>>28489573
>>28482284 (OP)
I work with hydrogen on daily basis (chemical industry)
people think hydrogen is "basically the same as propane, but made from water"
you could not be further from truth
50L tank at 100bar holds about 25kg of propane (about 1GJ of energy)
the same tank at 100 bar will hold only 0,4kg of hydrogen (that's right, 400 GRAMS), which is about 0,05GJ of energy
This is why everyone who ever tried building hydrogen car used liquid hydrogen tank rather than compressed hydrogen tank, increasing the complexity tenfold and preventing hydrogen to be use the similar (let alone the same) infrastructure as LPG/CNG
So your tank is at -253°C, which means it will be constantly boiling off and releasing hydrogen into the air (if it didn't, the tank would just explode like a bottle filled with dry ice).
IIRC Mirai would be empty after standing for like a month and it has an actually decently insulated tank.
Embrittlement and H2 seeping through metal itself is also a thing, but it's not as bad as some make it out to be - provided you use the right alloys ($$$)
Another point. 99% of hydrogen is made as side product in gasoline production
Electrolysis is far more expensive and energy losses are so high that it makes no financial sense except for a small handful of cases.
You are better off using electricity directly, in EVs.
With hydrogen you get ALL disadvantages of current EVs or worse (more expensive, might explode if tank ruptures in a crash, slower to refuel than EVs, lower range than most EVs)
ALL disadvantages of ICEVs (can't refuel at home, even higher fuel costs, high complexity)
>tl;dr hydrogen does not behave as LPG/CNG and doesn't offer any benefit besides virtue signaling
