And when heated to around 80 degrees Celsius they discharge their hydrogen content in just a few minutes, overcoming the problem of conventional hydrides
, that release their hydrogen content very slowly, over around 30 to 60 minutes, making them unsuitable for use in cars.
AE from friction between the indenter and hydride
were separated from AE by the Mode-I crack, using the polarization distribution of the first arriving So-mode waves .
An initiative by the European Union's (EU) Marie Curie Research Training Network that has brought together experts from 13 research institutions across the continent--the Complex Solida State Reactions for Energy Efficient Hydrogen Storage (COSY) project--is aiming to shrink the storage system by developing nano-structured composites of various light-metal hydrides
to contain the hydrogen.
Larin, in his 1993 book, Hydridic Earth, (1) presents laboratory results showing four successive pressure ranges with distinctly different hydride
species (Table I, Figure I).
Buck Scientific makes hydride
generation AA systems, as does HelmoTee, which is more oriented toward portable systems.
Besides debuting the new charger, the company has rolled out a line of rechargeable AA and AAA alkaline and nickel metal hydride
batteries under the Juice brand name.
Burns, who believes that hydrides
may ultimately be the safest practical way to carry hydrogen in FCVs, says this is in the range where they can be effectively used for fuel cells.
The other has developed a method of storing hydrogen at a high weight in a hydride
that beats previous attempts to release the fuel at low temperatures.
Elsewhere at Oxford, a team led by Prof Peter Edwards has found a way of storing hydrogen at 8-9 weight per cent in a hydride
that releases it again when subjected to temperatures of around 80[degrees]C.
Sandia National Laboratories will work with GM's Advanced Hydrogen Storage Program in developing metal hydride
As nickel-metal hydride
(NiMH) batteries--the rechargeable power source for hybrid electric vehicles (HEVs)--are popping up in the auto market with increasing frequency, so are issues concerning how to best recycle the emerging commodity.
In operation, a metal hydride
is formed when gaseous H2 molecules dissociate into individual hydrogen atoms and bond with metal atoms in the storage alloy.