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05-26-2008, 04:18 AM
ccm911 wrote:
It's not harvested, but made typically by an electrochemical reaction.
It's not the cheapest gas to make, hence one of the reasons that fuel cells for cars have been so elusive - making the hydrogen is one problematic aspect (typically the fuel cells run close to 200C) and storing the hydrogen that you've made is the other problem. A lot of work is going on to make ultra-high capacity adsorbents for hydrogen. The idea is to have a large amount stored in a compact package. We've not really figured out how to do that yet.
Quote:Well then, how is it "harvested"? Can it be made employing a chemical reaction?
It's not harvested, but made typically by an electrochemical reaction.
It's not the cheapest gas to make, hence one of the reasons that fuel cells for cars have been so elusive - making the hydrogen is one problematic aspect (typically the fuel cells run close to 200C) and storing the hydrogen that you've made is the other problem. A lot of work is going on to make ultra-high capacity adsorbents for hydrogen. The idea is to have a large amount stored in a compact package. We've not really figured out how to do that yet.
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