Progress is being made on systems to make hydrogen more economical to store and transport.
An old diesel freight train in British Columbia, Canada is about to get a new lease of life.
Hydrogen, which emits water but no carbon dioxide when burned, is often touted as a fuel of the future.in the German state of Lower Saxony. The technology made its debut there in 2018.But current methods of storing hydrogen in tanks, as a highly pressurised gas or extremely cold liquid, are expensive and potentially unsafe. Scientists have long aimed to find ways of storing hydrogen in more inert solid forms.
She adds that hydrogen could be especially useful for powering heavy vehicles that go on long journeys, such as trains and lorries, though the company has also developed a hydrogen-powered three-wheeler tuk tuk as a small-scale demonstration. Though some of them are exciting, the huge challenge they face is to prove that they are commercially viable and worth choosing over, say, batteries for certain applications.
It involves a technique called ball milling, a sort of grinding process using tiny balls inside a canister. This grinding activity raises pressure levels, encouraging gases to become absorbed by a powder inside the canister.
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