TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Components: The carrier material for the target gas is at the bore- or shell side of the microtubular elements. The tubular walls of the microtubular elements are not permeable to the target gas. The microtubular elements are potted at end(s) by potting components, so that the bore sides of the microtubular elements are sealed from the shell sides by the potting mechanisms in a leak-tight manner, where the potting mechanisms and the housing define liquid compartment(s) for holding the liquid carrier material, and hydrogen collection compartment(s) separated from the liquid compartment in a leak-tight manner, where the microtubular elements extend from the liquid compartment to the hydrogen collection compartment, so that the shell sides of the microtubular elements at least partially contact the liquid carrier material in the liquid compartment, and that the bore sides of the microtubular elements are in fluid communication with the hydrogen collection compartment, where the housing comprises hydrogen outlet(s) connected to the hydrogen collection compartment for dispensing hydrogen gas. The storage and dispensing system is arranged and configured for supplying hydrogen gas to a downstream hydrogen fuel cell assembly for generation of electrical energy, where the hydrogen fuel cell assembly comprises a water management mechanism for removing water generated during the electrochemical reaction from the assembly, and the water supply of the storage and dispensing system is connected to the water management mechanism of the hydrogen fuel cell assembly, so that the water generated by the hydrogen fuel cell assembly is controllably added to the liquid compartment of the storage and dispensing system. The hydrogen supply structure further comprises a tubular membrane that encloses the carrier material, and the tubular membrane is hydrogen-permeable.    TECHNOLOGY FOCUS - METALLURGY - Preferred Components: The carrier material for the target gas comprises sorbent material(s) having sorptive affinity for the target gas. The sorbent material comprises a physical sorbent and/or chemisorbent. The target gas comprises hydrogen, and the sorbent material comprises hydrogen-sorbent(s) comprising metal hydride alloys, carbonaceous materials, zeolites, silica gels, amorphous metal compositions, or molecular sieves.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The carrier material for the target gas comprises a liquid carrier material comprising liquefied hydrogen, organic hydrogen solvents, or metal hydride solutions. The metal hydride solution comprises sodium borohydride.Preferred Composition: The metal hydride solution comprises sodium borohydride at 10-35 wt.%, and further 2-4 wt.% sodium hydroxide.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The tubular walls of the microtubular elements comprise a membrane material that is gas-permeable but liquid-impermeable. The membrane material comprises a microporous hydrophobic polymeric material. The porous polymeric membrane material comprises a polymeric material consisting of polyolefins, polysulfones, polyvinyl chloride, polyvinyl fluoride, polytetrafluoroethylenepoly-propylene copolymer, polyamides, polyphenylene oxide, polystyrenes or polycarbonates. It preferably comprises polypropylene.