A method and apparatus for generating hydrogen gas by reacting a nanogalvanic alloy with water vapor. The apparatus comprises a water vapor source for supplying water vapor to a reaction chamber containing a nanogalvanic alloy. The nanogalvanic alloy reacts with the water vapor to produce hydrogen.

In some embodiments, a reactor and/or related may generate pressurized hydrogen within an internal volume by combining water and a water reactive material. In some embodiments, the reactor may include a flexible porous membrane configured to contain water reactive material disposed in an internal volume. In some embodiments, the reactor may include a support configured to support a water reactive material in an internal volume.

In some embodiments, a reactor and/or related may generate pressurized hydrogen within an internal volume by combining water and a water reactive material. In some embodiments, the reactor may include a flexible porous membrane configured to contain water reactive material disposed in an internal volume. In some embodiments, the reactor may include a support configured to support a water reactive material in an internal volume.