AMMONIA AS A FEEDSTOCK FOR A HYDROGEN FUEL-CELL - REFORMER AND FUEL-CELL BEHAVIOR

In this paper, an indirect ammonia fuel cell system is proposed which circumvents the problem of hydrogen storage. System analysis shows tha t the specific energy density (kWh/kg or kWh/m3) of such a system is v ery attractive compared with that of a direct hydrogen fuel cell syste m. The fuel cell stocks have an important impact on these figures. How ever, both the indirect ammonia and the direct hydrogen systems use th e same type of fuel cells, and improvement in fuel cell characteristic s will improve the specific power and energy densities of both systems . Earlier work also showed that ammonia is a more attractive fuel than methanol for an indirect fuel cell. Ammonia therefore merits more att ention as a fuel cell feedstock.