Abstract: A substrate 10 that selectively allows hydrogen to permeate therethrough is formed with a catalyst thin layer 20 on a first side 11 thereof and is heated in a furnace tube 110, which functions as a reactor, of a heating furnace 100 while a raw material gas to the catalyst thin layer 20 is fed. Hydrogen produced on the first side 11 of the substrate 10 as a result of the formation of carbon nanotubes 5 is separated from the raw material gas and is allowed to permeate to a second side 12 thereof.

Abstract: The present invention provides a hydrogen-generating apparatus comprising two catalytic reactors cyclically operating reforming and regeneration (combustion) mode, in which the reduction in reforming efficiency associated with an increase in switching frequency to the regeneration reaction can be suppressed, and generation of hydrogen by reforming can stably be performed. In the reforming reaction, a cathode offgas discharged from a hydrogen-separation-membrane fuel cell 30 having a hydrogen-permeating film is supplied to PSR reformers 10 and 20, in which the reforming reaction and the regeneration reaction are performed alternately.

Abstract: A solid electrolyte includes a metal part having a hydrogen permeability and a metal oxide part having a proton conductivity. The metal part and the metal oxide part are formed integrally. A boundary face formed at a boundary between the hydrogen permeable metal part and the solid electrolyte part is restrained, because the hydrogen permeable metal part and the solid electrolyte part are formed integrally. A peel strength between the hydrogen permeable metal part and the solid electrolyte part is increased.