NOVELTY - A hybrid capacitive storage system (6) has first dielectric layer (16) impermeable to hydrogen; first catalytic electrode layer (12) on portion of first surface of first dielectric layer; electrode layer on portion of second surface of first dielectric layer; and field generator for selectively applying field to the storage system.    USE - Used in hybrid capacitive storage stack for storing electrical energy and hydrogen (claimed).    ADVANTAGE - The invention provides gas storage materials that are light, compact, inexpensive, safe and easy to use. It is capable of storing and releasing hydrogen at atmospheric temperature and pressure. It allows charging/uptake and releasing of gas to be well controlled.    DETAILED DESCRIPTION - The hybrid capacitive storage system comprises first dielectric layer impermeable to hydrogen; first catalytic electrode layer on portion of first surface of first dielectric layer and converts molecular hydrogen into atomic hydrogen; electrode layer on portion of second surface of first dielectric layer, which is selectively electrically connected to the first catalytic electrode layer; and field generator for selectively applying field to the storage system, in which upon introduction of hydrogen to the storage system and activation of the field generator, hydrogen is converted to protons and electrons, the electrons are permitted to flow through electrical connection to the electrode layer and the protons remain at the first catalytic electrode layer.    An INDEPENDENT CLAIM is also included for a method for storing electrical energy and hydrogen comprising introducing molecular hydrogen to first dielectric layer; converting molecular hydrogen into atomic hydrogen; and selectively applying field to convert the atomic hydrogen into protons and electrons.    DESCRIPTION OF DRAWING(S) - The figure shows the hybrid capacitive storage system.    Storage system (6)    Electrode layer (12)    First dielectric layer (16)    Second electrode layer (24)    Surfaces (32-36)