One aspect of the invention provides an ion-conducting membrane (20) comprising an ion-conducting region (33) and a non-ion-conducting region (35A, 35B). The ion-conducting region is formed by a plurality of ion-conducting passageways (27) that extend thro...

A fuel supply connectable to a fuel cell is disclosed. The fuel supply comprises an outer casing having a smooth inner surface, and an inner fuel container containing a fuel for the fuel cell and having a smooth outer surface, wherein the inner fuel contai...

A fuel cartridge (10) with an inner fuel container (14) connectable to a fuel cell is disclosed. A gas venting member is disposed on the inner fuel container for venting vapors from inside the inner fuel container to a point outside of the inner fuel conta...

Fuel supplies including multiple valve components and fuel cell systems having increased operational resistance to the insertion and/or removal of fuel supplies are disclosed. The increased operational resistance is provided by increased insertion or remov...

Fuel supplies including multiple valve components and fuel cell systems having increased operational resistance to the insertion and/or removal of fuel supplies are disclosed. The increased operational resistance is provided by increased insertion or remov...

The present invention is directed to a fuel cell system with various features for optimal operations of an electronic device, a battery charger or a fuel refilling device. The fuel cell system includes an information storage device associated with the fuel...

Fuel cartridges for fuel cells are disclosed. One fuel cartridge includes an outer casing, an inner liner containing fuel, and a valve component adapted to transport fuel from the fuel supply to a fuel cell. The outer casing and the inner liner are made by...

A fuel supply (40) for a fuel cell comprises a fuel gauge (78, 80) for determining the remaining amount of fuel. The fuel gauge (78, 80) is coupled to an electrical circuit and has a property that is readable by the electrical circuit that relates to the a...

The present invention is directed to a fuel cell system with various features for optimal operations of an electronic device. The fuel cell system includes a fuel cartridge with a fuel reservoir containing fuel and a membrane electrode assembly (MEA) or a ...