Patent ID: 7674540

Claim:
A fuel supply containing a fuel for use by a fuel cell comprising: a first fuel compartment containing the fuel, a second reactant compartment and a third reaction chamber; wherein the fuel is transported by a pump from the first fuel compartment to the third reaction chamber, where the fuel reacts to form reactants comprising hydrogen gas and liquid reactant, and thereafter the hydrogen gas and liquid reactant are transported through a conduit to the second reactant compartment, wherein the pump meters a rate of flow of fuel from the first fuel compartment to the third reaction chamber; and wherein the second reactant compartment is at least partially inside a housing member and comprises a gas permeable, liquid impermeable membrane disposed on a wall of the second reactant compartment, and the hydrogen gas passes through the gas permeable, liquid impermeable membrane and out of the second reactant compartment and is contained in an internal spacing located between the second reactant compartment and the housing member and then to the fuel cell and the liquid reactant remains in the second reactant compartment.