26 Sep '11, 12pm

Could 500 psi hydrogen storage tanks make H2 vehicles more feasible?

UK's first public-access hydrogen fueling station – the one opened by Honda just days ago – dispenses hydrogen at 350 bar (5,076 psi) and 700 bar (10,153 psi). The reason is that these are the two standard filling pressures adopted by the world's major automakers, and it requires a lot of technological work to keep the H2 in a tank that pressurized. But what if 500 psi becomes the standard? That's the pressure that a group of scientists believe will take hydrogen fuel cell vehicles to the next level. The team argues that storage units designed to hold hydrogen at 10,000 psi are quite expensive and claims the moderate 500 psi is far more practical. In the online issue of Journal of Physical Chemistry Letters, a group of scientists published a paper titled, "Hydrogen Spillover Effect of Pt-Doped Activated Carbon Studied by Inelastic Neutron Scattering." Omitting most of the ...

Full article: http://green.autoblog.com/2011/09/26/could-500-psi-hydrog...

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