TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Components: The regenerated nitric acid flowstream is reused in the catholyte flowstream. The anode is a first flow-through electrode having an outer side and an inner side. The first flow-through electrode includes passageways extending from the outer side to the inner side. The cathode is a second flow-through electrode having an outer side and an inner side. The second flow-through electrode includes passageways extending from the outer side to the inner side. A catholyte recirculation reservoir (128) containing nitric acid includes a first inlet port (130) and a first outlet port (132). The first inlet port is fluidically connected to the catholyte effluent flowstream. The first outlet port is fluidically connected to the catholyte flowstream.An anolyte recirculation reservoir (134) containing the fuel includes a second inlet port (136) fluidically connected to a degassed anolyte effluent flowstream (140) and a second outlet port (138) fluidically connected to the anolyte flowstream. The fuel for reacting at the anode yields anode reaction products that include unreacted fuel, water and carbon dioxide in an anolyte effluent flowstream (144).The fuel cell system further comprises a gas separation zone (142) configured to separate the anolyte effluent flowstream into a carbon dioxide flowstream (146) that includes the carbon dioxide and a degassed anolyte effluent flowstream that includes the unreacted fuel and water. A carbon dioxide storage reservoir (148) for storing the carbon dioxide of the carbon dioxide flowstream includes a third inlet port (150) fluidically connected to the carbon dioxide flowstream. A hydrogen peroxide storage reservoir (152) for storing the hydrogen peroxide of the hydrogen peroxide flowstream includes a third outlet port (154) fluidically connected to the regenerated nitric acid flowstream via the hydrogen peroxide oxidation zone. Each of the anolyte, catholyte and hydrogen peroxide flowstreams has a flowrate of 2 muL/minute to 1 mL/minute.Preferred Dimensions: The anode has a thickness of 50-500 microns. The cathode has a thickness of 50-500 microns.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Materials: The acid electrolyte of the anolyte flowstream is greater than 1 M sulfuric acid solution. The catholyte flowstream further includes an acid electrolyte, preferably a solution of greater than 0.4 M nitric acid and greater than 1 M sulfuric acid. The hydrogen peroxide flowstream is a solution of 50-70 wt.% hydrogen peroxide. The anode is composed of silicon. The cathode is composed of silicon. The carbon dioxide reservoir further comprises soda lime for absorbing the carbon dioxide.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Materials: The fuel is methanol. The anolyte flowstream includes 1-5 M methanol and an acid electrolyte.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Materials: The acid electrolyte of the anolyte flowstream is greater than 1 M sulfuric acid solution. The catholyte flowstream further includes an acid electrolyte, preferably a solution of greater than 0.4 M nitric acid and greater than 1 M sulfuric acid. The hydrogen peroxide flowstream is a solution of 50-70 wt.% hydrogen peroxide. The anode is composed of silicon. The cathode is composed of silicon. The carbon dioxide reservoir further comprises soda lime for absorbing the carbon dioxide.