81–90 of 207 posts
Sandy Munro thinks Plasma Kinetics has a breakthrough technology that will, at some point in the future, allow hydrogen powered cars to dominate the auto industry. https://img1.wsimg.com/blobby/go/e0f655f1-c51d-4fe6-9383-1ff... Here's where Sandy Munro mentions Plasma Kinetics: https://youtu.be/06AhaQXhuwQ?t=226
Hydrogen will always leak from any container. Clean hydrogen is difficult to make, giving an opportunity to the oil industry to easily make cheap hydrogen from refineries, which is not carbon neutral. I'm not sure there is enough platinum in the world to make all those cars. Mining platinum might cause additional carbon emissions. Hydrogen is very dangerous because it's highly explosive. Gas is safer in that regard.
> Hydrogen will always leak from any container. not anymore > Clean hydrogen is difficult to make, giving an opportunity to the oil industry to easily make cheap hydrogen from refineries, which is not carbon neutral. It's not and everybody is talking about GREEN hydrogen > I'm not sure there is enough platinum in the world to make all those cars. Mining platinum might cause additional carbon emissions. you don't need…
Hydrogen almost certainly won't go anywhere, in my opinion. * The efficiency compared to battery tech is horrendous. * Hydrogen is effectively a storage technology -- we have to generate it and compress it. Which combined with the above means that charging a hydrogen car will always be more expensive than putting the same amount of usable energy into a battery powered car. * Let's not forget that the cheapest way of…
While inefficiency is indeed a problem, I feel like a lot of people overlook the one huge pro hydrogen has over batteries, namely charging time. Of course this might not be important for the daily commute, or 99% of the vehicles' use. But for that remaining 1% it _is_ a huge deal. And most people buy cars to fulfill a 100% of their needs, not 99%. Now I should say, I know basically nothing about battery tech. But unl…
That extra five minutes on road trips is far far far less than the amount of extra time that has cars take day to day, needing to stop at gas stations rather than get plugged in at the garage. The tradeoff is hugely in EVs favor, IMHO.
Earlier quoted context omitted.
> Cheapest way of charging EVs is from fossil fuels. Fossil fuel electricity is more expensive than wind and solar. Even the most expensive solar, residential, is cheaper than buying from a dirty grid for the vast majority of customers. And the intermittent nature of solar and wind is a perfect match for charging a fleet of EVs. In contrast, green hydrogen is nowhere near as cheap as fossil fuel hydrogen from steam m…
Battery technology isn't very "green" either. Lithium and its alternatives require extensive, polluting mining operations while Hydrogen can be generated from water, water vapor, methane etc.
Earlier quoted context omitted.
Battery technology isn't very "green" either. Lithium and its alternatives require extensive, polluting mining operations while Hydrogen can be generated from water, water vapor, methane etc.
And how does that hydrogen get transformed from water? Alkaline or PEM electrolyzers, but at what environmental cost? And all the fuel cell materials? Why selectively evaluate only one side of the equation? That seems rather biased.
Methane steam reformation is now green?
Earlier quoted context omitted.
> Cheapest way of charging EVs is from fossil fuels. Fossil fuel electricity is more expensive than wind and solar. Even the most expensive solar, residential, is cheaper than buying from a dirty grid for the vast majority of customers. And the intermittent nature of solar and wind is a perfect match for charging a fleet of EVs. In contrast, green hydrogen is nowhere near as cheap as fossil fuel hydrogen from steam m…
Battery technology isn't very "green" either. Lithium and its alternatives require extensive, polluting mining operations while Hydrogen can be generated from water, water vapor, methane etc.
Hydrogen almost certainly won't go anywhere, in my opinion. * The efficiency compared to battery tech is horrendous. * Hydrogen is effectively a storage technology -- we have to generate it and compress it. Which combined with the above means that charging a hydrogen car will always be more expensive than putting the same amount of usable energy into a battery powered car. * Let's not forget that the cheapest way of…
Hydrogen almost certainly won't go anywhere, in my opinion. * The efficiency compared to battery tech is horrendous. * Hydrogen is effectively a storage technology -- we have to generate it and compress it. Which combined with the above means that charging a hydrogen car will always be more expensive than putting the same amount of usable energy into a battery powered car. * Let's not forget that the cheapest way of…
While inefficiency is indeed a problem, I feel like a lot of people overlook the one huge pro hydrogen has over batteries, namely charging time. Of course this might not be important for the daily commute, or 99% of the vehicles' use. But for that remaining 1% it _is_ a huge deal. And most people buy cars to fulfill a 100% of their needs, not 99%. Now I should say, I know basically nothing about battery tech. But unl…
Really think about the time you spend stationary when stopping for fuel on a road trip. It's not just pumping fuel, you also go to the bathroom, get some food, and stretch your legs.
Extremely fast charging a Tesla trick, Hyundai Ionic 5 (starting around 45K before incentives) can charge 10-80% in 18 minutes, which is enough to travel around 330 km. That's roughly 3 hours of driving in most counties.
I could see hydrogen making sense for fleets with local operation that need to be operated nearly 24x7, like the support vehicles at an airport, city busses, and taxis in cities with strong night life. It also makes sense for heavy industry. Doesn't make sense for passenger vehicles; the cost of batteries has crashed too far and the power grid is way too ubiquitous.
My understanding from the article is that Hydrogen vehicles will not be competitive with BEVs in terms of cost per mile for the next 10-20 years. The article states: "An FCEV can drive about 28 miles (45 km) on 1 lb (0.45 kg) of hydrogen" and "If the demand for hydrogen increases, the price could drop to around USD 2.50/lb (USD 5.60/kg) by 2030" Therefore 28 miles will cost 2.5 USD. However, according to ev-database.…
Certainly, new power plant construction, even if green, will be financed by additional cost to the consumer.