How much energy do you need to compress this H2 ?
One of the technologies metal organic frameworks (MOF) seems to have been creating some buzz recently.
General overview: https://www.energy.gov/eere/fuelcells/materials-based-hydrog...
It's only on longer distances that it begins to make sense as a tradeoff but even there it's not clear there's much room for it in the market.
I'm not sure how the life-cycle overall energy usage compares, would be interested in reading a study of someone wants to link one.
I'm hoping that hydrogen storage will become easy enough that we'll use that for large scale excesses like those from nation-size grids during excess production. So we can do seasonal shifting at scale.
They're still better than conventional ICE (as long as the hydrogen is made from renewable energy) but just on energy alone BEVs are about 88% efficient, FCEVs 22% and ICE 18% efficient.
As a BEV owner, I'll tell you right now that until the H2 can be filled at my house, I'm not willingly giving back the portion of my life I used to spend at a fuel station.
At the rate batteries and charging are improving year-over-year, compared with the practically non-existent hydrogen infrastructure (how many states have -any- hydrogen fueling stations? Two?), I can't see hydrogen ever taking over. We have a grid already which delivers electricity far more extensively than any liquid fuel infrastructure ever will.
A battery lasts for many years. H2 is used more or less immediately.