Comments by "Zrips" (@Zripas) on "Donut"
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@geshscale6068
HHO production is slow and you need specialized tanks to store HHO. Hydrogen only has one benefit at this point, its energy density, other than this its only drawbacks.
No idea why people keep mentioning refueling times, if you can just plug your EV into wall socket over night, then every single day you will have full "tank" which will be allot more than you will ever need. You might save some time if you are doing 5000km trip, but like, how often do you do something like that? And you still need to do regular stops to stretch your legs, go to bathroom and so on, which is more often than your battery can drive you for. So its none issue in general. And recharge times are increasing and soon we will options to recharge from 20 to 80% in few minutes.
And for refueling stations, again... Its not as simple as just getting electrical cable to the spot... You actually need either actual mini plant to not only generate hydrogen, but to store it. To build stations like that is exponentially more expensive than EV station with exponentially more maintenance required down the road. Hydrogen stations generally are more complex and more expensive than current fuel stations in build and maintenance costs.
Hydrogen can work in specific applications where you need more energy density and you have local access to refueling station. For regular cars, EV's are the way to go and allot more future proofed.
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@DawidSienczak
Issue with hydrogen cars is about its complexity from end to end. There is no pure hydrogen on earth, all the hydrogen needs to be produced, which is expensive process. Then you need to store that hydrogen, which is yet another expensive thing due to so called hydrogen embrittlement which on itself causes a thing where all hydrogen tanks will have expiration dates printed on them, which is around 5 years. And then you need to think about hydrogen transportation as you can't have thousands tiny hydrogen plants inside cities, then storage (again) at the refueling stations, then expensive to build and maintain hydrogen refueling stations, then you fill up to your car which will have to store that hydrogen (again) and only then you can use it...
And no, hydrogen combustion will NEVER be a thing due to the simple fact that hydrogen fuel cell engines are TWICE the efficiency, aka you can travel double the distance with fuel cells in comparison to just burning it directly, not even talking about complexity of entire HICE engine and its maintenance costs.
BEV's at the moment wins across the board, this is why registered hydrogen car numbers dropped in 2023 in comparison to previous year, and this is why BEV's sold numbers still going up on basically exponential curve. At this point BEV's could ONLY be beat if we no longer have lithium to make batteries and we would not have any alternatives, other than this, there is no real chance for hydrogen, especially for regular private passenger cars.
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@DawidSienczak
I would definitely be extra happy if hydrogen was actually viable option, but sadly it's not. There is simply soo many complications relating to it that transitioning towards it instead of BEV's makes no sense at this point, like, we have under 1000 hydrogen stations in ENTIRE WORLD, while there are over 3 000 000 BEV's dedicated recharging stations, this excluding the fact that any wall socket could be used to recharge your car, it will be slow, but it can be used.
Where hydrogen fuel cell technology could actually shine is in bigger industries, like busses, trains, ships, semi or even planes, but regular passenger cars it sadly makes zero sense.
Have a nice day!
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