Aluminum-gallium composite for clean efficient hydrogen fuel
phys.org
phys.org
Sodium hydroxide is very cheap chemical that can be used instead to get hydrogen with aluminium, and unlike gallium don't have to be recycled. Perhaps the whole "get hydrogen from aluminium scrap" thing does not make economical sense anyway.
”Although gallium is not abundant and is relatively expensive, it can be recovered and reused multiple times without losing effectiveness, Singaram said.”