) an electrochemical generator comprising: the positive electrode containing a first solvent having electron donor metal ions and oxygen dissolved in it, where the electron donor metal ions are alkali metal ions, alkali earth metal ions, and/or lanthanide metal ions, a fluorinated or metalloprotein oxygen dissolution enhancer provided in the first solvent for enhancing dissolution of the oxygen in the first solvent, a metal oxide dissolution enhancer provided in the first solvent for enhancing dissolution of electron donor metal oxide formed via reaction of the oxygen with the electron donor metal ions in the first solvent, and a current collector provided in electrical contact with the first solvent; a negative soluble electrode containing an electron donor comprising an electron donor metal provided in a second solvent, where the electron donor metal is an alkali metal, an alkali earth metal, or a lanthanide metal or its alloy, an electron acceptor provided in the second solvent, where the electron acceptor is a polycyclic aromatic hydrocarbon or an organo radical, a supporting electrolyte comprising a metal at least partially dissolved in the second solvent and a current collector provided in contact with the second solvent, where at least a portion of the electron donor comprising an electron donor metal is dissolved in the second solvent, hence generating electron donor metal ions and solvated electrons in the second solvent; and a separator provided between the negative soluble electrode and the positive electrode, where the separator is non-liquid and conducts the electron donor metal ions as a charge carrier in the electrochemical generator;    (3) an electrochemical generator comprising: the positive electrode containing a first solvent having metal ions and oxygen dissolved in it, where the metal ions are lithium ions or sodium ions, the fluorinated or metalloprotein oxygen dissolution enhancer, the metal oxide dissolution enhancer for enhancing dissolution of lithium oxide or sodium oxide formed via reaction of the oxygen with the lithium ions or sodium ions, respectively, in the first solvent, and the current collector; a negative soluble electrode containing the electron donor comprising an electron donor metal including lithium or sodium, respectively, the electron acceptor including a polycyclic aromatic hydrocarbon, the supporting electrolyte and the current collector, where at least a portion of the electron donor comprising an electron donor metal is dissolved in the second solvent, hence generating lithium ions or sodium ions, respectively, and solvated electrons in the second solvent; and the separator provided between the negative soluble electrode and the positive electrode, where the separator is non-liquid and conducts the lithium ions or sodium ions, respectively, as a charge carrier in the electrochemical generator;    (4) an electrochemical generator comprising: the positive electrode containing the first solvent having electron donor metal ions and oxygen dissolved in it, the fluorinated or metalloprotein oxygen dissolution enhancer including a fluorinated ether, a fluorinated ester, a fluorinated carbonate and/or a fluorinated polymer, the metal oxide dissolution enhancer and the current collector; the negative soluble electrode; and the separator provided between the negative soluble electrode and the positive electrode;    (5) generating an electrical current, comprising: providing the electrochemical generator; and discharging the electrochemical generator;    (6) charging an electrochemical generator; and    (7) discharging and refueling the electrochemical generator, comprising: providing the electrochemical generator; discharging the electrochemical generator, hence generating a discharged electrochemical generator; removing substantially all of the electron donor metal, electron acceptor and the second solvent from the soluble negative electrode from the discharged electrochemical generator; providing the electron donor metal, electron acceptor and the second solvent to the soluble negative electrode to the discharged electrochemical generator; removing substantially all of the first solvent, fluorinated or metalloprotein oxygen dissolution enhancer, and the metal oxide dissolution enhancer from the positive electrode from the discharged electrochemical generator; and providing the first solvent, fluorinated or metalloprotein oxygen dissolution enhancer and metal oxide dissolution enhancer to the positive electrode to the discharged electrochemical generator, hence refueling the electrochemical generator.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic diagram of a regenerative flow cell.    Liquid anode (10)    Liquid anode reservoir (14)    Liquid anode regeneration tank (16)    Cathode (20)    Separator membrane (30)