I saw years ago some car companies realeasing hydrogen powered Cars. Now its just electrical Cars. What is wrong with Hydrogen Cars?
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Hydrogen-powered vehicles are still being highly researched. Toyota’s going pretty hard on it.
https://www.toyota.ca/toyota/en/vehicles/mirai/overview
That said, there are a few key differences between Hydrogen versus Electric, and neither is definitely greater.
Hydrogen can be refilled much faster compared to Electric, making it more convenient for people who will drive significant distances. Someone like an Uber driver might want a Hydrogen vehicle since their electric car would run out after only a few hours of driving.
Additionally, Hydrogen vehicles can be built with significantly more range without adding a lot of battery weight. This is very beneficial for long-haul trucking, where weight is very important.
However, Hydrogen is not necessarily as efficient, since (for clean hydrogen), you need to take electricity and use it to perform electrolysis to split water into H2 and O2, and then recombine them to get the energy back. This extra transition means you lose some efficiency. There are also places getting Hydrogen by using Methane, turning CH4 + H2O into CO2 + H. This avoids any green benefits since we’re still releasing carbon into the atmosphere. If we try and push Hydrogen vehicles too fast, without regulation, this will be happening for people to make cheap Hydrogen.
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