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View Diary: Recent DOE Break-Through with Hydrogen Fuel Cells, should make them Affordable (275 comments)

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  •  Hydrogen can also be stored... (0+ / 0-)

    ...in a solution of sodium borohydride - basically borax with a couple of hydrogen atoms added.  You'd keep a solution of sodium borohydride and water in the tank, and when it's used up, you're left with a solution of water and borax.  You'd drive to a filling station, empty the tank and refill with fresh sodium borohydride and water, and the stuff you dropped off can be recycled back into sodium borohydride for the next guy!

    Chrysler had this system working as long ago as 2002 - I don't know what's happened to it since then, but it sure looks like a safe, efficient way to store hydrogen for your fuel cell vehicle.  Here's a link and a quote:

    http://www.tuition.edu.hk/...

    However, other compounds are being experimented with that are easier to catalytically convert to hydrogen for a fuel cell and can be more easily stored in a vehicle’s fuel tank. An example of the type of system that could work is being experimented on at Daimler-Chrysler. It involves simple borate, borax, a compound chemical that is produced and used for soap. A running prototype minivan was displayed at the North American Auto Show in 2002. The hydrogen fuel cell can run on hydrogen that is liberated in a simple chemical reaction from sodium borohydride. This chemical can be made in refineries from a combination of borax soap and Hydrogen gas. The vehicle could run on sodium borohydride, which would be processed in the car to yield hydrogen gas for the fuel cell. The only exhaust product would be water (H20). The other waste product would be borax (a form of soap), which would then have to be reprocessed to sodium borohydride, to refuel the car again. Infrastructure to produce hydrogen from methane or ammonia and then produce sodium borohydride would be necessary at your local refueling station.

    PB PAC is closing - we made our final donation ($460.59) to the WI recall!

    by AnotherMassachusettsLiberal on Sun Apr 24, 2011 at 06:37:17 PM PDT

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