[kragen]

agreed. there are a fairly wide range of possible hydrogen storage forms like this (ammonia, carbohydrate, hydrazine, metal hydrides) but paraffin has many practical advantages. possibly aluminum (without any actual hydrogen, similar to the iron in the article) is superior, due to lower weight and higher round-trip efficiency, but possibly not. i think we can take widespread fischer-tropsch fuels for granted as part of the transition to renewable energy