[fgsfds028374]

The more I learned about H2 the less excited I became.

The stuff literally boils out of the tank when your car is stationary. The refueling process is a weird process of suck and blow and it takes 5-10 minutes.

[amarant]

I think hydrogen has a place as a energy source, but cars are not it.

There are some projects aiming to use it for steel production for example, and in a few areas where batteries aren't feasible, such as long distance flights.

But hydrogen never had a chance at competing with batteries where batteries are an option. In part due to energy inefficiencies in it's production(I'm assuming green hydrogen, since otherwise, What's the point)

[pfdietz]

Hydrogen (or a related e-fuel made from hydrogen) is likely essential for a fully renewable grid, especially at high latitude. Not much of the total energy flow would go through hydrogen, but replacing that component with overprovisioning or batteries could be very very expensive. The hydrogen would be stored underground as a compressed gas, not as liquid. Done right, the energy of compression would be (mostly) recovered when the hydrogen was burned in a turbine.

[bombcar]

In any place hydrogen can be used, you’re probably honestly much better off with natural gas or propane unless you literally cannot have a carbon atom involved.

Liquid fuel is so energy dense that if you have to synthesize it and remove an equivalent amount of carbon from the atmosphere it’s probably still easier and cheaper than hydrogen.

[autoexec]

> The refueling process is a weird process of suck and blow and it takes 5-10 minutes.

That at least seems a lot better than the 30 minute-several hours charge time for electric cars

[theshrike79]

If you're stuck using public infrastructure, EVs aren't for you.

Home charging is where it's at. You leave home practically every day with a full battery with about 20-30 seconds of effort every evening and morning.

[Rebelgecko]

If you have an older EV, sure. Newer ones pretty much all charge in 15-30 minutes.

I guess technically it can take much longer if you're using an L1 charger, but if you just plug into the wall at home you have the advantage of being able to charge overnight while you sleep, whereas for gas or hydrogen it's much more complicated to fill up on your own

[cheradenine_uk]

The losses are a problem not even NASA had a solution to!

"During NASA's Space Shuttle program, which was carried out from 1977 to 2011, more than 24,500 tons of liquid hydrogen were purchased, of which 54.6% was used on-board; the rest was lost during storage, loading, or replenishment"

https://ntrs.nasa.gov/api/citations/20110008561/downloads/20...