Hypx

A much better question is asking what happens when it is not sunny? Because the scenario is always constructed in such a way that exaggerates the efficiency of battery cars. Of course, a solar powered car would be even more efficient in that scenarios, but we don't talk much about those.

The problem is that we have to store energy, often for very long periods of time. For the grid, this is called grid energy storage, and usually includes a wide variety of options. One of which is hydrogen itself, since it is the best to store energy for very long periods.

So in practice, there's not much difference in efficiency, since every idea requires some kind of compromise somewhere. BEVs will often need hydrogen to back it up. But the main point is that once you make the switch to some kind of EV, the issue of efficiency is mostly moot, since you already well beyond ICE cars in terms of efficiency. The rest of the argument is a distraction, mostly made by people who want to promote one idea specially.

It's the primary source of this type of rhetoric. And you sound like someone who fell for it hook, line and sinker.

Battery powered cars are well over 100 years old. They only exist in number right now because of huge subsidies and because governments are mandating they happen. They would not be popular at all otherwise. If we subsidized hydrogen cars to the same extent, we'd be talking about the success of hydrogen cars right now.

The problem is that battery cars are not a viable alternative to most types of ICE cars. People have drank so much kool-aid that they forgot this obvious fact. So they engage in this delusion where the BEV industry is somehow already ascendant, when in reality it is barely a viable business. Which is also why Biden is raising tariffs on Chinese EVs (the OP BTW). Only China is subsidizing BEVs to the levels needed to make it work. Something few other countries are willing to do.

It is another way of converting chemical energy into electricity. Basically, another way of building an EV. And since you don't need nearly as big of a battery to power an EV, it is a sensible way of reducing cost, weight, etc. while still achieving zero emissions. There are absolutely situations where those upsides significant outweigh the downsides.

If people were honestly in favor of EVs or zero emissions in general, they would definitely look at fuel cells seriously. But unfortunately, they don't, because they are mostly Tesla fanboys who want Tesla (and only Tesla) to succeed. So they demonize it, alongside everything else including PHEVs and hybrids. Which is why you see posts from "EV fans" that hate most types of EVs.

The idea that fuel cells are bad or impossible is marketing from Tesla. It's the reason why you see posters talk negatively about fuel cells.

Yes. There are too many Tesla fanboys (still) that have a misinformed understanding of the facts. They don't realize that Tesla is just lying to them. Tesla don't want people to think that there are better cars or better technologies out there.

It's called electrolysis, and is now at 95% efficiency: https://newatlas.com/energy/hysata-hydrogen-mass-production/

A highly exaggerated claim. Once you factor in all of the challenges of grid energy storage and battery manufacturing, there's likely to be little to no difference.

A lot of them were "disappointed" when the estimated death toll got reduced. That tells us who those people really are. Very likely, they're Russia bots that are using the events in Gaza as a distraction to their war in Ukraine.

A fuel cell car is an EV.

It's possible. You can either electrolyze water at home, or eventually there will be photocatalytic systems that makes hydrogen directly.

The same is true of all social media platforms. There are always bad actors and jerkasses that have been banned everywhere else. Eventually, the admins of said social media platform must crackdown and ban those people. Eventually, that will happen to the Fediverse.

The alternative is SAF, which in the long run will be made by combining H₂ with CO₂ to form long-chain hydrocarbons. This effectively is the same thing as using kerosene. But it will require vast amounts of green hydrogen too.