Hydrogen solidifies at an insanely low 14 Kelvin. Using an ideal Linde liquefaction cycle will waste you 30% of the energy contained in the fuel simply to perform this deep freeze. You get a relatively low density fuel, about 5 times less energy dense than gasoline, that you will need to protect with massive thermal insulation (think Space Shuttle external tank) otherwise it will outgas like crazy and be an imminent explosion risk. When you add the electrolysis and fuel cell loses, you get a bulky but inefficient vehicle.
Sorry, this will never happen, regardless of what some hard SF author converted to futurologist may have led you to believe.
Double or nothing?
High absorbency materials have been around for a while, but they failed commercially, they are typically more trouble then the equivalent high pressure COPV tank. Maybe a hype laden Wordpress template website will change it, but I wouldn't hold my breath.
What else am I wrong about?
Li-ion is a bridge to H2, an enabler.
H2 fuel pellets will be passed around like hard candy.
H2 production will be just as distributed, decentralized as our future energy generation.
Li-ion will peak ~2032, hitting yearly (battery) production of ~8T gw/h, and state of the art attaining a large fraction of theoretical max energy density.
Assuming H2 today is ~= Li-ion 2006, peak H2 would be ~2050. Assuming civilization lasts that long.