NOVELTY - The electrolytic cell (10) has a positive electrode (14) disposed in one electrolytic compartment (30), and a negative electrode (12) disposed in another electrolytic compartment (24). A transducer (20) is directly attached to the negative electrode or the positive electrode. Vibrational energy selectively transmitted to the negative electrode or the positive electrode by the transducer causes bubbles to form and to separate hydrogen gas bubbles from a surface of the negative electrode and/or oxygen gas bubbles from a surface of the positive electrode.    USE - Electrolytic cell for hydrogen fueling system (claimed), e.g., for powering fuel cell electric vehicle or other systems that utilize hydrogen gas as fuel, such as auxiliary power systems.    ADVANTAGE - Reduction or elimination of gas transport across the cell membrane is accomplished, at least in part, by the generation of gas bubbles at or on the electrode, where such gas bubbles rise to the top and out of the electrolytic cell rather than diffuse through the membrane, thus allowing formation of a relatively gas-tight hydrogen gas compartment and a relatively gas-tight oxygen gas compartment. Eliminating hydrogen gas permeation through the cell membrane advantageously keeps the hydrogen gas from exothermally combining with the oxygen gas, and thus improves gas purity, reduces or eliminates elastomeric hose failure at the surface of the electrolytic cell, and results in higher pressure operations and a higher yield of usable hydrogen gas.    DETAILED DESCRIPTION - A cell membrane (16) is positioned between the electrolytic compartments. An electrolyte solution (26) is disposed inside the electrolytic compartments and is in contact with the cell membrane. INDEPENDENT CLAIMS are also included for the following:    (1) a method for making an electrolytic cell; and    (2) a method for enhancing electrolytic cell performance.    DESCRIPTION OF DRAWING(S) - The drawing is a cross-sectional, semi-schematic perspective view of an electrolytic cell.    Electrolytic cell (10)    Negative electrode (12)    Positive electrode (14)    Cell membrane (16)    Transducer (20)    Electrolytic compartment (24)    Electrolyte solution (26)    Electrolytic compartment (30)