TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The solid hydride is in a form selected from a powder, a granule and a pressed particle. The capsules are openable for discharge of the hydride into an aqueous solution for forwarding to a catalyst bed. The capsule is formed as a coating surrounding the hydrogen-generating hydride. The capsule is pulverizable for release pf the hydride into an aqueous solution for forwarding to a catalyst bed. The solid hydride is combined with a stabilizer or binder. The stabilizer or binder is selected form sodium carbonate, sodium aluminate and sodium silicate. The fluid is a liquid selected glycol, mineral oil, heat transfer fluid, silicone and an aqueous solution; or an inert gas selected form nitrogen, argon, dry air and carbon-dioxide-free air. Preferred Method: The method involves separate heating and cooling units for the at least two separate insulated containers, where each of the container is provided with agitation unit for maintaining the reaction product as a pumpable slurry. At least one of the container is provided with compaction unit for forming the reaction product into pumpable pellets of predetermined size. Water generated from a fuel cell reaction, based on hydrogen produced in the system is fed to a catalytic bed used for effecting the catalytic hydrolysis, the water serving to clean the catalyst bed, to prevent clogging of by reaction product slurry and to enable the utilization of high concentration fuel solutions (77). The hydrolysis reaction product is metaborate product with is electrochemically regenerated into borohydride in an aqueous electrochemical synthesis cell, where the anode of the cell is a hydrogen consumption electrode. The container for storage of borohydride fuel is provided with at least one catalytic hydrogen recombination valve (76). The hydrolysis product is at least partially dehydrated utilizing heat from the hydrolysis process, or waste heat of fuel cell or hydrogen engine.