(EP1051766-A1)   NOVELTY - A redox flow battery is composed of a number of cells in electrical series defined by a stacked and repetitive arrangement of a conductive inter-cell separator having a generally bipolar function, a positive electrode, an ion exchange membrane, a negative electrode and another conductive inter-cell separator.    USE - Renewable electrochemical energy storage by redox flow battery systems, particularly vanadium redox secondary batteries.    ADVANTAGE - By-pass currents are substantially eliminated, resulting in increased faradic efficiency. The energy storing capacity can be 50% in excess of that possible according to prior art for the same amount of vanadium employed.    (CN1284208-A)   NOVELTY - A redox flow battery is composed of a number of cells in electrical series defined by a stacked and repetitive arrangement of a conductive inter-cell separator having a generally bipolar function, a positive electrode, an ion exchange membrane, a negative electrode and another conductive inter-cell separator.    USE - Renewable electrochemical energy storage by redox flow battery systems, particularly vanadium redox secondary batteries.    ADVANTAGE - By-pass currents are substantially eliminated, resulting in increased faradic efficiency. The energy storing capacity can be 50% in excess of that possible according to prior art for the same amount of vanadium employed.    (EP1051766-B1)   NOVELTY - A redox flow battery is composed of a number of cells in electrical series defined by a stacked and repetitive arrangement of a conductive inter-cell separator having a generally bipolar function, a positive electrode, an ion exchange membrane, a negative electrode and another conductive inter-cell separator.    USE - Renewable electrochemical energy storage by redox flow battery systems, particularly vanadium redox secondary batteries.    ADVANTAGE - By-pass currents are substantially eliminated, resulting in increased faradic efficiency. The energy storing capacity can be 50% in excess of that possible according to prior art for the same amount of vanadium employed.