TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Component: The molar ratios of sodium hydride, aluminum, and titanium are 0.7:1:0.1. The molar ratio of sodium hydride is 0.1-0.88. The molar ratio of titanium is 0.04-0.3, or equal to (1.0 minus the molar ratio of sodium hydride in the composition) divided by three.Preferred Condition: The Composition has been heated at least182degreesC. The mixing occurs in the absence of ball milling. The heating occurs at 200-250degreesC. The process is performed under a noble gas, e.g. argon, atmosphere.    TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Component: The cassette contains an opening that is sealed with valve(s). It comprises a single two-way valve, two one-way valves, or a bidirectional one-way valve. The valve opens when hydrogen gas is generated from the composition, or when external hydrogen at least2 atm is applied. The system also includes a heater for heating the composition to 100degreesC, smart chip for reporting theconditions inside the cassette to an external information processing and control system, and information processing and control system.Preferred Property: The opening and closing of the valves is electrically controlled. The conditions include temperature, pressure and amount of hydrogen charge remaining in the cassette. The cassette is installed in a vehicle and the conditions are reported to the operator of the vehicle. EXAMPLE - Bis(cyclopentadienyl) titanium di hydride was synthesized from dicyclopentadiene, which was heated to undergo a reverse Diels-Alder reaction. The resulting cyclopentadiene was reduced in the presence of titanium to yield bis(cyclopentadienyl) titanium di hydride. The components were added together in a molar ratio of 0.7 sodium hydride to 1 aluminum to 0.1 bis(cyclopentadienyl) titanium di hydride. After brief mixing, the components was packed into a container (e.g. cassette module) and heated to 190degreesC for 30 minutes. The resulting porous sintered composition was used without further modification. The heating drives off the cyclopentadienyl Component, leaving sodium, aluminum, titanium, and hydrogen in the resulting composition.