NOVELTY - An electrochemical device comprises two electrodes including cathode (100) and anode (102); and electrolyte (104) arranged to conduct an ionic current from a first electrolyte surface in contact with one of the electrodes to a second electrolyte surface in contact with another of the electrodes, where at least one of the electrodes includes an electrochemically active fluid layer having fluid properties that permit at least a portion of it to cling to smooth solid support by a surface energy effect, surface of electrochemically active fluid layer being in contact with the electrolyte.    USE - As electrochemical device (claimed) e.g. battery, used in electric vehicles and power generation.    ADVANTAGE - The electrochemical device includes electrodes having a fluid surface, which employs a surface energy effect to maintain a position of the fluid surface and/or modulated flow within the fluid.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) supplying electrochemical energy involving connecting an electrical load to a first and a second electrode separated by an electrolyte arranged to conduct an ionic current from a first electrolyte surface in contact with the first electrode to a second electrolyte surface in contact with the second electrode, where at least one of the first and second electrodes includes an electrochemically active fluid sheet that clings to a solid support by a surface energy effect in opposition to an acceleration field, a surface of the electrochemically active fluid sheet being in contact with the electrolyte;    (2) charging a battery involving connecting an electrical potential to a first and second electrode separated by an electrolyte arranged to conduct an ionic current from a first electrolyte surface in contact with the first electrode to a second electrolyte surface in contact with the second electrode, where at least one of the first and second electrodes includes an electrochemically active fluid sheet that clings to a solid support by a surface energy effect in opposition to an acceleration field, a surface of the electrochemically active fluid sheet being in contact with the electrolyte;    (3) refreshing a battery that produces a fluid reaction product of an electrochemical reaction, involving refreshing the battery by flowing the fluid reaction product; and    (4) an electrode for a battery, comprising an electrochemically active fluid layer that clings to a smooth solid support by a surface energy effect, the electrochemically active fluid layer being configured for contact with an electrolyte; and    (5) making a battery involving coupling an electrolyte with two electrodes including an anode and a cathode, where at least one of the electrodes is configured to support an electrochemically active fluid layer in ionic communication with the electrolyte by a surface energy effect on smooth solid support.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of electrochemical device.    Cathode (100)    Anode (102)    Electrolyte (104)    Fluid layer (108)    Ion-transport fluid (110)    Porous layer (112)    Reservoirs (114, 116)