NOVELTY - The electrode (100) has a planar main portion that is configured with sides. Each side is provided with a corresponding pattern of protrusions (125). Each protrusion has a geometrical base within the plane of planar main portion and a planar top side. The orthogonal projection of top side onto main portion is contained in geometrical base. The top sides of the respective protrusions of sides are configured to lie in two planes parallel to planar main portion which is made of metal. The electrode is coated with the PTFE.    USE - Bipolar electrode for use in electrolysis unit used in hydrogen production and fuel cell of energy storage and supply unit (all claimed).    ADVANTAGE - Water is distributed between the different electrodes of reactor, hence ensuring adequate presence of reactant to carry out electrolysis reaction since pattern of protrusions is repeated on smaller scale on the top sides of the protrusions. The ratio of the area of the planar top side of the protrusions to the area of respective geometric base is increased to improve the efficiency of the electrode, as the total active surface participating in the electrolysis becomes small. Material stresses caused by manufacturing are distributed in a homogenous way, to avoid the creation of weakness points. The dead corners are absent in protrusions, thus obstacles for proper flow of the fluids in the reaction are prevented. The occurrence of ridges of the protrusions is minimized, thus problem of collecting gas bubbles is eliminated. Electrode can be protected from corrosion due to polymer coating, hence increasing useful life time of electrode. The electrodes can be combined in dense stack to produce a compact and reliable electrolysis unit. The bipolar electrode with adequate balance between providing sufficient active area for the electrolysis process is achieved and the entrapment of produced gas is prevented. The high yield can be achieved while the produced hydrogen gas retains adequate mobility without the need for forced convection. Hence, the need for moving units is avoided, and an efficient, low-maintenance electrolysis unit can be achieved.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) an electrolysis unit;    (2) an energy storage and supply unit; and    (3) a method for producing the bipolar electrode.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the bipolar electrode for use in electrolysis unit.    Bipolar electrode (100)    Supply opening (110)    Active zone (120)    Protrusions (125)    Exit opening (135)