A hydrogen generator includes a housing, a solid hydrogen source disposed
within the housing, and an inlet configured to guide a fluid to contact
the solid hydrogen source. The inlet can contact a wicking region. The
wicking region can include a wicking material that has an affinity for
the fluid. The wieking material can include a hydrophilic material. The
housing can include a hydrogen gas outlet. The hydrogen generator can
include an end cap at one end of the housing including the inlet and the
hydrogen gas outlet. The hydrogen gas outlet can include a gas permeable
membrane. The inlet can be fluidly connected to a fluid control system
configured to control fluid flow rate to the solid hydrogen source. The
generator can be portable.