The challenge of efficient storage and transportation of hydrogen for use in fuel cells still needs to be adressed. In the following it is described how ammonia has potential to become one of the important indirect hydrogen carriers. Aside from hydrogen, ammonia provides the only carbon-free chemical energy carrier solution, giving no CO2 emission at the enduser. Ammonia is not a green house gas (GHG), and in light of the global climate challenges with respect to GHG outlined, e.g. in the Kyoto protocol, combined with a high hydrogen density, NH3 could be an interesting alternative to direct hydrogen storage.
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