Apparatus and method for gas generation in a fuel cell

A gas generation system includes a chemical reactor integrated with a liquid/gas separator. The reactor is configured to receive a continuous stream of aqueous solution and to generate hydrogen produced in the reaction of water and a metal hydride. The gas/liquid separator comprises a hydrophobic membrane (46) which is wrapped around a catalyst (40) and hydrophilic membranes (42,44) which cover inlet (36) and outlet (38) of the chemical reactor. The gas generation system can be directly connected to a or integrated in a fuel cell.