Since the Hindenburg disaster, hydrogen has been known more for its risks than its uses as a fuel component. In its liquid form it has of course been used as rocket fuel, and more recently it has made an entrance as a potential alternative to lithium-ion batteries in cars. Not only is lithium-ion not free from hazards itself, the batteries also add more weight and volume to a device than a tank full of H2. Setting up a supply infrastructure remains an issue, and storage risks make people uncomfortable.
What if hydrogen could be produced in its metallic form? A metal, easy and safe to transport and store? What if this metal could be readily re-converted to its liquid state as needed to be used in fuel cells? A vision of a distant future, perhaps, but professor Isaac Silvera of Harvard University claims to have just taken the first step, the creation of metallic hydrogen. I had a very interesting conversation with him, the product of which was just published on Kitco News. Here is the link: http://www.kitco.com/commentaries/2017-03-21/Metallic-Hydrogen-a-New-Area-in-Hydrogen-Storage.html