NOVELTY - A proton exchange membrane fuel cell (PEMFC) (160) based electrical generator (110) comprises a first compartment (112) that contains an amine borane complex; a second compartment (113) containing a hydrogen generation catalyst, where the compartments include water or other hydroxyl group containing solvent, or a weakly coordinating solvent; and a connecting network. The hydrogen generation catalyst comprises cobalt complexes, noble metal complexes, or metallocenes. The noble metal complex is potassium hexachloroplatinate, or sodium hexachloroplatinate.    USE - A PEMFC based electrical generator, e.g. for auxiliary power units for small and remote applications, shelter power, emergency power, external power pack, battery charger, portable power for soldiers, unmanned aerial vehicles, or robotics.    ADVANTAGE - The hydrogen generator is capable of delivering PEMFC grade hydrogen gas safely and reliably in an integrated and self-sustaining device that offers high specific energy storage density. It hydrogen generator provides a constant source of power in a compact size that does not require electrical recharging.    DETAILED DESCRIPTION - A PEMFC (160) based electrical generator (110) comprises an ion-exchange membrane between an anode and a cathode to form a membrane/electrode assembly (MEA) between a fuel gas diffusion layer and an oxidant gas diffusion layer; an oxidant flow network having an input portion for supplying oxidant; and a fuel flow network fluid in fluid connection with the fuel gas diffusion layer. The fuel network has an input portion for supplying fuel, where the fuel flow network is fluidly connected to an in-situ hydrogen generator. The generator comprises a first compartment that contains an amine borane complex; a second compartment (113) containing a hydrogen generation catalyst, where the compartments include water or other hydroxyl group containing solvent, or a weakly coordinating solvent; and a connecting network for mixing contents in the first compartment with contents in the second compartment, where hydrogen gas is generated upon the mixing. The hydrogen generation catalyst comprises cobalt complexes, noble metal complexes, or metallocenes. The noble metal complex is Na3RhCl6, (NH4)2RuCl6, potassium hexachloroplatinate, (NH4)2PtCl6, sodium hexachloroplatinate, or H2PtCl6.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic view of an electrical power source comprising the hydrogen generator coupled to the PEM fuel cell.    Electrical generator (110)    First compartment (112)    Second compartment (113)    Mass flow controller (120)    PEMFC (160)