NOVELTY - A fuel cell comprises anode region, cathode region, and electrolytic barrier separating anode region from cathode region and including an acidic or basic non-aqueous electrolyte. The non-aqueous electrolytic has an acid or base ionization constant (Ka) or (Kb) greater than 5 x 10(power-6) at 25degreesC if the non-aqueous electrolyte is an acid or base, respectively.    USE - For producing electric current.    ADVANTAGE - Since the non-aqueous electrolyte is insoluble or only slightly soluble in water, it produces a fuel cell in which the amount of water in the electrolytic barrier does not need to be managed. Non-aqueous electrolyte enables fuel cell to be operated at moderate temperatures as well as low-temperature conditions. The fuel cell may be operated at elevated temperatures, which allows an increase in its efficiency. As the temperature increases, the electrocatalysts on the anode and cathode sides become more active. The anode catalyst becomes less sensitive to gas-phase impurities. Operation of fuel cell at higher operating temperatures enables the exhaust streams to be at a higher temperature than corresponding streams of a low-temperature fuel cell. These streams will have an increased heating value, which maybe harvested through heat exchange or which may remove or lessen the need to heat these streams prior to downstream use.    DETAILED DESCRIPTION - A fuel cell comprises an anode region (36) for receiving hydrogen stream (17); cathode region (38) for receiving a stream (52) containing oxygen (54); and an electrolytic barrier (60) separating the anode region from the cathode region. The electrolytic barrier includes an acidic or basic non-aqueous electrolyte (62). The non-aqueous electrolytic has an acid or base ionization constant (Ka) or (Kb) greater than 5 x 10(power-6) at 25degreesC if the non-aqueous electrolyte is an acid or a base, respectively. The fuel cell has an operating temperature of less than 300degreesC.    An INDEPENDENT CLAIM is also included for a fuel cell system comprising fuel processor and fuel cell stack. The fuel cell processor comprises (i) hydrogen-producing region for receiving a feed stream that includes a carbon-containing feedstock and for producing a mixed gas stream containing hydrogen gas and other gases; and (ii) separation region for receiving the mixed gas stream and separating the mixed gas stream into at least pure hydrogen stream an a byproduct stream containing other gases. The fuel cell stack comprises anode region, cathode region, and electrolytic barrier.    DESCRIPTION OF DRAWING(S) - The figure is a schematic diagram of a fuel cell.    Hydrogen stream (17)    Anode region (36)    Cathode region (38)    Stream (52)    Oxygen (54)    Electrolytic barrier (60)    Non-aqueous electrolyte (62)