If the efficiency of storage vs the mass of the storage medium is advantageous, and the efficiency of producing hydrogen can improve, it might catch batteries.
https://www.google.com/search?q=Liquid+Organic+Hydrogen+Carriers
OTOH, stationary storing of hydrogen obviates the need for lighter medium, which could take the pressure off the supply constraints of making more batteries for mobile use.
Old school:
https://www.google.com/search?q=storing+hydrogen+in+hydrides
Liquid methane is the way to go....Plenty off the Atlantic coast