Abstract: A coated hydrogen storage pellet; wherein the pellet comprises a hydrogen-storage material; the coating comprises a hydrogen-permeable polymer and the coating has a mean thickness of less than 50 ?m.

Abstract: A process for regenerating spent hydride fuel comprises the steps of (1) generating hydrazine from a plasma; for example generating a solution of hydrazine in liquid ammonia using a plasma generated in a glow discharge cell, (2) contacting the spent hydride fuel with said hydrazine and (3) thereafter separating a regenerated hydride fuel therefrom. The process is widely applicable in regenerating spent hydride transportation fuels which are used to power for example a fuel cell or an internal combustion engine. It is especially useful in regenerating spent ammonia borane fuels such as those arising from the dehydrogenation of ammonia borane/polymer composite fuels.

Abstract: A spacecraft and spacesuit having a radiation shield are disclosed. The shield comprises a hydrogen-containing material encapsulated or bound in a polymer. The hydrogen-containing material has a higher hydrogen content than polyethylene. The hydrogen-containing material may be: encapsulated in a polymer container, sandwiched between layers of polymer, mixed with a polymer as binder, or held in the pores of a polymer foam. The hydrogen may be a hydride or borohydride such as beryllium borohydride, ammonium octahydrotriborate, lithium borohydride tetramethyl ammonium borohydride and beryllium hydride. Methods of manufacturing the shield are also disclosed.