The idea behind using ammonia is that the chemical is safe to store, is easy to get (it's the second most prevalent chemical in the world, HEC wants you to know) and contains more hydrogen per cubic foot than liquid hydrogen. HEC President Ted Hollinger, who was formerly Director of Engineering at Ford Motor Company and Vice President of the Power Conversion Group at Ballard Power Systems, calls ammonia the "other hydrogen" and has been promoting ammonia as a hydrogen source for years (he gave a presentation on ammonia and hydrogen ICEs in 2004). HEC says that ammonia stores like propane, contains no carbon and there is an ammonia infrastructure already in place thanks to the chemical's use in agriculture.
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