this post was submitted on 08 Mar 2024
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As far as I can tell, the only benefit is green hydrogen can be faster to fill as long as the filling station has had a rest between cars.
The disadvantages include some killers: the woeful energy efficiency ensures the cost of driving a FCEV can never be less than three times the cost of driving the same distance in a BEV, and that's even if someone just waves a magic wand and a trillion dollars worth of hydrogen infrastructure appears out of thin air.
Fuel cell EVs kind of make sense as plug-in hybrids, where you have around 80km of battery range for daily use and use hydrogen for longer trips. You need a lot less filling stations and spend a lot less time using expensive hydrogen that way, but that's not Toyota's vision.
Comparing charging infrastructure and hydrogen infrastructure isn't really an apples-to-apples comparison, because charging reuses a lot of pre-existing infrastructure. You can buy and drive a BEV with zero charging stations, just plugging it in to an outlet in your garage overnight. In the early days there was a lot of charging from caravan parks and the like. I've got a portable charger that plugs in to the three phase outlets you find in parks and showgrounds. There's no hydrogen equivalent to any of that, 100% of your energy needs to come from a FCEV filling station.
I get this. But my brain just can't wrap itself around that you have the complexity and disadvantages of both systems in the one vehicle.too.
I'm in the city. Apparently having batteries means you couldn't drive far enough and would catch on fire lol. I was asking someone the other day how often they drove more than 50km from their home, and they looked at me like I was an alien. Full on tilt.
Well, fuel cell EVs already need a battery because the fuel cell can't do regen. So it's already a hybrid, you're just making the battery a bit bigger and adding a plug.