this post was submitted on 23 Sep 2023
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I don't understand how hydrogen didn't win the race. Transports and explodes just like gasoline. Make car go fast. Doesn't degrade like lithium. Can be "mined" by throwing electricity at water during times of excess generation by renewables. When you burn it, it turns into water. Has none of the national security concerns of distribution of lithium mining and production in other countries.
As I understand it, the big issue is energy density? A tank of gasoline takes you quite far compared to an equivalent tank of hydrogen.
And don't get me wrong, lithium batteries are super bad at this too, but I do think that has been a limiting factor for H cars.
And then there's the whole tire dust issue which is definitely a conversation worth having.
Wdym super bad? Most new EVs go like 500km on a charge
Yeah, but they require somewhere in the neighborhood of a thousand pounds of batteries to do so. Some of the more egregious ones need multiple thousands, e.g. the electric hummer whose battery alone is heavier than an ICE Honda Civic. Whereas a dozen gallons of gasoline (roughly 72lbs at 6lb/gal) can power that same ICE Civic for a nearly equivalent range, while causing much less wear & tear on the roads, and likely releasing less tire particulates due to the reduced weight. Of course it still releases CO2 and other nasties...
But yeah, the energy density of EVs is still super bad. It's just "good enough" that we're making it work.